# List of garden plants in North America

This is a partial list of garden plants, plants that can be cultivated in gardens in North America, listed alphabetically by genus.
* Top
* 0–9
* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
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* