- Abelia-
| . Abelia. |
- Abeliophyllum
| white forsythia.Abeliophyllum . |
- Abelmoschus esculentus.
| - Okra. Abelmoschus ficulneus
Abelmoschus manihot - Aibika .. |
- Abies-
| fir. Abies .. |
- Abromeitiella-
| [Now Deuterocohnia] . Abromeitiella .. |
- Abronia-
| sand verbena. Abronia .. |
- Abutilon-
| Trailing Abutilon. Abutilon. |
- Acacia-
| wattle. Acacia . |
- Acaena-
| . Acaena. |
- Acalypha-
| . Acalypha. |
- Acantholimon-
| . Acantholimon. |
- Acanthophoenix-
| . Acanthophoenix. |
- Acanthus-
| . Acanthus. |
- Acca-
| . Acca. |
- Acer-
| maple. Acer . |
- Achillea-
| yarrow. Achillea . |
- Achimenantha-
| hybrid genus. Achimenantha . |
- Achimenes-
| . Achimenes. |
-
Acinos Arvensis.
| Alpine Calamint. Acinos Alpinus. |
- Aciphylla-
| . Aciphylla. |
- Acmena-
| . Acmena. |
- Acoelorraphe-
| saw palm. Acoelorraphe . |
- Acokanthera-
| . Acokanthera. |
- Aconitum-
| aconite, monkshood. Aconitum . |
- Acorus-
| . Acorus. |
- Acrocomia-
| . Acrocomia. |
- Actaea-
| baneberry. Actaea . |
- Actinidia-
| kiwifruit. Actinidia . |
- Ada-
| . Ada. |
- Adansonia-
| . Adansonia. |
- Adenia-
| . Adenia. |
- Adenium-
| . Adenium. |
- Adenocarpus-
| . Adenocarpus. |
- Adenophora-
| . Adenophora. |
- Adenostoma-
| . Adenostoma. |
- Adiantum-
| maidenhair fern. Adiantum . |
- Adlumia-
| . Adlumia. |
- Adonis-
| . Adonis. |
- Adromischus-
| . Adromischus. |
- Aechmea-
| . Aechmea. |
- Aegopodium-
| . Aegopodium. |
- Aeonium-
| . Aeonium. |
- Aerangis-
| an orchid genus. Aerangis . |
- Aerides-
| an orchid genus. Aerides . |
- Aeschynanthus-
| . Aeschynanthus. |
- Aethionema-
| . Aethionema. |
- Agapanthus-
| . Agapanthus. |
- Agapetes-
| . Agapetes. |
- Agastache-
| . Agastache. |
- Agathis-
| . Agathis. |
- Agave-
| . Agave. |
- Ageratum-
| . Ageratum. |
- Aglaonema-
| . Aglaonema. |
- Agonis-
| . Agonis. |
- Agrostemma-
| corn cockle. Agrostemma . |
- Agrostis-
| . Agrostis. |
- Aichryson-
| . Aichryson. |
- Ailanthus-
| Tree of Heaven, etc. Ailanthus . |
- Aiphanes-
| . Aiphanes. |
- Aira-
| hair grass. Aira . |
- Ajania-
| . Ajania. |
- Ajuga-
| bugleweed. Ajuga . |
- Akebia-
| . Akebia. |
- Alangium-
| . Alangium. |
- Albizia-
| silk tree. Albizia . |
- Albuca-
| . Albuca. |
- Alcea-
| hollyhock. Alcea . |
- Alchemilla-
| . Alchemilla. |
- Aleurites-
| . Aleurites. |
- Aliceara-
| hybrid genus. Aliceara . |
- Alisma-
| water plantain. Alisma . |
- Alkanna-
| . Alkanna. |
- Allamanda-
| . Allamanda. |
- Allium-
| onion. Allium . |
- Alluaudia-
| . Alluaudia. |
- Alnus-
| alder. Alnus . |
- Alocasia-
| . Alocasia. |
- Aloe-
| . Aloe. |
- Aloinopsis-
| . Aloinopsis. |
- Alopecurus-
| foxtail grass. Alopecurus . |
- Aloysia-
| . Aloysia. |
- Alpinia-
| ginger lily. Alpinia . |
- Alsobia-
| . Alsobia. |
- Alstroemeria-
| . Alstroemeria. |
- Alternanthera-
| . Alternanthera. |
- Althaea-
| . Althaea. |
- Alyogyne-
| . Alyogyne. |
- Alyssum-
| . Alyssum. |
- Amaranthus-
| . Amaranthus. |
- Amarcrinum-
| hybrid genus. Amarcrinum . |
- Amarygia-
| hybrid genus. Amarygia . |
- Amaryllis-
| . Amaryllis. |
- Amberboa-
| . Amberboa. |
- Amelanchier-
| . Amelanchier. |
- Amesiella-
| . Amesiella. |
- Amherstia-
| . Amherstia. |
- Amicia-
| . Amicia. |
- Ammi-
| . Ammi. |
- Ammobium-
| . Ammobium. |
- Amorpha-
| . Amorpha. |
- Amorphophallus-
| . Amorphophallus. |
- Ampelopsis-
| . Ampelopsis. |
- Amsonia-
| . Amsonia. |
- Anacampseros-
| . Anacampseros. |
- Anacyclus-
| . Anacyclus. |
- Anagallis-
| pimpernel. Anagallis . |
- Ananas-
| pineapple. Ananas . |
- Anaphalis-
| . Anaphalis. |
- Anchusa-
| . Anchusa. |
- Andromeda-
| . Andromeda. |
- Andropogon-
| . Andropogon. |
- Androsace-
| . Androsace. |
- Anemone-
| windflower. Anemone . |
- Anemonella-
| . Anemonella. |
- Anemonopsis-
| . Anemonopsis. |
- Anemopaegma-
| . Anemopaegma. |
- Anethum-
| dill. Anethum . |
- Angelica-
| . Angelica. |
- Angelonia-
| . Angelonia. |
- Angophora-
| . Angophora. |
- Angraecum-
| an orchid genus. Angraecum . |
- Anguloa-
| an orchid genus. Anguloa . |
- Angulocaste-
| hybrid genus. Angulocaste . |
- Anigozanthos-
| . Anigozanthos. |
- Anicacanthus-
| . Anicacanthus. |
- Anisodontea-
| . Anisodontea. |
- Anoda-
| . Anoda. |
- Anomatheca-
| . Anomatheca. |
- Anopterus-
| . Anopterus. |
- Anredera-
| . Anredera. |
- Antennaria-
| . Antennaria. |
- Anthemis-
| . Anthemis. |
- Anthericum-
| . Anthericum. |
- Anthriscus-
| . Anthriscus. |
- Anthurium-
| . Anthurium. |
- Anthyllis-
| . Anthyllis. |
- Antigonon-
| . Antigonon. |
- Antirrhinum-
| snapdragon. Antirrhinum . |
- Aphelandra-
| . Aphelandra. |
- Aphyllanthes-
| . Aphyllanthes. |
- Aponogeton-
| . Aponogeton. |
- Aporocactus-
| . Aporocactus. |
- Aporoheliocereus-
| hybrid genus. Aporoheliocereus . |
- Aptenia-
| . Aptenia. |
- Aquilegia-
| columbine. Aquilegia . |
- Arabis-
| rock cress. Arabis . |
- Arachnis-
| scorpion orchid. Arachnis . |
- Araeococcus-
| . Araeococcus. |
- Aralia-
| . Aralia. |
- Erigeron Canadense.
 | Horse Weed. Erigeron Canadense. . |
- Araucaria-
| monkey-puzzle. Araucaria . |
- Araujia-
| . Araujia. |
- Arbutus-
| madrone. Arbutus . |
- Archontophoenix-
| king palm. Archontophoenix . |
- Arctostaphylos-
| bearberry, manzanita. Arctostaphylos . |
- Arctotheca-
| . Arctotheca. |
- Arctotis-
| African daisy. Arctotis . |
- Ardisia-
| . Ardisia. |
- Areca-
| . Areca. |
- Arenaria-
| sandwort. Arenaria . |
- Arenga-
| . Arenga. |
- Argemone-
| prickly poppy. Argemone . |
- Argyranthemum-
| . Argyranthemum. |
- Argyreia-
| . Argyreia. |
- Argyroderma-
| . Argyroderma. |
- Ariocarpus-
| . Ariocarpus. |
- Arisaema-
| . Arisaema. |
- Arisarum-
| . Arisarum. |
- Aristea-
| . Aristea. |
- Aristolochia-
| . Aristolochia. |
- Armoracia-
| . Armoracia. |
- Arnebia-
| . Arnebia. |
- Arnica-
| . Arnica. |
- Aronia-
| chokeberry. Aronia . |
- Arrabidaea-
| . Arrabidaea. |
- Arrhenatherum-
| Oat Grass. Arrhenatherum . |
- Artemisia-
| mugwort, sagebrush, wormwood. Artemisia . |
- Arthropodium-
| . Arthropodium. |
- Arum-
| . Arum. |
- Aruncus-
| . Aruncus. |
- Arundinaria-
| . Arundinaria. |
- Arundo-
| . Arundo. |
- Asarina-
| . Asarina. |
- Asarum-
| wild ginger. Asarum . |
- Asclepias-
| milkweed, silkweed. Asclepias . |
- Ascocenda-
| hybrid orchid genus . Ascocenda . |
- Asimina-
| . Asimina. |
- Asparagus-
| . Asparagus. |
- Asperula-
| woodruff. Asperula . |
- Asphodeline-
| . Asphodeline. |
- Asphodelus-
| asphodel. Asphodelus . |
- Aspidistra-
| Aspidistra The Cast Iron Plant. Aspidistra. |
- Asplenium-
| . Asplenium. |
- Astelia-
| . Astelia. |
- Aster-
| . Aster. |
- Asteranthera-
| . Asteranthera. |
- Astilbe-
| . Astilbe. |
- Astilboides-
| . Astilboides. |
- Astragalus-
| milk vetch. Astragalus . |
- Astrantia-
| . Astrantia. |
- Astrophytum-
| . Astrophytum. |
- Atherosperma-
| . Atherosperma. |
- Athrotaxis-
| . Athrotaxis. |
- Athyrium-
| . Athyrium. |
- Atriplex-
| . Atriplex. |
- Aubrieta-
| . Aubrieta. |
- Aucuba-
| . Aucuba. |
- Aurinia-
| . Aurinia. |
- Austrocedrus-
| . Austrocedrus. |
- Azalea-
| . Azalea. |
- Azara-
| . Azara. |
- Azolla-
| Aquatic ferns. Azolla . |
- Azorella-
| . Azorella. |
- Azorina-
| . Azorina. |
- Aztekium-
| . Aztekium. |
-
| |
- Top
|
|
- Babiana-
| . Babiana.. |
- Baccharis-
| . Baccharis. |
- Backhousia-
| . Backhousia. |
- Bacopa-
| water hyssop. Bacopa . |
- Baeckea-
| . Baeckea. |
- Ballota-
| . Ballota. |
- Balsamorhiza-
| balsam root. Balsamorhiza . |
- Bambusa-
| bamboo. Bambusa . |
- Banksia-
| . Banksia. |
- Baptisia-
| . Baptisia. |
- Barbarea-
| Yellow rocket or winter cress. Barbarea . |
- Barkeria-
| an orchid genus. Barkeria . |
- Barleria-
| . Barleria. |
- Bassia-
| . Bassia. |
- Bauera-
| . Bauera. |
- Bauhinia-
| . Bauhinia. |
- Beaucarnea-
| . Beaucarnea. |
- Beaufortia-
| . Beaufortia. |
- Beaumontia-
| . Beaumontia. |
- Begonia-
| . Begonia. |
- Belancanda-
| . Belancanda. |
- Bellevalia-
| . Bellevalia. |
- Bellis-
| daisy. Bellis . |
- Bellium-
| . Bellium. |
- Berberidopsis-
| . Berberidopsis. |
- Berberis-
| barberry. Berberis . |
- Berchemia-
| . Berchemia. |
- Bergenia-
| . Bergenia. |
- Bergerocactus-
| . Bergerocactus. |
- Berkheya-
| . Berkheya. |
- Berlandiera-
| . Berlandiera. |
- Bertolonia-
| . Bertolonia. |
- Beschorneria-
| . Beschorneria. |
- Bessera-
| . Bessera. |
- Beta-
| beet. Beta . |
- Betula-
| birch. Betula . |
- Biarum-
| . Biarum. |
- Bidens-
| . Bidens. |
- Bignonia-
| . Bignonia. |
- Billardiera-
| . Billardiera. |
- Billbergia-
| . Billbergia. |
- Bixa-
| . Bixa. |
- Blandfordia-
| . Blandfordia. |
- Blechnum-
| hard fern. Blechnum . |
- Bletilla-
| an orchid genus. Bletilla . |
- Bloomeria-
| . Bloomeria. |
- Blossfeldia-
| . Blossfeldia. |
- Boenninghausenia-
| . Boenninghausenia. |
- Bolax-
| . Bolax. |
- Bolbitis-
| . Bolbitis. |
- Bollea-
| . Bollea. |
- Boltonia-
| . Boltonia. |
- Bolusanthus-
| . Bolusanthus. |
- Bomarea-
| . Bomarea. |
- Bombax-
| . Bombax. |
- Bongardia-
| . Bongardia. |
- Borago-
| . Borago. |
- Borassus-
| . Borassus. |
- Boronia-
| . Boronia. |
- Bothriochloa-
| . Bothriochloa. |
- Bougainvillea-
| . Bougainvillea. |
- Bouteloua-
| . Bouteloua. |
- Bouvardia-
| . Bouvardia. |
- Bowenia-
| . Bowenia. |
- Bowiea-
| . Bowiea. |
- Brachychiton-
| . Brachychiton. |
- Brachyglottis-
| . Brachyglottis. |
- Brachyscome-
| . Brachyscome. |
- Brachysema-
| . Brachysema. |
- Brachystelma-
| . Brachystelma. |
- Bracteantha-
| . Bracteantha. |
- Brahea-
| Hesper palm. Brahea . |
- Brassavola-
| an orchid genus. Brassavola . |
- Brassia-
| an orchid genus. Brassia . |
- Brassica-
| mustard, cabbage. Brassica . |
- Brassocattleya-
| hybrid orchids. Brassocattleya . |
- Brassolaeliocattleya-
| trigeneric hybrid orchids. Brassolaeliocattleya . |
- Breynia-
| . Breynia. |
- Briggsia-
| . Briggsia. |
- Brimeura-
| . Brimeura. |
- Briza-
| quaking grass. Briza . |
- Brodiaea-
| . Brodiaea. |
- Bromelia-
| . Bromelia. |
- Broughtonia-
| . Broughtonia. |
- Broussonetia-
| . Broussonetia. |
- Browallia-
| . Browallia. |
- Brownea-
| . Brownea. |
- Browningia-
| . Browningia. |
- Bruckenthalia-
| . Bruckenthalia. |
- Brugmansia-
| . Brugmansia. |
- Brunfelsia-
| . Brunfelsia. |
- Brunnera-
| . Brunnera. |
- Brunsvigia-
| . Brunsvigia. |
- Buddleja-
| . Buddleja. |
- Buglossoides-
| . Buglossoides. |
- Bulbine-
| . Bulbine. |
- Bulbinella-
| . Bulbinella. |
- Bulbocodium-
| . Bulbocodium. |
- Bulbophyllum-
| an orchid genus. Bulbophyllum . |
- Buphthalmum-
| . Buphthalmum. |
- Bupleurum-
| . Bupleurum. |
- Burchardia-
| . Burchardia. |
- Burchellia-
| . Burchellia. |
- Bursera-
| . Bursera. |
- Butea-
| . Butea. |
- Butia-
| . Butia. |
- Butomus-
| . Butomus. |
- Buxus-
| boxwood. Buxus . |
-
| . |
- Top
|
|
- Cabomba-
| . Cabomba. |
- Caesalpinia-
| . Caesalpinia. |
- Caladium-
| . Caladium. |
- Calamagrostis-
| reed grass, smallweed. Calamagrostis . |
- Calamintha-
| calamint. Calamintha . |
- Calamus-
| . Calamus. |
- Calandrinia-
| . Calandrinia. |
- Calanthe-
| . Calanthe. |
- Calathea-
| . Calathea. |
- Calceolaria-
| slipperwort. Calceolaria . |
- Calendula-
| marigold. Calendula . |
- Calibanus-
| . Calibanus. |
- Calla-
| . Calla. |
- Calliandra-
| . Calliandra. |
- Callianthemum-
| . Callianthemum. |
- Callicarpa-
| beautyberry. Callicarpa . |
- Callirhoe-
| poppy mallow. Callirhoe . |
- Callisia-
| . Callisia. |
- Callistemon-
| bottlebrush. Callistemon . |
- Callistephus-
| Chinese aster. Callistephus . |
- Callitriche-
| water starwort. Callitriche . |
- Calltris-
| . Calltris. |
- Calluna-
| heather. Calluna . |
- Calocedrus-
| incense-cedar. Calocedrus . |
- Calochone-
| . Calochone. |
- Calochortus-
| . Calochortus. |
- Calomeria-
| . Calomeria. |
- Caloscordum-
| . Caloscordum. |
- Calothamnus-
| . Calothamnus. |
- Calpurnia-
| . Calpurnia. |
- Caltha-
| kingcup, marsh marigold. Caltha . |
- Calycanthus-
| . Calycanthus. |
- Calymmanthium-
| . Calymmanthium. |
- Calypso-
| an orchid genus. Calypso . |
- Calytrix-
| starflower. Calytrix . |
- Camassia-
| quamash. Camassia . |
- Camellia-
| . Camellia. |
- Campanula-
| bellflower. Campanula . |
- Campsis-
| trumpet vine. Campsis . |
- Campylotropsis-
| . Campylotropsis. |
- Canarina-
| . Canarina. |
- Canistrum-
| . Canistrum. |
- Canna-
| . Canna. |
- Cantua-
| . Cantua. |
- Capsicum-
| pepper. Capsicum . |
- Caragana-
| peashrub. Caragana . |
- Caralluma-
| . Caralluma. |
- Cardamine-
| bittercress. Cardamine . |
- Cardiocrinum-
| . Cardiocrinum. |
- Cardiospermum-
| . Cardiospermum. |
- Carex-
| sedge. Carex . |
- Carissa-
| . Carissa. |
- Carlina-
| . Carlina. |
- Carludovica-
| . Carludovica. |
- Carmichaelia-
| . Carmichaelia. |
- Carnegiea-
| saguaro. Carnegiea . |
- Carpentaria-
| . Carpentaria. |
- Carpenteria-
| . Carpenteria. |
- Carpinus-
| hornbeam. Carpinus . |
- Carpobrotus-
| . Carpobrotus. |
- Carthamus-
| safflower. Carthamus . |
- Carum-
| caraway. Carum . |
- Carya-
| hickory, pecan. Carya . |
- Caryopteris-
| . Caryopteris. |
- Caryota-
| fishtail palm. Caryota . |
- Cassia-
| . Cassia. |
- Cassinia-
| . Cassinia. |
- Cassiope-
| . Cassiope. |
- Castanea-
| chestnut. Castanea . |
- Castanopsis-
| . Castanopsis. |
- Castanospermum-
| . Castanospermum. |
- Casuarina-
| . Casuarina. |
- Catalpa-
| . Catalpa. |
- Catananche-
| . Catananche. |
- Catasetum-
| an orchid genus. Catasetum . |
- Catharanthus-
| Madagascar Periwinkle. Catharanthus . |
- Catopsis-
| . Catopsis. |
- Cattleya-
| an orchid genus. Cattleya . |
- Caulophyllum-
| . Caulophyllum. |
- Cautleya-
| . Cautleya. |
- Cavendishia-
| . Cavendishia. |
- Ceanothus-
| California-lilac. Ceanothus . |
- Cedronella-
| . Cedronella. |
- Cedrus-
| cedar. Cedrus . |
- Ceiba-
| Kapok. Ceiba . |
- Celastrus-
| staff-vine. Celastrus . |
- Celmisia-
| New Zealand daisy. Celmisia . |
- Celosia-
| cockscomb. Celosia . |
- Celtis-
| hackberry. Celtis . |
- Centaurea-
| . Centaurea. |
- Centaurium-
| . Centaurium. |
- Centradenia-
| . Centradenia. |
- Centranthus-
| valerian. Centranthus . |
- Cephalaria-
| . Cephalaria. |
- Cephalocereus-
| . Cephalocereus. |
- Cephalophyllum-
| . Cephalophyllum. |
- Cephalotaxus-
| plum-yew. Cephalotaxus . |
- Ceraria-
| . Ceraria. |
- Cerastium-
| . Cerastium. |
- Ceratopetalum-
| . Ceratopetalum. |
- Ceratophyllum-
| . Ceratophyllum. |
- Ceratopteris-
| . Ceratopteris. |
- Ceratostigma-
| . Ceratostigma. |
- Ceratozamia-
| . Ceratozamia. |
- Cercidiphyllum-
| . Cercidiphyllum. |
- Cercis-
| . Cercis. |
- Cercocarpus-
| . Cercocarpus. |
- Cereus-
| . Cereus. |
- Ceropegia-
| . Ceropegia. |
- Cestrum-
| . Cestrum. |
- Chaenomeles-
| flowering quince. Chaenomeles . |
- Chaenorhinum-
| dwarf snapdragon. Chaenorhinum . |
- Chaerophyllum-
| . Chaerophyllum. |
- Chamaecyparis-
| cypress. Chamaecyparis . |
- Chamaecytisus-
| . Chamaecytisus. |
- Chamaedaphne-
| . Chamaedaphne. |
- Chamaedorea-
| . Chamaedorea. |
- Chamaelirium-
| . Chamaelirium. |
- Chamaemelum-
| chamomile. Chamaemelum . |
- Chamaerops-
| . Chamaerops. |
- Chamelaucium-
| . Chamelaucium. |
- Chasmanthe-
| . Chasmanthe. |
- Chasmanthium-
| . Chasmanthium. |
- Cheilanthes-
| . Cheilanthes. |
- Cheiridopsis-
| . Cheiridopsis. |
- Chelidonium-
| . Chelidonium. |
- Chelone-
| turtlehead. Chelone . |
- Chiastophyllum-
| . Chiastophyllum. |
- Chiliotrichum-
| . Chiliotrichum. |
- Chilopsis-
| desert willow. Chilopsis . |
- Chimaphila-
| . Chimaphila. |
- Chimonanthus-
| wintersweet. Chimonanthus . |
- Chimonobambusa-
| . Chimonobambusa. |
- Chionanthus-
| fringe tree. Chionanthus . |
- Chionochloa-
| . Chionochloa. |
- Chionodoxa-
| glory of the snow. Chionodoxa . |
- Chionoscilla-
| hybrid genus. Chionoscilla . |
- Chirita-
| . Chirita. |
- Chlidanthus-
| . Chlidanthus. |
- Choisya-
| . Choisya. |
- Chorisia-
| . Chorisia. |
- Chorizema-
| . Chorizema. |
- Chrysalidocarpus-
| . Chrysalidocarpus. |
- Chrysanthemum-
| . Chrysanthemum. |
- Chrysogonum-
| . Chrysogonum. |
- Chrysolepis-
| . Chrysolepis. |
- Chrysosplenium-
| . Chrysosplenium. |
- Chrysothemis-
| . Chrysothemis. |
- Chusquea-
| . Chusquea. |
- Cibotium-
| . Cibotium. |
- Cicerbita-
| . Cicerbita. |
- Cichorium-
| chicory, endive. Cichorium . |
- Cimicifuga-
| bugbane. Cimicifuga . |
- Cinnamomum-
| . Cinnamomum. |
- Cionura-
| . Cionura. |
- Cirsium-
| . Cirsium. |
- Cissus-
| . Cissus. |
- Cistus-
| rockrose, sun rose. Cistus . |
- Citrofortunella-
| hybrid genus. Citrofortunella . |
- Citrus-
| lime, lemon. Citrus . |
- Cladanthus-
| . Cladanthus. |
- Cladrastis-
| . Cladrastis. |
- Clarkia-
| . Clarkia. |
- Claytonia-
| . Claytonia. |
- Cleistocactus-
| . Cleistocactus. |
- Clematis-
| . Clematis. |
- Cleome-
| spider flower. Cleome . |
- Clerodendrum-
| . Clerodendrum. |
- Clethra-
| summersweet. Clethra . |
- Cleyera-
| . Cleyera. |
- Clianthus-
| . Clianthus. |
- Clintonia-
| . Clintonia. |
- Clitoria-
| . Clitoria. |
- Clivia-
| . Clivia. |
- Clusia-
| . Clusia. |
- Clytostoma-
| . Clytostoma. |
- Cobaea-
| . Cobaea. |
- Coccoloba-
| sea grape. Coccoloba . |
- Coccothrinax-
| thatch palm. Coccothrinax . |
- Cocculus-
| . Cocculus. |
- Cochlioda-
| . Cochlioda. |
- Cocos-
| coconut. Cocos . |
- Codiaeum-
| croton. Codiaeum . |
- Codonanthe-
| . Codonanthe. |
- Codonopsis-
| . Codonopsis. |
- Coelia-
| . Coelia. |
- Coelogyne-
| an orchid genus. Coelogyne . |
- Coix-
| . Coix. |
- Colchicum-
| autumn crocus, meadow saffron. Colchicum . |
- Coleonema-
| . Coleonema. |
- Colletia-
| . Colletia. |
- Collinsia-
| . Collinsia. |
- Collomia-
| . Collomia. |
- Colocasia-
| taro. Colocasia . |
- Colquhounia-
| . Colquhounia. |
- Columnea-
| . Columnea. |
- Colutea-
| bladder senna. Colutea . |
- Coluteocarpus-
| . Coluteocarpus. |
- Colvillea-
| . Colvillea. |
- Combretum-
| . Combretum. |
- Commelina-
| day flower, spiderwort. Commelina . |
- Comptonia-
| . Comptonia. |
- Conandron-
| . Conandron. |
- Congea-
| . Congea. |
- Conicosia-
| . Conicosia. |
- Coniogramme-
| . Coniogramme. |
- Conophytum-
| . Conophytum. |
- Consolida-
| larkspur. Consolida . |
- Convallaria-
| lily-of-the-valley. Convallaria . |
- Convolvulus-
| bindweed, morning glory. Convolvulus . |
- Copernicia-
| wax palm. Copernicia . |
- Copiapoa-
| . Copiapoa. |
- Coprosma-
| . Coprosma. |
- Coptis-
| goldthread. Coptis . |
- Cordia-
| . Cordia. |
- Cordyline-
| . Cordyline. |
- Coreopsis-
| tickseed. Coreopsis . |
- Coriandrum-
| coriander cilantro. Coriandrum . |
- Coriaria-
| . Coriaria. |
- Cornus-
| dogwood. Cornus . |
- Corokia-
| . Corokia. |
- Coronilla-
| . Coronilla. |
- Correa-
| . Correa. |
- Corryocactus-
| . Corryocactus. |
- Cortaderia-
| pampas grass, tussock grass. Cortaderia . |
- Cortusa-
| . Cortusa. |
- Corydalis-
| . Corydalis. |
- Corylopsis-
| winter-hazel. Corylopsis . |
- Corylus-
| hazel, filbert. Corylus . |
- Corynocarpus-
| . Corynocarpus. |
- Corypha-
| . Corypha. |
- Coryphantha-
| . Coryphantha. |
- Cosmos-
| . Cosmos. |
- Costus-
| . Costus. |
- Cotinus-
| smoke tree. Cotinus . |
- Cotoneaster-
| . Cotoneaster. |
- Cotula-
| . Cotula. |
- Cotyledon-
| . Cotyledon. |
- Crambe-
| . Crambe. |
- Craspedia-
| . Craspedia. |
- Crassula-
| . Crassula. |
- Crataegus-
| hawthorn. Crataegus . |
- Crepis-
| . Crepis. |
- Crinodendron-
| . Crinodendron. |
- Crinum-
| . Crinum. |
- Crocosmia-
| . Crocosmia. |
- Crocus-
| . Crocus. |
- Crossandra-
| . Crossandra. |
- Crotalaria-
| rattlebox. Crotalaria . |
- Crowea-
| . Crowea. |
- Cryptanthus-
| . Cryptanthus. |
- Cryptbergia-
| hybrid genus. Cryptbergia . |
- Cryptocoryne-
| water trumpet. Cryptocoryne . |
- Cryptomeria-
| Sugi. Cryptomeria . |
- Ctenanthe-
| . Ctenanthe. |
- Cunila-
| . Cunila. |
- Cunninghamia-
| China-fir. Cunninghamia . |
- Cunonia-
| . Cunonia. |
- Cuphea-
| . Cuphea. |
- Cupressus-
| cypress. Cupressus . |
- Curcuma-
| . Curcuma. |
- Cyananthus-
| . Cyananthus. |
- Cyanotis-
| . Cyanotis. |
- Cyathea-
| tree fern. Cyathea . |
- Cyathodes-
| . Cyathodes. |
- Cybistax-
| . Cybistax. |
- Cycas-
| cycad, sago "palm". Cycas . |
- Cyclamen-
| . Cyclamen . |
- Cycnoches
| . Cycnoches. |
- Pink Cyclamen
| . Pink Cyclamen | .
- Cydonia-
| quince. Cydonia . |
- Cymbalaria-
| Ivy-leaved toadflax. Cymbalaria . |
- Cymbidium-
| an orchid genus. Cymbidium . |
- Cymbopogon-
| . Cymbopogon. |
- Cynara-
| . Cynara. |
- Cynoglossum-
| . Cynoglossum. |
- Cypella-
| . Cypella. |
- Cyperus-
| . Cyperus. |
- Cyphomandra-
| tree tomato. Cyphomandra . |
- Cyphostemma-
| . Cyphostemma. |
- Cypripedium-
| an orchid genus. Cypripedium . |
- Cyrilla-
| . Cyrilla. |
- Cyrtanthus-
| . Cyrtanthus. |
- Cyrtomium-
| . Cyrtomium. |
- Cyrtostachys-
| . Cyrtostachys. |
- Cystopteris-
| bladder fern. Cystopteris . |
- Cytisus-
| broom. Cytisus . |
-
| . |
- Top
|
|
- Daboecia-
| . Daboecia. |
- Dacrydium-
| . Dacrydium. |
- Dactylis-
| . Dactylis. |
- Dactylorhiza-
| marsh orchid. Dactylorhiza . |
- Dahlia-
| . Dahlia. |
- Dais-
| . Dais. |
- Dalea-
| indigo bush. Dalea . |
- Damasonium-
| . Damasonium. |
- Dampiera-
| . Dampiera. |
- Danae-
| . Danae. |
- Daphne-
| . Daphne. |
- Daphniphyllum-
| . Daphniphyllum. |
- Darmera-
| . Darmera. |
- Darwinia-
| scent myrtle. Darwinia . |
- Dasylirion-
| . Dasylirion. |
- Davallia-
| . Davallia. |
- Davidia-
| . Davidia. |
- Decaisnea-
| . Decaisnea. |
- Decarya-
| . Decarya. |
- Decumaria-
| . Decumaria. |
- Deinanthe-
| . Deinanthe. |
- Delonix-
| . Delonix. |
- Delosperma-
| . Delosperma. |
- Delphinium-
| . Delphinium. |
- Dendranthema-
| . Dendranthema. |
- Dendrobium-
| an orchid genus. Dendrobium . |
- Dendrocalamus-
| . Dendrocalamus. |
- Dendrochilum-
| . Dendrochilum. |
- Dendromecon-
| tree poppy. Dendromecon . |
- Denmoza-
| . Denmoza. |
- Dennstaedtia-
| . Dennstaedtia. |
- Deschampsia-
| hair grass. Deschampsia . |
- Desfontainia-
| . Desfontainia. |
- Desmodium-
| . Desmodium. |
- Deutzia-
| . Deutzia. |
- Dianella-
| flax lily. Dianella . |
- Dianthus-
| carnation, pink. Dianthus . |
- Diascia-
| . Diascia. |
- Dicentra-
| bleeding heart. Dicentra . |
- Dichelostemma-
| . Dichelostemma. |
- Dichondra-
| . Dichondra. |
- Dichorisandra-
| . Dichorisandra. |
- Dicksonia-
| . Dicksonia. |
- Dicliptera-
| . Dicliptera. |
- Dictamnus-
| . Dictamnus. |
- Dictyosperma-
| princess palm. Dictyosperma . |
- Didymochlaena-
| . Didymochlaena. |
- Dieffenbachia-
| . Dieffenbachia. |
- Dierama-
| . Dierama. |
- Diervilla-
| bush honeysuckle. Diervilla . |
- Dietes-
| . Dietes. |
- Digitalis-
| foxglove. Digitalis . |
- Dillenia-
| . Dillenia. |
- Dillwynia-
| . Dillwynia. |
- Dimorphotheca-
| African daisy. Dimorphotheca . |
- Dionaea-
| Venus flytrap. Dionaea . |
- Dionysia-
| . Dionysia. |
- Dioon-
| . Dioon. |
- Dioscorea-
| yam. Dioscorea . |
- Diospyros-
| . Diospyros. |
- Dipcadi-
| . Dipcadi. |
- Dipelta-
| . Dipelta. |
- Diphylleia-
| . Diphylleia. |
- Diplarrhena-
| . Diplarrhena. |
- Diplazium-
| . Diplazium. |
- Diplocyclos-
| . Diplocyclos. |
- Dipsacus-
| teasel. Dipsacus . |
- Dipteronia-
| . Dipteronia. |
- Dirca-
| . Dirca. |
- Disa-
| an orchid genus. Disa . |
- Disanthus-
| . Disanthus. |
- Discaria-
| . Discaria. |
- -
| . |
- Dischidia pectinoides-
| Ant plant. Dischidia pectinoides . |
- Discocactus-
| . Discocactus. |
- Disocactus-
| . Disocactus. |
- Disporopsis-
| . Disporopsis. |
- Disporum-
| fairy bells. Disporum . |
- Distictis-
| . Distictis. |
- Distylium-
| . Distylium. |
- Docynia-
| . Docynia. |
- Dodecatheon-
| shooting stars. Dodecatheon . |
- Dodonaea-
| . Dodonaea. |
- Dombeya-
| . Dombeya. |
- Doodia-
| . Doodia. |
- Doronicum-
| . Doronicum. |
- Dorotheanthus-
| ice plant. Dorotheanthus . |
- Dorstenia-
| . Dorstenia. |
- Doryanthes-
| spear lily. Doryanthes . |
- Doryopteris-
| . Doryopteris. |
- Draba-
| . Draba. |
- Dracaena-
| . Dracaena. |
- Dracocephalum-
| . Dracocephalum. |
- Dracula-
| an orchid genus. Dracula . |
- Dracununculus-
| . Dracununculus. |
- Dregea-
| . Dregea. |
- Drimys-
| . Drimys. |
- Drosanthemum-
| . Drosanthemum. |
- Drosera-
| sundew. Drosera . |
- Dryandra-
| . Dryandra. |
- Dryas-
| . Dryas. |
- Drynaria-
| . Drynaria. |
- Dryopteris-
| buckler fern. Dryopteris . |
- Duchesnea-
| . Duchesnea. |
- Dudleya-
| . Dudleya. |
- Duranta-
| . Duranta. |
- Duvalia-
| . Duvalia. |
- Dyckia-
| . Dyckia. |
-
| . |
- Top
|
|
- Ebracteola-
| . Ebracteola. |
- Ecballium-
| . Ecballium. |
- Eccremocarpus-
| . Eccremocarpus. |
- Echeveria-
| . Echeveria. |
- Echidnopsis-
| . Echidnopsis. |
- Echinacea-
| coneflower. Echinacea . |
- Echinocactus-
| . Echinocactus. |
- Echinocereus-
| . Echinocereus. |
- Echinops-
| globe thistle. Echinops . |
- Echinopsis-
| . Echinopsis. |
- Echium-
| Viper's Bugloss. Echium. |
- Edgeworthia-
| . Edgeworthia. |
- Edithcolea-
| . Edithcolea. |
- Edraianthus-
| . Edraianthus. |
- Egeria-
| . Egeria. |
- Ehretia-
| . Ehretia. |
- Eichhornia-
| water hyacinth. Eichhornia . |
- Elaeagnus-
| . Elaeagnus. |
- Elaeis-
| oil palm. Elaeis . |
- Elaeocarpus-
| . Elaeocarpus. |
- Elatostema-
| . Elatostema. |
- Eleocharis-
| spike rush. Eleocharis . |
- Elettaria-
| . Elettaria. |
- Eleutherococcus-
| . Eleutherococcus. |
- Elodea-
| pondweed. Elodea . |
- Elsholtzia-
| . Elsholtzia. |
- Elymus-
| wild rye. Elymus . |
- Embothrium-
| . Embothrium. |
- Emilia-
| tassel flower. Emilia . |
- Emmenopterys-
| . Emmenopterys. |
- Encelia-
| . Encelia. |
- Encephalartos-
| Kaffir bread. Encephalartos . |
- Encyclia-
| an orchid genus. Encyclia . |
- Enkianthus-
| . Enkianthus. |
- Ensete-
| . Ensete. |
- Eomecon-
| snow poppy. Eomecon . |
- Epacris-
| . Epacris. |
- Ephedra-
| ephedra. Ephedra . |
- Epidendrum-
| an orchid genus. Epidendrum . |
- Epigaea-
| . Epigaea. |
- Epilobium-
| . Epilobium. |
- Epimedium-
| barrenwort. Epimedium . |
- Epipactis-
| helleborine, an orchid genus. Epipactis . |
- Epiphyllum-
| orchid cactus. Epiphyllum . |
- Episcia-
| flame violet. Episcia . |
- Epithelantha-
| . Epithelantha. |
- Equisetum
| - horse tail. Equisetum | .
- Eragrostis-
| love grass. Eragrostis . |
- Eranthemum-
| . Eranthemum. |
- Eranthis-
| winter aconite. Eranthis . |
- Ercilla-
| . Ercilla. |
- Eremophila-
| Emu Bush. Eremophila . |
- Eremurus-
| . Eremurus. |
- Erica-
| heath/heather. Erica . |
- Erigeron-
| fleabane. Erigeron . |
- Erinacea-
| . Erinacea. |
- Erinus-
| . Erinus. |
- Eriobotrya-
| . Eriobotrya. |
- Eriogonum-
| . Eriogonum. |
- Eriophorum-
| cotton grass. Eriophorum . |
- Eriophyllum-
| . Eriophyllum. |
- Eriostemon-
| waxflower. Eriostemon . |
- Eritrichium-
| . Eritrichium. |
- Erodium-
| . Erodium. |
- Eryngium-
| eryngo, sea holly. Eryngium . |
- Erysimum-
| wallflower. Erysimum . |
- Erythrina-
| coral tree. Erythrina . |
- Erythronium-
| . Erythronium. |
- Escallonia-
| . Escallonia. |
- Eschscholzia-
| California poppy. Eschscholzia . |
- Escobaria-
| . Escobaria. |
- Espostoa-
| . Espostoa. |
- Etlingera-
| . Etlingera. |
- Eucalyptus-
| Gum tree, ironbark. Eucalyptus . |
- Eucharis-
| . Eucharis. |
- Eucomis-
| . Eucomis. |
- Eucommia-
| . Eucommia. |
- Eucryphia-
| . Eucryphia. |
- Eulophia-
| an orchid genus. Eulophia . |
- Euonymus-
| . Euonymus. |
- Eupatorium-
| . Eupatorium. |
- Euphorbia-
| spurge. Euphorbia . |
- Euptelea-
| . Euptelea. |
- Eurya-
| . Eurya. |
- Euryale-
| . Euryale. |
- Euryops-
| . Euryops. |
- Eustoma-
| . Eustoma. |
- Evolvulus-
| . Evolvulus. |
- Exacum-
| . Exacum. |
- Exochorda-
| . Exochorda. |
-
| . |
- Top
|
|
- Fabiana-
| . Fabiana. |
- Fagus-
| beech. Fagus . |
- Fallopia-
| . Fallopia. |
- Farfugium-
| . Farfugium. |
- Fargesia-
| . Fargesia. |
- Fascicularia-
| . Fascicularia. |
- Fatshederae-
| hybrid genus. Fatshederae . |
- Fatsia-
| . Fatsia. |
- Faucaria-
| . Faucaria. |
- Felicia-
| blue daisy. Felicia . |
- Fendlera-
| . Fendlera. |
- Fenestraria-
| . Fenestraria. |
- Ferocactus-
| . Ferocactus. |
- Ferraria-
| . Ferraria. |
- Ferula-
| giant fennel. Ferula . |
- Festuca-
| fescue. Festuca . |
- Fibigia-
| . Fibigia. |
- Ficus-
| fig. Ficus . |
- Ficus pumila-
| Climbing Ficus (Climbing fig). Ficus pumila. |
- Filipendula-
| . Filipendula. |
- Firmiana-
| . Firmiana. |
- Fittonia-
| . Fittonia. |
- Fitzroya-
| . Fitzroya. |
- Fockea-
| . Fockea. |
- Foeniculum-
| fennel. Foeniculum . |
- Fontanesia-
| . Fontanesia. |
- Forsythia-
| . Forsythia. |
- Fortunella-
| kumquat. Fortunella . |
- Fothergilla-
| . Fothergilla. |
- Fouquieria-
| . Fouquieria. |
- -
| . |
- Fragaria x ananassa.Fragaria-
| strawberry. Fragaria x ananassa.Fragaria . |
- Frailea-
| . Frailea. |
- Francoa-
| . Francoa. |
- Frangipani-
| . Frangipani. |
- Franklinia-
| . Franklinia. |
- Fraxinus-
| ash. Fraxinus . |
- Freesia-
| . Freesia. |
- Fremontodendron-
| . Fremontodendron. |
- Fritillaria-
| fritillary. Fritillaria . |
- Fuchsia-
| . Fuchsia. |
- Furcraea-
| . Furcraea. |
-
| . |
- Top
|
|
- Gagea-
| . Gagea. |
- Gaillardia-
| . Gaillardia. |
- Galanthus-
| snowdrop. Galanthus . |
- Galax-
| . Galax. |
- Galega-
| . Galega. |
- Galium-
| bedstraw. Galium . |
- Galtonia-
| . Galtonia. |
- Gardenia-
| . Gardenia. |
- Garrya-
| . Garrya. |
- Gasteria-
| . Gasteria. |
- Gaultheria-
| . Gaultheria. |
- Gaura-
| . Gaura. |
- Gaylussacia-
| huckleberry. Gaylussacia . |
- Gazania-
| . Gazania. |
- Geissorhiza-
| . Geissorhiza. |
- Gelsemium-
| . Gelsemium. |
- Genista-
| . Genista. |
- Gentiana-
| gentian. Gentiana . |
- Gentianopsis-
| . Gentianopsis. |
- Geranium-
| cranesbill, not same as Pelargonium. Geranium . |
- Gerbera-
| . Gerbera. |
- Gesneria-
| . Gesneria. |
- Geum-
| avens. Geum . |
- Gevuina-
| . Gevuina. |
- Gibbaeum-
| . Gibbaeum. |
- Gilia-
| . Gilia. |
- Gillenia-
| . Gillenia. |
- Ginkgo-
| . Ginkgo. |
- Gladiolus-
| . Gladiolus. |
- Glaucidium-
| . Glaucidium. |
- Glaucium-
| . Glaucium. |
- Gleditsia-
| honey locust. Gleditsia . |
- Globba-
| . Globba. |
- Globularia-
| globe daisy. Globularia . |
- Gloriosa-
| . Gloriosa. |
- Glottiphyllum-
| . Glottiphyllum. |
- Gloxinia-
| . Gloxinia. |
- Glyceria-
| . Glyceria. |
- Glycyrrhiza-
| . Glycyrrhiza. |
- Gomphocarpus-
| . Gomphocarpus. |
- Gomphrena-
| . Gomphrena. |
- Goniolimon-
| . Goniolimon. |
- Goodyera-
| Jewel Orchid. Goodyera . |
- Gordonia-
| . Gordonia. |
- Graptopetalum-
| . Graptopetalum. |
- Graptophyllum-
| . Graptophyllum. |
- Graptoveria-
| hybrid genus. Graptoveria . |
- Grevillea-
| . Grevillea. |
- Grewia-
| . Grewia. |
- Greyia-
| . Greyia. |
- Grindelia-
| . Grindelia. |
- Griselina-
| . Griselina. |
- Gunnera-
| dinosaur food. Gunnera . |
- Guzmania-
| . Guzmania. |
- Gymnocalycium-
| . Gymnocalycium. |
- Gymnocarpium-
| . Gymnocarpium. |
- Gymnocladus-
| . Gymnocladus. |
- Gynandriris-
| . Gynandriris. |
- Gynura-
| . Gynura. |
- Gypsophila-
| . Gypsophila. |
-
| . |
- Top
|
|
- Haageocereus-
| . Haageocereus. |
- Haastia-
| . Haastia. |
- Habenaria-
| an orchid genus. Habenaria . |
- Haberlea-
| . Haberlea. |
- Habranthus-
| . Habranthus. |
- Hacquetia-
| . Hacquetia. |
- Haemanthus-
| blood lily. Haemanthus . |
- Hakea-
| . Hakea. |
- Hakonechloa-
| . Hakonechloa. |
- Halesia-
| silverbell. Halesia . |
- Halimiocistus-
| hybrid genus. Halimiocistus . |
- Halimium-
| . Halimium. |
- Halimodendron-
| . Halimodendron. |
- Hamamelis-
| witch-hazel. Hamamelis . |
- Haplopappus-
| . Haplopappus. |
- Hardenbergia-
| coral pea. Hardenbergia . |
- Harrisia-
| . Harrisia. |
- Hatiora-
| . Hatiora. |
- Haworthia-
| . Haworthia. |
- Hebe-
| . Hebe. |
- Hechtia-
| . Hechtia. |
- Hedera-
| Ivy. Hedera . |
- Hedychium-
| . Hedychium. |
- Hedyotis-
| bluets. Hedyotis . |
- Hedysarum-
| . Hedysarum. |
- Hedyscepe-
| umbrella palm. Hedyscepe . |
- Helenium-
| sneezeweed. Helenium . |
- Helianthemum-
| rock rose. Helianthemum . |
- Helianthus-
| sunflower. Helianthus . |
- Helichrysum-
| . Helichrysum. |
- Heliconia-
| . Heliconia. |
- Helictotrichon-
| . Helictotrichon. |
- Heliocereus-
| . Heliocereus. |
- Heliophila-
| . Heliophila. |
- Heliopsis-
| ox eye. Heliopsis . |
- Heliotropium-
| heliotrope. Heliotropium . |
- Helleborus-
| hellebore. Helleborus . |
- Heloniopsis-
| . Heloniopsis. |
- Hemerocallis-
| daylily. Hemerocallis . |
- Hemigraphis-
| . Hemigraphis. |
- Hepatica-
| . Hepatica. |
- Heptacodium-
| . Heptacodium. |
- Heracleum-
| . Heracleum. |
- Herbertia-
| . Herbertia. |
- Hereroa-
| . Hereroa. |
- Hermannia-
| . Hermannia. |
- Hermodactylus-
| . Hermodactylus. |
- Hesperaloe-
| . Hesperaloe. |
- Hesperantha-
| . Hesperantha. |
- Hesperis-
| . Hesperis. |
- Hesperocallis-
| . Hesperocallis. |
- Heterocentron-
| . Heterocentron. |
- Heterotheca-
| . Heterotheca. |
- Heuchera-
| coral flower. Heuchera . |
- Heucherella-
| hybrid genus. Heucherella . |
- Hibbertia-
| . Hibbertia. |
- Hibiscus-
| rose of Sharon. Hibiscus . |
- Hieracium-
| hawkweed. Hieracium . |
- Himalayacalamus-
| . Himalayacalamus. |
- Hippeastrum-
| amaryllis. Hippeastrum . |
- Hippocrepis-
| . Hippocrepis. |
- Hippophae-
| . Hippophae. |
- Hohenbergia-
| . Hohenbergia. |
- Hohenbergiopsis-
| . Hohenbergiopsis. |
- Hoheria-
| . Hoheria. |
- Holboellia-
| . Holboellia. |
- Holcus-
| . Holcus. |
- Holmskioldia-
| . Holmskioldia. |
- Holodiscus-
| . Holodiscus. |
- Homalocladium-
| ribbon bush. Homalocladium . |
- Homeria-
| . Homeria. |
- Hoodia-
| . Hoodia. |
- Hordeum-
| barley. Hordeum . |
- Horminum
| . Horminum | . | |
- Hosta-
| plantain lily. Hosta . |
- Hottonia-
| . Hottonia. |
- Houttuynia-
| . Houttuynia. |
- Hovea-
| . Hovea. |
- Hovenia-
| . Hovenia. |
- Howea-
| sentry palm. Howea . |
- Hoya-
| wax flower. Hoya . |
- Huernia-
| . Huernia. |
- Humulus-
| hops. Humulus . |
- Hummemannia-
| . Hummemannia. |
- Huntleya-
| . Huntleya. |
- Hyacinthella-
| . Hyacinthella. |
- Hyacinthoides-
| . Hyacinthoides. |
- Hyacinthus-
| hyacinth. Hyacinthus . |
- Hydrangea-
| . Hydrangea. |
- Hydrastis-
| goldenseal. Hydrastis . |
- Hydrocharis-
| frogbit. Hydrocharis . |
- Hydrocleys-
| . Hydrocleys. |
- Hydrocotyle-
| pennywort. Hydrocotyle . |
- Hygrophila-
| . Hygrophila. |
- Hylocereus-
| . Hylocereus. |
- Hylomecon-
| . Hylomecon. |
- Hymenocallis-
| . Hymenocallis. |
- Hymenosporum-
| . Hymenosporum. |
- Hyophorbe-
| bottle palm. Hyophorbe . |
- Hyoscyamus-
| henbane. Hyoscyamus . |
- Hypericum-
| St. John's wort, rose of Sharon. Hypericum . |
- Hyphaene-
| doum palm. Hyphaene . |
- Hypocalymma-
| . Hypocalymma. |
- Hypoestes-
| . Hypoestes. |
- Hypoxis-
| starflower. Hypoxis . |
- Hypsela-
| . Hypsela. |
- Hyssopus-
| hyssop. Hyssopus . |
-
| . |
- Top
|
|
- Iberis-
| candytuft. Iberis . |
- Ibervillea-
| . Ibervillea. |
- Idesia-
| . Idesia. |
- Ilex-
| holly. Ilex . |
- Illicium-
| . Illicium. |
- Impatiens-
| balsam. Impatiens . |
- Imperata-
| . Imperata. |
- Incarvillea-
| . Incarvillea. |
- Indigofera-
| . Indigofera. |
- Inula-
| . Inula. |
- Iochroma-
| . Iochroma. |
- Ipheion-
| . Ipheion. |
- Ipomoea-
| morning glory. Ipomoea . |
- Ipomopsis-
| . Ipomopsis. |
- Iresine-
| . Iresine. |
- Iris-
| . Iris. |
- Isatis-
| . Isatis. |
- Isoplexis-
| . Isoplexis. |
- Isopyrum-
| . Isopyrum. |
- Itea-
| . Itea. |
- Ixia-
| corn lily. Ixia . |
- Ixiolirion-
| . Ixiolirion. |
- Ixora-
| . Ixora. |
-
| . |
- Top
|
|
- Jaborosa-
| . Jaborosa. |
- Jacaranda-
| . Jacaranda. |
- Jacquemontia-
| . Jacquemontia. |
- Jamesia-
| . Jamesia. |
- Jancaea-
| . Jancaea. |
- Jasione-
| . Jasione. |
- Jasminum-
| jasmine, jessamine. Jasminum . |
- Jatropha-
| . Jatropha. |
- Jeffersonia-
| . Jeffersonia. |
- Jovellana-
| . Jovellana. |
- Jovibarba-
| . Jovibarba. |
- Juanulloa-
| . Juanulloa. |
- Jubaea-
| Chilean wine palm. Jubaea . |
- Juglans-
| walnut. Juglans . |
- Juncus-
| rush. Juncus . |
- Juniperus-
| juniper. Juniperus . |
- Justicia-
| . Justicia. |
-
| . |
- Top
|
|
- Kadsura-
| . Kadsura. |
- Kaempferia-
| . Kaempferia. |
- Kalanchoe-
| . Kalanchoe. |
- Kalimeris-
| . Kalimeris. |
- Kalmia-
| Mountain Laurel. Kalmia . |
- Kalmiopsis-
| . Kalmiopsis. |
- Kalopanax-
| . Kalopanax. |
- Kelseya-
| . Kelseya. |
- Kerria-
| . Kerria. |
- Kigelia-
| sausage tree. Kigelia . |
- Kirengeshoma-
| . Kirengeshoma. |
- Kitaibela-
| . Kitaibela. |
- Kleinia-
| . Kleinia. |
- Knautia-
| . Knautia. |
- Knightia-
| . Knightia. |
- Kniphofia-
| . Kniphofia. |
- Koeleria-
| junegrass. Koeleria . |
- Koelreuteria-
| golden rain tree. Koelreuteria . |
- Kohleria-
| . Kohleria. |
- Kolkwitzia-
| beautybush. Kolkwitzia . |
- Kosteletzkya-
| . Kosteletzkya. |
- Kunzea-
| . Kunzea. |
-
| . |
- Top
|
|
- Lablab-
| . Lablab. |
- Laburnocytisus-
| . Laburnocytisus. |
- Laburnum-
| laburnum. Laburnum . |
- Laccospadix-
| . Laccospadix. |
- Lachenalia-
| Cape cowslip. Lachenalia . |
- Laelia-
| an orchid genus. Laelia . |
- Laeliocattleya-
| hybrid orchid genus. Laeliocattleya . |
- Lagarosiphon-
| . Lagarosiphon. |
- Legenophora-
| . Legenophora. |
- Lagerstroemia-
| . Lagerstroemia. |
- Lagunaria-
| . Lagunaria. |
- Lagurus-
| . Lagurus. |
- Lamarckia-
| . Lamarckia. |
- Lambertia-
| . Lambertia. |
- Lamium-
| deadnettle. Lamium . |
- Lampranthus-
| . Lampranthus. |
- Lantana-
| shrub verbena. Lantana . |
- Lapageria-
| . Lapageria. |
- Lardizabala-
| . Lardizabala. |
- Larix-
| larch. Larix . |
- Larrea-
| creosote bush. Larrea . |
- Latania-
| Latan palm. Latania . |
- Lathraea-
| . Lathraea. |
- Lathyrus-
| . Lathyrus. |
- Laurelia-
| . Laurelia. |
- Laurus-
| . Laurus. |
- Lavandula-
| lavender. Lavandula . |
- Lavatera-
| mallow. Lavatera . |
- Lawsonia-
| . Lawsonia. |
- Layia-
| . Layia. |
- Ledebouria-
| . Ledebouria. |
- Ledodendron-
| hybrid genus. Ledodendron . |
- Ledum-
| . Ledum. |
- Leea-
| . Leea. |
- Legousia-
| . Legousia. |
- Leiophyllum-
| . Leiophyllum. |
- Leipoldtia-
| . Leipoldtia. |
- Leitneria-
| . Leitneria. |
- Lemboglossum-
| . Lemboglossum. |
- Lenophyllum-
| . Lenophyllum. |
- Leonotis-
| . Leonotis. |
- Leontice-
| . Leontice. |
- Leontopodium-
| edelweiss. Leontopodium . |
- Lepidozamia-
| . Lepidozamia. |
- Leptinella-
| . Leptinella. |
- Leptodactylon-
| . Leptodactylon. |
- Lechenaultia-
| . Lechenaultia. |
- Lespedeza-
| bush clover. Lespedeza . |
- Leucadendron-
| . Leucadendron. |
- Leucanthemella-
| . Leucanthemella. |
- Leucanthemopsis-
| . Leucanthemopsis. |
- Leucanthemum-
| . Leucanthemum. |
- Leuchtenbergia-
| . Leuchtenbergia. |
- Leucocoryne-
| . Leucocoryne. |
- Leucogenes-
| . Leucogenes. |
- Leucojum-
| snowflake. Leucojum . |
- Leucophyllum-
| . Leucophyllum. |
- Leucophyta-
| . Leucophyta. |
- Leucopogon-
| . Leucopogon. |
- Leucoraoulia-
| hybrid genus. Leucoraoulia . |
- Leucospermum-
| pincushion. Leucospermum . |
- Leucothoe-
| . Leucothoe. |
- Lewisia-
| . Lewisia. |
- Leycesteria-
| . Leycesteria. |
- Leymus-
| . Leymus. |
- Liatris-
| . Liatris. |
- Libertia-
| . Libertia. |
- Libocedrus-
| . Libocedrus. |
- Ligularia-
| . Ligularia. |
- Ligustrum-
| privet. Ligustrum . |
- Lilium-
| lily. Lilium . |
- Limnanthes-
| . Limnanthes. |
- Limnocharis-
| . Limnocharis. |
- Limonium-
| sea lavender. Limonium . |
- Linanthus-
| . Linanthus. |
- Linaria-
| toadflax. Linaria . |
- Lindelofia-
| . Lindelofia. |
- Lindera-
| . Lindera. |
- Lindheimeria-
| star daisy. Lindheimeria . |
- Linnaea-
| twinflower. Linnaea . |
- Linospadix-
| . Linospadix. |
- Linum-
| flax. Linum . |
- Liquidambar-
| sweetgum. Liquidambar . |
- Liriodendron-
| tulip tree. Liriodendron . |
- Liriope-
| lilyturf. Liriope . |
- Lithocarpus-
| . Lithocarpus. |
- Lithodora-
| . Lithodora. |
- Lithophragma-
| . Lithophragma. |
- Lithops-
| . Lithops. |
- Littonia-
| . Littonia. |
- Livistona-
| . Livistona. |
- Lloydia-
| . Lloydia. |
- Loasa-
| . Loasa. |
- Lobelia-
| . Lobelia. |
- Lobularia-
| sweet alyssum. Lobularia . |
- Lodoicea-
| coco-de-mer. Lodoicea . |
- Loiseleuria-
| . Loiseleuria. |
- Lomandra-
| mat rush. Lomandra . |
- Lomatia-
| . Lomatia. |
- Lomatium-
| . Lomatium. |
- Lomatophyllum-
| . Lomatophyllum. |
- Lonicera-
| honeysuckle. Lonicera . |
- Lopezia-
| . Lopezia. |
- Lophomyrtus-
| . Lophomyrtus. |
- Lophospermum-
| . Lophospermum. |
- Lophostemon-
| . Lophostemon. |
- Loropetalum-
| . Loropetalum. |
- Lotus-
| . Lotus. |
- Luculia-
| . Luculia. |
- Ludwigia-
| . Ludwigia. |
- Luma-
| . Luma. |
- Lunaria-
| . Lunaria. |
- Lupinus-
| lupin. Lupinus . |
- Luzula-
| woodrush. Luzula . |
- Lycaste-
| an orchid genus. Lycaste . |
- Lychnis-
| campion. Lychnis . |
- Lycium-
| . Lycium. |
- Lycopodium-
| club moss. Lycopodium . |
- Lycoris-
| . Lycoris. |
- Lygodium-
| climbing fern. Lygodium . |
- Lyonia-
| . Lyonia. |
- Lyonothamnus-
| . Lyonothamnus. |
- Lysichiton-
| Yellow skunk cabbage. Lysichiton . |
- Lysiloma-
| . Lysiloma. |
- Lysimachia-
| . Lysimachia. |
- Lythrum-
| loosestrife. Lythrum . |
-
| . |
- Top
|
|
- Maackia-
| . Maackia. |
- Macfadyena-
| . Macfadyena. |
- Machaeranthera-
| . Machaeranthera. |
- Mackaya-
| . Mackaya. |
- Macleania-
| . Macleania. |
- Macleaya-
| . Macleaya. |
- Maclura-
| . Maclura. |
- Macropidia-
| . Macropidia. |
- Macrozamia-
| . Macrozamia. |
- Magnolia-
| . Magnolia. |
- Mahonia-
| . Mahonia. |
- Maianthemum-
| May lily. Maianthemum . |
- Maihuenia-
| . Maihuenia. |
- Malcolmia-
| . Malcolmia. |
- Malephora-
| . Malephora. |
- Malope-
| . Malope. |
- Malpighia-
| . Malpighia. |
- Malus-
| apple, crabapple. Malus . |
- Malva-
| mallow. Malva . |
- Malvastrum-
| . Malvastrum. |
- Malvaviscus-
| . Malvaviscus. |
- Mammillaria-
| . Mammillaria. |
- Mandevilla-
| . Mandevilla. |
- Mandragora-
| mandrake. Mandragora . |
- Manettia-
| . Manettia. |
- Manglietia-
| . Manglietia. |
- Maranta-
| . Maranta. |
- Margyricarpus-
| . Margyricarpus. |
- Marrubium-
| horehound. Marrubium . |
- Marsilea-
| pepperwort. Marsilea . |
- Masdevallia-
| an orchid genus. Masdevallia . |
- Matteuccia-
| . Matteuccia. |
- Matthiola-
| stock. Matthiola . |
- Maurandella-
| . Maurandella. |
- Maurandya-
| . Maurandya. |
- Maxillaria-
| an orchid genus. Maxillaria . |
- Maytenus-
| . Maytenus. |
- Mazus-
| . Mazus. |
- Meconopsis-
| . Meconopsis. |
- Medicago-
| alfalfa. Medicago . |
- Medinilla-
| . Medinilla. |
- Meehania-
| . Meehania. |
- Megacodon-
| . Megacodon. |
- Megaskepasma-
| . Megaskepasma. |
- Melaleuca-
| paperbark. Melaleuca . |
- Melasphaerula-
| . Melasphaerula. |
- Melastoma-
| . Melastoma. |
- Melia-
| . Melia. |
- Melianthus-
| . Melianthus. |
- Melica-
| melick. Melica . |
- Melicytus-
| . Melicytus. |
- Melinis-
| . Melinis. |
- Meliosma-
| . Meliosma. |
- Melissa-
| balm. Melissa . |
- Melittis-
| Bastard Balm. Melittis . |
- Melocactus-
| . Melocactus. |
- Menispermum-
| moonseed. Menispermum . |
- Mentha-
| mint. Mentha . |
- Mentzelia-
| starflower. Mentzelia . |
- Menyanthes-
| . Menyanthes. |
- Menziesia-
| . Menziesia. |
- Merendera-
| . Merendera. |
- Merremia-
| . Merremia. |
- Mertensia-
| . Mertensia. |
- Mespilus-
| . Mespilus. |
- Metasequoia-
| dawn redwood. Metasequoia . |
- Metrosideros-
| . Metrosideros. |
- Meum-
| . Meum. |
- Mexicoa-
| . Mexicoa. |
- Michauxia-
| . Michauxia. |
- Michelia-
| . Michelia. |
- Microbiota-
| . Microbiota. |
- Microcachrys-
| . Microcachrys. |
- Microlepia-
| . Microlepia. |
- Micromeria-
| . Micromeria. |
- Mikania-
| . Mikania. |
- Milium-
| . Milium. |
- Milla-
| . Milla. |
- Millettia-
| . Millettia. |
- Miltonia-
| an orchid genus. Miltonia . |
- Miltoniopsis-
| pansy orchid. Miltoniopsis . |
- Mimetes-
| . Mimetes. |
- Mimosa-
| mimosa, or sensitive plant. Mimosa . |
- Mimulus-
| monkey flower. Mimulus . |
- Mirabilis-
| . Mirabilis. |
- Miscanthus-
| . Miscanthus. |
- Mitchella-
| partridge berry. Mitchella . |
- Mitella-
| . Mitella. |
- Mitraria-
| . Mitraria. |
- Molinia-
| . Molinia. |
- Moltkia-
| . Moltkia. |
- Moluccella-
| . Moluccella. |
- Monadenium-
| . Monadenium. |
- Monanthes-
| . Monanthes. |
- Monarda-
| bee balm. Monarda . |
- Monardella-
| . Monardella. |
- Monstera-
| . Monstera. |
- Moraea-
| . Moraea. |
- Morina-
| . Morina. |
- Morisia-
| . Morisia. |
- Morus-
| Mulberry. Morus . |
- Mucuna-
| . Mucuna. |
- Muehlenbeckia-
| . Muehlenbeckia. |
- Mukdenia-
| . Mukdenia. |
- Musa-
| banana, plantain. Musa . |
- Muscari-
| grape hyacinth. Muscari . |
- Mussaenda-
| . Mussaenda. |
- Mutisia-
| . Mutisia. |
- Myoporum-
| . Myoporum. |
- Myosotidium-
| . Myosotidium. |
- Myosotis-
| forget-me-not. Myosotis . |
- Myrica-
| . Myrica. |
- Myriophyllum-
| milfoil. Myriophyllum . |
- Myrrhis-
| sweet cicely. Myrrhis . |
- Myrsine-
| . Myrsine. |
- Myrteola-
| . Myrteola. |
- Myrtillocactus-
| . Myrtillocactus. |
- Myrtus-
| myrtle. Myrtus . |
-
| . |
- Top
|
|
- Nandina-
| heavenly bamboo. Nandina . |
- Narcissus-
| daffodil. Narcissus . |
- Nasturtium-
| watercress. Nasturtium . |
- Nautilocalyx-
| . Nautilocalyx. |
- Nectaroscordium-
| . Nectaroscordium. |
- Neillia-
| . Neillia. |
- Nelumbo-
| lotus. Nelumbo . |
- Nematanthus-
| . Nematanthus. |
- Nemesia-
| . Nemesia. |
- Nemopanthus-
| mountain holly. Nemopanthus . |
- Nemophila-
| . Nemophila. |
- Neobuxbaumia-
| . Neobuxbaumia. |
- Neolitsea-
| . Neolitsea. |
- Neolloydia-
| . Neolloydia. |
- Neomarica-
| . Neomarica. |
- Neoporteria-
| . Neoporteria. |
- Neoregelia-
| . Neoregelia. |
- Nepenthes-
| pitcher plant. Nepenthes . |
- Nepeta-
| catmint. Nepeta . |
- Nephrolepis-
| . Nephrolepis. |
- Nerine-
| . Nerine. |
- Nerium-
| oleander. Nerium . |
- Nertera-
| . Nertera. |
- Nicandra-
| . Nicandra. |
- Nicotiana-
| tobacco. Nicotiana . |
- Nidularium-
| . Nidularium. |
- Nierembergia-
| . Nierembergia. |
- Nigella-
| . Nigella. |
- Nipponanthemum-
| . Nipponanthemum. |
- Nolana-
| . Nolana. |
- Nomocharis-
| . Nomocharis. |
- Nopalxochia-
| . Nopalxochia. |
- Nothofagus-
| southern beech. Nothofagus . |
- Notholirion-
| . Notholirion. |
- Nothoscordum-
| false garlic. Nothoscordum . |
- Notospartium-
| . Notospartium. |
- Nuphar-
| spatterdock. Nuphar . |
- Nymania-
| . Nymania. |
- Nymphaea-
| waterlily. Nymphaea . |
- Nymphoides-
| floating heart. Nymphoides . |
- Nyssa-
| tupelo. Nyssa . |
-
| . |
- Top
|
|
- Obregonia-
| . Obregonia. |
- Ochagavia-
| . Ochagavia. |
- Ochna-
| . Ochna. |
- Ocimum-
| . Ocimum. |
- Odontioda-
| hybrid orchid genus. Odontioda . |
- Odontocidium-
| hybrid orchid genus. Odontocidium . |
- Odontoglossum-
| an orchid genus. Odontoglossum . |
- Odontonema-
| . Odontonema. |
- Odontonia-
| hybrid orchid genus. Odontonia . |
- Oemleria-
| . Oemleria. |
- Oenanthe-
| water dropwort. Oenanthe . |
- Oenothera-
| evening primrose, sundrops. Oenothera . |
- Olea-
| olive. Olea . |
- Olearia-
| daisy bush. Olearia . |
- Olneya-
| . Olneya. |
- Olsynium-
| . Olsynium. |
- Omphalodes-
| navelwort. Omphalodes . |
- Omphalogramma-
| . Omphalogramma. |
- Oncidium-
| an orchid genus. Oncidium . |
- Onoclea-
| . Onoclea. |
- Ononis-
| restharrow. Ononis . |
- Onopordum-
| . Onopordum. |
- Onosma-
| . Onosma. |
- Oophytum-
| . Oophytum. |
- Ophiopogon-
| lilyturf. Ophiopogon . |
- Ophrys-
| an orchid genus. Ophrys . |
- Ophthalmophyllum-
| . Ophthalmophyllum. |
- Oplismenus-
| . Oplismenus. |
- Opuntia-
| prickly pears cactus. Opuntia . |
- Orbea-
| . Orbea. |
- Orbeopsis-
| . Orbeopsis. |
- Orchis-
| an orchid genus. Orchis . |
- Oreocereus-
| . Oreocereus. |
- Origanum-
| marjoram, oregano. Origanum . |
- Orixa-
| . Orixa. |
- Ornithogalum-
| . Ornithogalum. |
- Ornithophora-
| . Ornithophora. |
- Orontium-
| golden club. Orontium . |
- Orostachys-
| . Orostachys. |
- Oroya-
| . Oroya. |
- Ortegocactus-
| . Ortegocactus. |
- Orthophytum-
| . Orthophytum. |
- Orthrosanthus-
| . Orthrosanthus. |
- Orychophragmus-
| . Orychophragmus. |
- Oryza-
| rice. Oryza . |
- Osbeckia-
| . Osbeckia. |
- Osmanthus-
| . Osmanthus. |
- Osmarea-
| . Osmarea. |
- Osmaronia-
| . Osmaronia. |
- Osmunda-
| royal fern. Osmunda . |
- Osteomeles-
| . Osteomeles. |
- Osteospermum-
| . Osteospermum. |
- Ostrowskia-
| giant bellflower. Ostrowskia . |
- Ostrya-
| . Ostrya. |
- Othonna-
| . Othonna. |
- Ourisia-
| . Ourisia. |
- Oxalis-
| shamrock, sorrel. Oxalis . |
- Oxydendrum-
| . Oxydendrum. |
- Ozothamnus-
| . Ozothamnus. |
-
| . |
- Top
|
|
- Pachistima-
| . Pachistima. |
- Pachycereus-
| . Pachycereus. |
- Pachycormus-
| . Pachycormus. |
- Pachycymbium-
| . Pachycymbium. |
- Pachyphragma-
| . Pachyphragma. |
- Pachyphytum-
| . Pachyphytum. |
- Pachypodium-
| . Pachypodium. |
- Pachysandra-
| . Pachysandra. |
- Pachystachys-
| . Pachystachys. |
- Pachystegia-
| . Pachystegia. |
- Pachystima-
| . Pachystima. |
- Pachyveria-
| hybrid genus. Pachyveria . |
- Paeonia-
| peony. Paeonia . |
- Paliurus-
| . Paliurus. |
- Pamianthe-
| . Pamianthe. |
- Panax-
| ginseng. Panax . |
- Pancratium-
| sea lily. Pancratium . |
- Pandanus-
| screw pine. Pandanus . |
- Pandorea-
| . Pandorea. |
- Panicum-
| . Panicum. |
- Pansy-
| . Pansy. |
- Papaver-
| poppy. Papaver . |
- Paphiopedilum-
| slipper orchid. Paphiopedilum . |
- Paradisea-
| paradise lily. Paradisea . |
- Parahebe-
| . Parahebe. |
- Paraquilegia-
| . Paraquilegia. |
- Parkinsonia-
| . Parkinsonia. |
- Parnassia-
| . Parnassia. |
- Parochetus-
| . Parochetus. |
- Parodia-
| . Parodia. |
- Paronychia-
| . Paronychia. |
- Parrotia-
| . Parrotia. |
- Parrotiopsis-
| . Parrotiopsis. |
- Parthenocissus-
| . Parthenocissus. |
- Passiflora.
| granadilla, passionflower. Passiflora mollissima. "Banana Passion Flower" Passiflora mollissima or Granadilla
|
- Patersonia-
| . Patersonia. |
- Patrinia-
| . Patrinia. |
- Paulownia-
| . Paulownia. |
- Paurotis-
| . Paurotis. |
- Pavonia-
| . Pavonia. |
- Pedilanthus-
| . Pedilanthus. |
- Pediocactus-
| . Pediocactus. |
- Pelargonium-
| geranium. Pelargonium . |
- Pellaea-
| . Pellaea. |
- Peltandra-
| arrow arum. Peltandra . |
- Peltoboykinia-
| . Peltoboykinia. |
- Peltophorum-
| . Peltophorum. |
- Peniocereus-
| . Peniocereus. |
- Pennisetum-
| . Pennisetum. |
- Penstemon-
| . Penstemon. |
- Pentachrondra-
| . Pentachrondra. |
- Pentaglottis-
| . Pentaglottis. |
- Pentas-
| . Pentas. |
- Peperomia-
| . Peperomia. |
- Peraphyllum-
| . Peraphyllum. |
- Pereskia-
| . Pereskia. |
- Perezia-
| . Perezia. |
- Pericallis-
| . Pericallis. |
- Perilla-
| . Perilla. |
- Periploca-
| . Periploca. |
- Perovskia-
| . Perovskia. |
- Pernettya-
| now included in Gaultheria. Pernettya . |
- Persea-
| . Persea. |
- Persicaria-
| fleeceflower, knotweed. Persicaria . |
- Petasites-
| butterbur, sweet coltsfoot. Petasites . |
- Petrea-
| . Petrea. |
- Petrocosmea-
| . Petrocosmea. |
- Petrophile-
| . Petrophile. |
- Petrophyton-
| . Petrophyton. |
- Petrophytum-
| . Petrophytum. |
- Petrorhagia-
| . Petrorhagia. |
- Petroselinum-
| parsley. Petroselinum . |
- Petteria-
| . Petteria. |
- Petunia-
| . Petunia. |
- Phacelia-
| . Phacelia. |
- Phaedranassa-
| queen lily. Phaedranassa . |
- Phaius-
| an orchid genus. Phaius . |
- Phalaenopsis-
| moth orchid. Phalaenopsis . |
- Phalaris-
| . Phalaris. |
- Phebalium-
| . Phebalium. |
- Phegopteris-
| beech fern. Phegopteris . |
- Phellodendron-
| cork tree. Phellodendron . |
- Philadelphus-
| mock orange. Philadelphus . |
- Philageria-
| hybrid genus. Philageria . |
- Philesia-
| . Philesia. |
- Phillyrea-
| . Phillyrea. |
- Philodendron-
| . Philodendron. |
- Phlebodium-
| . Phlebodium. |
- Phlomis-
| . Phlomis. |
- Phlox-
| Moss Phlox . Phlox Subulata. |
- Phoenix-
| date palm. Phoenix . |
- Phormium-
| . Phormium. |
- Photinia-
| . Photinia. |
- Phragmipedium-
| an orchid genus. Phragmipedium . |
- Phragmites-
| reed. Phragmites . |
- Phuopsis-
| . Phuopsis. |
- Phygelius-
| . Phygelius. |
- Phylica-
| Cape myrtle. Phylica . |
- Phylliopsis-
| hybrid genus. Phylliopsis . |
- Phyllocladus-
| toatoa. Phyllocladus . |
- Phyllodoce-
| . Phyllodoce. |
- Phyllostachys-
| . Phyllostachys. |
- Phyllothamnus-
| hybrid genus. Phyllothamnus . |
- Physalis-
| ground cherry. Physalis . |
- Physaria-
| bladderpod. Physaria . |
- Physocarpus-
| . Physocarpus. |
- Physoplexis-
| . Physoplexis. |
- Physostegia-
| . Physostegia. |
- Phyteuma-
| . Phyteuma. |
- Phytolacca-
| pokeweed. Phytolacca . |
- Picea-
| spruce. Picea . |
- Picrasma-
| . Picrasma. |
- Pieris-
| . Pieris. |
- Pilea-
| . Pilea. |
- Pileostegia-
| . Pileostegia. |
- Pileosella-
| . Pileosella. |
- Pilosocereus-
| . Pilosocereus. |
- Pimelea-
| . Pimelea. |
- Pimpinella-
| . Pimpinella. |
- Pinanga-
| . Pinanga. |
- Pinckneya-
| . Pinckneya. |
- Pinellia-
| . Pinellia. |
- Pinguicula-
| butterwort. Pinguicula . |
- Pinus-
| pine. Pinus . |
- Piper-
| pepper. Piper . |
- Piptanthus-
| . Piptanthus. |
- Pisonia-
| . Pisonia. |
- Pistacia-
| pistachio. Pistacia . |
- Pistia-
| . Pistia. |
- Pitcairnia-
| . Pitcairnia. |
- Pithecellobium-
| . Pithecellobium. |
- Pittosporum-
| . Pittosporum. |
- Pityrogramma-
| . Pityrogramma. |
- Plantago-
| plantain. Plantago . |
- Platanus-
| plane tree, sycamore. Platanus . |
- Platycarya-
| . Platycarya. |
- Platycerium-
| staghorn fern. Platycerium . |
- Platycladus-
| Chinese arborvitae. Platycladus . |
- Platycodon-
| balloon flower. Platycodon . |
- Platystemon-
| creamcups. Platystemon . |
- Plectranthus-
| . Plectranthus. |
- Pleioblastus-
| . Pleioblastus. |
- Pleione-
| an orchid genus. Pleione . |
- Pleiospilos-
| living granite. Pleiospilos . |
- Pleurothallis-
| an orchid genus. Pleurothallis . |
- Plumeria-
| frangipani. Plumeria . |
- Poa-
| . Poa. |
- Podalyria-
| . Podalyria. |
- Podocarpus-
| . Podocarpus. |
- Podophyllum-
| mayapple. Podophyllum . |
- Podranea-
| . Podranea. |
- Polemonium-
| jacob's ladder, abscess root. Polemonium . |
- Polianthes-
| . Polianthes. |
- Poliothyrsis-
| . Poliothyrsis. |
- Polygala-
| milkwort, seneca, snakeroot. Polygala . |
- Polygonatum-
| . Polygonatum. |
- Polygonum-
| knotweed, knotgrass. Polygonum . |
- Polypodium-
| . Polypodium. |
- Polyscias-
| . Polyscias. |
- Polystichum-
| . Polystichum. |
- Poncirus-
| . Poncirus. |
- Pongamia-
| . Pongamia. |
- Pontederia-
| pickerel weed. Pontederia . |
- Populus-
| aspen, poplar, cottonwood. Populus . |
- Porana-
| . Porana. |
- Portea-
| . Portea. |
- Portulaca-
| purslane, moss rose. Portulaca . |
- Portulacaria-
| . Portulacaria. |
- Posoqueria-
| . Posoqueria. |
- Potamogeton-
| . Potamogeton. |
- Potentilla-
| cinquefoil. Potentilla . |
- Pothos-
| . Pothos. |
- Potinara-
| hybrid orchid genus. Potinara . |
- Pratia-
| . Pratia. |
- Primula-
| primrose. Primula . |
- Prinsepia-
| . Prinsepia. |
- Pritchardia-
| . Pritchardia. |
- Proboscidea-
| unicorn plant. Proboscidea . |
- Promenaea-
| . Promenaea. |
- Prosopis-
| mesquite. Prosopis . |
- Prostanthera-
| Mint Bush. Prostanthera . |
- Protea-
| . Protea. |
- Prumnopitys-
| . Prumnopitys. |
- Prunella-
| self-heal. Prunella . |
- Prunus-
| almond, apricot, cherry, peach, plum. Prunus . |
- Pseuderanthemum-
| . Pseuderanthemum. |
- Pseudocydonia-
| . Pseudocydonia. |
- Pseudolarix-
| golden-larch. Pseudolarix . |
- Pseudopanax-
| . Pseudopanax. |
- Pseudosasa-
| . Pseudosasa. |
- Pseudotsuga-
| douglas-fir. Pseudotsuga . |
- Pseudowintera-
| . Pseudowintera. |
- Psiolotum-
| . Psiolotum. |
- Psychopsis-
| butterfly orchid. Psychopsis . |
- Psylliostachys-
| statice. Psylliostachys . |
- Ptelea-
| . Ptelea. |
- Pteris-
| brake, table fern. Pteris . |
- Pterocactus-
| . Pterocactus. |
- Pterocarya-
| wingnut. Pterocarya . |
- Pteroceltis-
| . Pteroceltis. |
- Pterocephalus-
| . Pterocephalus. |
- Pterodiscus-
| . Pterodiscus. |
- Pteropogon-
| . Pteropogon. |
- Pterostyrax-
| . Pterostyrax. |
- Ptilotus-
| . Ptilotus. |
- Ptychosperma-
| . Ptychosperma. |
- Pueraria-
| . Pueraria. |
- Pulmonaria-
| lungwort. Pulmonaria . |
- Pulsatilla-
| . Pulsatilla. |
- Pultenaea-
| . Pultenaea. |
- Punica-
| pomegranate. Punica . |
- Purshia-
| . Purshia. |
- Puschkinia-
| . Puschkinia. |
- Putoria-
| . Putoria. |
- Puya-
| . Puya. |
- Pycnanthemum-
| . Pycnanthemum. |
- Pycnostachys-
| . Pycnostachys. |
- Pyracantha-
| firethorn. Pyracantha . |
- Pyrola-
| wintergreen. Pyrola . |
- Pyrostegia-
| . Pyrostegia. |
- Pyrrosia-
| . Pyrrosia. |
- Pyrus-
| pear. Pyrus . |
-
| . |
- Top
|
|
- Quamoclit-
| . Quamoclit. |
- Quaqua-
| . Quaqua. |
- Quercus-
| oak. Quercus . |
- Quesnelia-
| . Quesnelia. |
- Quisqualis-
| . Quisqualis. |
-
| . |
- Top
|
|
- Ramonda-
| . Ramonda. |
- Ranunculus-
| buttercup, crowfoot. Ranunculus . |
- Ranzania-
| . Ranzania. |
- Raoulia-
| . Raoulia. |
- Raphia-
| raffia. Raphia . |
- Ratibida-
| . Ratibida. |
- Ravenala-
| traveler's tree. Ravenala . |
- Rebutia-
| . Rebutia. |
- Rehderodendron-
| . Rehderodendron. |
- Rehmannia-
| . Rehmannia. |
- Reineckia-
| . Reineckia. |
- Reinwardtia-
| . Reinwardtia. |
- Reseda-
| Mignonette. Reseda . |
- Retama-
| . Retama. |
- Rhamnus-
| . Rhamnus. |
- Rhaphidophora-
| . Rhaphidophora. |
- Rhaphiolepis-
| . Rhaphiolepis. |
- Rhapidophyllum-
| needle palm. Rhapidophyllum . |
- Rhapis-
| lady palm. Rhapis . |
- Rheum-
| rhubarb. Rheum . |
- Rhexia-
| . Rhexia. |
- Rhipsalis-
| . Rhipsalis. |
- Rhodanthe-
| strawflower. Rhodanthe . |
- Rhodanthemum-
| . Rhodanthemum. |
- Rhodiola-
| . Rhodiola. |
- Rhodochiton-
| . Rhodochiton. |
- Rhododendron-
| . Rhododendron. |
- Rhodohypoxis-
| . Rhodohypoxis. |
- Rhodophiala-
| . Rhodophiala. |
- Rhodothamnus-
| . Rhodothamnus. |
- Rhodotypos-
| . Rhodotypos. |
- Rhoeo-
| . Rhoeo. |
- Rhoicissus-
| . Rhoicissus. |
- Rhombophyllum-
| . Rhombophyllum. |
- Rhus-
| sumac. Rhus . |
- Rhynchelytrum-
| . Rhynchelytrum. |
- Rhynchostylis-
| an orchid genus. Rhynchostylis . |
- Ribes-
| currant. Ribes . |
- Richea-
| . Richea. |
- Ricinus-
| castor-oil plant. Ricinus . |
- Rigidella-
| . Rigidella. |
- Robinia-
| . Robinia. |
- Rochea-
| . Rochea. |
- Rodgersia-
| . Rodgersia. |
- Rodriguezia-
| . Rodriguezia. |
- Rohdea-
| . Rohdea. |
- Romanzoffia-
| . Romanzoffia. |
- Romneya-
| Matilija poppy, tree poppy. Romneya . |
- Romulea-
| . Romulea. |
- Rondeletia-
| . Rondeletia. |
- Rosa-
| rose. Rosa . |
- Roscoea-
| . Roscoea. |
- Rosmarinus-
| rosemary. Rosmarinus . |
- Rossioglossum-
| . Rossioglossum. |
- Rothmannia-
| . Rothmannia. |
- Roystonea-
| royal palm. Roystonea . |
- Rubus-
| raspberry. Rubus . |
- Rudbeckia-
| coneflower. Rudbeckia . |
- Ruellia-
| . Ruellia. |
- Rumex-
| dock. Rumex . |
- Rumohra-
| . Rumohra. |
- Rupicapnos-
| . Rupicapnos. |
- Ruschia-
| . Ruschia. |
- Ruscus-
| . Ruscus. |
- Russelia-
| . Russelia. |
- Ruta-
| rue. Ruta . |
-
| . |
- Top
|
|
- Sabal-
| palmetto. Sabal . |
- Saccharum-
| plume grass, sugar cane. Saccharum . |
- Sadleria-
| . Sadleria. |
- Sagina-
| pearlwort. Sagina . |
- Sagittaria-
| arrowhead. Sagittaria . |
- Saintpaulia-
| African violet. Saintpaulia . |
- Salix-
| willow. Salix . |
- Salpiglossis-
| . Salpiglossis. |
- Salvia-
| sage. Salvia . |
- Salvinia-
| . Salvinia. |
- Sambucus-
| elder. Sambucus . |
- Sanchezia-
| . Sanchezia. |
- Sandersonia-
| . Sandersonia. |
- Sanguinaria-
| bloodroot. Sanguinaria . |
- Sanguisorba-
| burnet. Sanguisorba . |
- Sansevieria-
| . Sansevieria. |
- Santolina-
| . Santolina. |
- Sanvitalia-
| creeping zinnia. Sanvitalia . |
- Sapindus-
| . Sapindus. |
- Sapium-
| tallow tree. Sapium . |
- Saponaria-
| soapwort. Saponaria . |
- Sarcocapnos-
| . Sarcocapnos. |
- Sarcocaulon-
| . Sarcocaulon. |
- Sarcococca-
| . Sarcococca. |
- Saritaea-
| . Saritaea. |
- Sarmienta-
| . Sarmienta. |
- Sarracenia-
| pitcher plant. Sarracenia . |
- Sasa-
| . Sasa. |
- Sassafras-
| . Sassafras. |
- Satureja-
| savory. Satureja . |
- Sauromatum-
| . Sauromatum. |
- Saxegothaea-
| . Saxegothaea. |
- Saxifraga-
| saxifrage. Saxifraga . |
- Scabiosa-
| scabious plant. Scabiosa . |
- Scadoxus-
| blood lily. Scadoxus . |
- Scaevola-
| . Scaevola. |
- Schefflera-
| . Schefflera. |
- Schima-
| . Schima. |
- Schinus-
| . Schinus. |
- Schisandra-
| . Schisandra. |
- Schizachyrium-
| . Schizachyrium. |
- Schizanthus-
| . Schizanthus. |
- Schizopetalon-
| . Schizopetalon. |
- Schizophragma-
| . Schizophragma. |
- Schizostylis-
| . Schizostylis. |
- Schlumbergera-
| . Schlumbergera. |
- Schoenoplectus-
| . Schoenoplectus. |
- Schomburgkia-
| . Schomburgkia. |
- Schotia-
| . Schotia. |
- Schwantesia-
| . Schwantesia. |
- Sciadopitys-
| . Sciadopitys. |
- Scilla-
| . Scilla. |
- Scindapsus-
| . Scindapsus. |
- Scirpoides-
| . Scirpoides. |
- Sclerocactus-
| . Sclerocactus. |
- Scoliopsus-
| . Scoliopsus. |
- Scopolia-
| . Scopolia. |
- Scrophularia-
| figwort. Scrophularia . |
- Scutellaria-
| . Scutellaria. |
- Securinega-
| . Securinega. |
- Sedum-
| stonecrop. Sedum . |
- Selaginella-
| . Selaginella. |
- Selago-
| . Selago. |
- Selenicereus-
| . Selenicereus. |
- Selinum-
| . Selinum. |
- Semele-
| . Semele. |
- Semiaquilegia-
| . Semiaquilegia. |
- Semiarundinaria-
| . Semiarundinaria. |
- Sempervivum-
| hens and chicks. Sempervivum . |
- Senecio-
| ragwort. Senecio . |
- Senna-
| herb. Senna . |
- Sequoia-
| coast redwood. Sequoia . |
- Sequoiadendron-
| giant sequoia. Sequoiadendron . |
- Seriphidium-
| . Seriphidium. |
- Serissa-
| . Serissa. |
- Serruria-
| . Serruria. |
- Sesbania-
| . Sesbania. |
- Sesleria-
| . Sesleria. |
- Setaria-
| . Setaria. |
- Shepherdia-
| . Shepherdia. |
- Shibataea-
| . Shibataea. |
- Shortia-
| . Shortia. |
- Sibiraea-
| . Sibiraea. |
- Sidalcea-
| . Sidalcea. |
- Sideritis-
| . Sideritis. |
- Silene-
| campion. Silene . |
- Silphium-
| . Silphium. |
- Silybum-
| . Silybum. |
- Simmondsia-
| jojoba. Simmondsia . |
- Sinningia-
| . Sinningia. |
- Sinocalycanthus-
| . Sinocalycanthus. |
- Sinofranchetia-
| . Sinofranchetia. |
- Sinojackia-
| . Sinojackia. |
- Sinowilsonia-
| . Sinowilsonia. |
- Sisyrinchium-
| . Sisyrinchium. |
- Skimmia-
| . Skimmia. |
- Smilacina-
| . Smilacina. |
- Smilax-
| . Smilax. |
- Smithiantha-
| . Smithiantha. |
- Smyrnium-
| . Smyrnium. |
- Sobralia-
| . Sobralia. |
- Solandra-
| . Solandra. |
- Solanum-
| potato, nightshade. Solanum . |
- Soldanella-
| snowbell. Soldanella . |
- Soleirolia-
| . Soleirolia. |
- Solenopsis-
| . Solenopsis. |
- Solenostemon-
| . Solenostemon. |
- Solidago-
| goldenrod. Solidago . |
- Solidaster-
| supposedly hybrid genus; see Solidago. Solidaster . |
- Sollya-
| . Sollya. |
- Sonerila-
| . Sonerila. |
- Sophora-
| . Sophora. |
- Sophrolaeliocattleya-
| trigeneric hybrid orchid. Sophrolaeliocattleya . |
- Sophronitis-
| an orchid genus. Sophronitis . |
- Sorbaria-
| . Sorbaria. |
- Sorbus-
| rowan, whitebeam. Sorbus . |
- Sorghastrum-
| . Sorghastrum. |
- Sparaxis-
| . Sparaxis. |
- Sparganium-
| . Sparganium. |
- -
| . |
- Spartina-
| cord grass. Spartina . |
- Spartium-
| broom. Spartium . |
- Spathiphyllum-
| . Spathiphyllum. |
- Spathodea-
| . Spathodea. |
- Sphaeralcea-
| . Sphaeralcea. |
- Spigelia-
| . Spigelia. |
- Spiraea-
| spirea. Spiraea . |
- Sprianthes-
| an orchid genus. Sprianthes . |
- Sporobolus-
| . Sporobolus. |
- Sprekelia-
| . Sprekelia. |
- Stachys-
| betony. Stachys . |
- Stachyurus-
| . Stachyurus. |
- Stangeria-
| . Stangeria. |
- Stanhopea-
| an orchid genus. Stanhopea . |
- Stapelia-
| . Stapelia. |
- Stapelianthus-
| . Stapelianthus. |
- Staphylea-
| bladdernut. Staphylea . |
- Stauntonia-
| . Stauntonia. |
- Stenanthium-
| . Stenanthium. |
- Stenocactus-
| . Stenocactus. |
- Stenocarpus-
| . Stenocarpus. |
- Stenocereus-
| . Stenocereus. |
- Stenomesson-
| . Stenomesson. |
- Stenotaphron-
| . Stenotaphron. |
- Stenotus-
| . Stenotus. |
- Stephanandra-
| . Stephanandra. |
- Stephanocereus-
| . Stephanocereus. |
- Stephanotis-
| . Stephanotis. |
- Sternbergia-
| . Sternbergia. |
- Stigmaphyllon-
| . Stigmaphyllon. |
- Stipa-
| . Stipa. |
- Stokesia-
| . Stokesia. |
- Stomatium-
| . Stomatium. |
- Stratiotes-
| . Stratiotes. |
- Strelitzia-
| Bird of Paradise plant. Strelitzia . |
- Streptocarpus-
| Cape primrose. Streptocarpus . |
- Streptosolen-
| . Streptosolen. |
- Strobilanthes-
| . Strobilanthes. |
- Stromanthe-
| . Stromanthe. |
- Strombocactus-
| . Strombocactus. |
- Strongylodon-
| . Strongylodon. |
- Stuartia-
| . Stuartia. |
- Stylidium-
| . Stylidium. |
- Stylophorum-
| . Stylophorum. |
- Styphelia-
| . Styphelia. |
- Styrax-
| . Styrax. |
- Succisa-
| . Succisa. |
- Sulcorebutia-
| . Sulcorebutia. |
- Sutera-
| . Sutera. |
- Sutherlandia-
| . Sutherlandia. |
- Swainsona-
| . Swainsona. |
- Swainsonia-
| . Swainsonia. |
- Syagrus-
| . Syagrus. |
- Sycoparrotia-
| hybrid genus. Sycoparrotia . |
- Sycopsis-
| . Sycopsis. |
- Symphoricarpos-
| snowberry. Symphoricarpos . |
- Symphyandra-
| . Symphyandra. |
- Symphytum-
| comfrey. Symphytum . |
- Symplocos-
| . Symplocos. |
- Synadenium-
| . Synadenium. |
- Syneilesis-
| . Syneilesis. |
- Syngonium-
| . Syngonium. |
- Synnotia-
| . Synnotia. |
- Synthyris-
| . Synthyris. |
- Syringa-
| lilac. Syringa . |
- Syzygium-
| rose apple. Syzygium . |
-
| . |
- Top
|
|
- Tabebuia-
| . Tabebuia. |
- Tabernaemontana-
| . Tabernaemontana. |
- Tacca-
| . Tacca. |
- Tagetes-
| Mexican or French marigold. Tagetes . |
- Talinum-
| fameflower. Talinum . |
- Tamarix-
| tamarisk. Tamarix . |
- Tanacetum-
| tansy. Tanacetum . |
- Tanakaea-
| . Tanakaea. |
- Tanakea-
| . Tanakea. |
- Tapeinochilus-
| . Tapeinochilus. |
- Taxodium-
| bald cypress. Taxodium . |
- Taxus-
| yew. Taxus . |
- Tecoma-
| plant. Tecoma . |
- Tecomanthe-
| . Tecomanthe. |
- Tecomaria-
| . Tecomaria. |
- Tecophilaea-
| . Tecophilaea. |
- Telekia-
| . Telekia. |
- Telephium-
| . Telephium. |
- Tellima-
| . Tellima. |
- Telopea-
| waratah. Telopea . |
- Templetonia-
| . Templetonia. |
- Terminalia-
| plant. Terminalia . |
- Ternstroemia-
| . Ternstroemia. |
- Tetracentron-
| . Tetracentron. |
- Tetradium-
| bee tree. Tetradium . |
- Tetranema-
| . Tetranema. |
- Tetraneuris-
| . Tetraneuris. |
- Tetrapanax-
| . Tetrapanax. |
- Tetrastigma-
| . Tetrastigma. |
- Tetratheca-
| . Tetratheca. |
- Teucrium-
| . Teucrium. |
- Thalia-
| plant. Thalia . |
- Thalictrum-
| . Thalictrum. |
- Thelesperma-
| . Thelesperma. |
- Thelocactus-
| . Thelocactus. |
- Thelypteris-
| . Thelypteris. |
- Thermopsi-
| . Thermopsi. |
- Thespesia-
| . Thespesia. |
- Thevetia-
| . Thevetia. |
- Thlaspi-
| . Thlaspi. |
- Thrinax-
| thatch palm. Thrinax . |
- Thryptomene-
| heath myrtle. Thryptomene . |
- Thuja-
| thuja, arborvitae. Thuja . |
- Thujopsis-
| hiba. Thujopsis . |
- Thunbergia-
| . Thunbergia. |
- Thymophylla-
| . Thymophylla. |
- Thymus-
| thyme. Thymus . |
- Tiarella-
| . Tiarella. |
- Tibouchina-
| . Tibouchina. |
- Tigridia-
| . Tigridia. |
- Tilia-
| linden. Tilia . |
- Tillandsia-
| air plant, Spanish moss. Tillandsia . |
- Tipuana-
| . Tipuana. |
- Titanopsis-
| . Titanopsis. |
- Tithonia-
| Mexican sunflower. Tithonia . |
- Todea-
| . Todea. |
- Tolmiea-
| . Tolmiea. |
- Tolpis-
| . Tolpis. |
- Toona-
| . Toona. |
- Torenia-
| . Torenia. |
- Torreya-
| nutmeg yew. Torreya . |
- Tovara-
| . Tovara. |
- Townsendia-
| . Townsendia. |
- Trachelium-
| . Trachelium. |
- Trachelospermum-
| . Trachelospermum. |
- Trachycarpus-
| chusan palm. Trachycarpus . |
- Trachymene-
| . Trachymene. |
- Tradescantia-
| spiderwort. Tradescantia . |
- Trapa-
| water caltrop. Trapa . |
- Trichodiadema-
| . Trichodiadema. |
- Trichosanthes-
| . Trichosanthes. |
- Tricyrtis-
| toad lily. Tricyrtis . |
- Trientalis-
| . Trientalis. |
- Trifolium-
| Shamrock - seamair bhán - The Irish Shamrock. Trifolium repens White clover . |
- Trillium-
| . Trillium. |
- Tripetaleia-
| . Tripetaleia. |
- Tripterygium-
| . Tripterygium. |
- Triteleia-
| triplet lily. Triteleia . |
- Tritonia-
| . Tritonia. |
- Trochodendron-
| . Trochodendron. |
- Trollius-
| globeflower. Trollius . |
- Tropaeolum-
| nasturtium. Tropaeolum . |
- Tsuga-
| hemlock. Tsuga . |
- Tsusiophyllum-
| . Tsusiophyllum. |
- Tuberaria-
| . Tuberaria. |
- Tulbaghia-
| . Tulbaghia. |
- Tulipa-
| tulip. Tulipa . |
- Tweedia-
| . Tweedia. |
- Tylecodon-
| . Tylecodon. |
- Typha-
| cattail. Typha . |
-
| . |
- Top
|
|
- Uebelmannia-
| . Uebelmannia. |
- Ugni-
| . Ugni. |
- Ulex-
| gorse. Ulex . |
- Ulmus-
| elm. Ulmus . |
- Umbellularia-
| . Umbellularia. |
- Uncinia-
| . Uncinia. |
- Uniola-
| . Uniola. |
- Urceolina-
| . Urceolina. |
- Urginea-
| . Urginea. |
- Ursinia-
| . Ursinia. |
- Utricularia-
| bladderwort. Utricularia . |
- Uvularia-
| merrybells, bellwort. Uvularia . |
-
| . |
- Top
|
|
- Vaccinium-
| blueberry, cranberry, huckleberry. Vaccinium . |
- Valeriana-
| valerian. Valeriana . |
- Vallea-
| . Vallea. |
- Vancouveria-
| . Vancouveria. |
- Vanda-
| an orchid genus. Vanda . |
- Vanilla-
| . Vanilla. |
- Veitchia-
| . Veitchia. |
- Vellozia-
| . Vellozia. |
- Veltheimia-
| . Veltheimia. |
- Venidium-
| cape daisy and others. Venidium . |
- Veratrum-
| . Veratrum. |
- Verbascum-
| mullein. Verbascum . |
- Verbena-
| . Verbena. |
- Vernonia-
| ironweed. Vernonia . |
- Veronica-
| speedwell. Veronica . |
- Veronicastrum-
| . Veronicastrum. |
- Verticordia-
| . Verticordia. |
- Vestia-
| . Vestia. |
- Viburnum-
| . Viburnum. |
- Victoria-
| Giant Waterlily. Victoria . |
- Vigna-
| cowpea and various beans. Vigna . |
- Viguiera-
| . Viguiera. |
- Vinca-
| periwinkle. Vinca . |
- Viola-
| pansy, violet. Viola . |
- Virgilia-
| . Virgilia. |
- Viscaria-
| . Viscaria. |
- Vitaliana-
| . Vitaliana. |
- Vitex-
| . Vitex. |
- Vitis-
| grape. Vitis . |
- Vriesea-
| . Vriesea. |
-
| . |
- Top
|
|
- Wachendorfia-
| . Wachendorfia. |
- Wahlenbergia-
| . Wahlenbergia. |
- Waldsteinia-
| . Waldsteinia. |
- Washingtonia-
| . Washingtonia. |
- Watsonia-
| . Watsonia. |
- Weberocereus-
| . Weberocereus. |
- Wedelia-
| . Wedelia. |
- Weigela-
| . Weigela. |
- Weingartia-
| . Weingartia. |
- Weldenia-
| . Weldenia. |
- Welwitschia-
| . Welwitschia. |
- Westringia-
| . Westringia. |
- Widdringtonia-
| . Widdringtonia. |
- Wigandia-
| . Wigandia. |
- Wigginsia-
| . Wigginsia. |
- Wikstroemia-
| . Wikstroemia. |
- Wilsonaria-
| hybrid orchid genus. Wilsonaria . |
- Wisteria-
| . Wisteria. |
- Wittrockia-
| . Wittrockia. |
- Wolffia-
| . Wolffia. |
- Woodsia-
| . Woodsia. |
- Woodwardia-
| chain fern. Woodwardia . |
- Worsleya-
| . Worsleya. |
- Wulfenia-
| . Wulfenia. |
-
| . . |
- Top
|
|
- Xanthoceras-
| . Xanthoceras. |
- Xanthorhiza-
| . Xanthorhiza. |
- Xanthosoma-
| . Xanthosoma. |
- Xeranthemum-
| . Xeranthemum. |
- Xerophyllum-
| . Xerophyllum. |
- Xylosma-
| . Xylosma. |
-
| . |
- Top
|
|
- Yucca-
| . Yucca. |
- Yushania-
| . Yushania. |
- Yuugao-
| . Yuugao. |
-
| . . |
- Top
|
|
- Zaluzianskya-
| . Zaluzianskya. |
- Zamia-
| . Zamia. |
- Zantedeschia-
| calla lily. Zantedeschia . |
- Zanthoxylum-
| . Zanthoxylum. |
- Zauschneria-
| . Zauschneria. |
- Zea-
| maize. Zea . |
- Zelkova-
| . Zelkova. |
- Zenobia-
| . Zenobia. |
- Zephyranthes-
| . Zephyranthes. |
- Zigadenus-
| . Zigadenus. |
- Zinnia-
| . Zinnia. |
- Zizania-
| wild rice. Zizania . |
- Zygopetalum.
| South American Orchid Genus. Zygopetalum . |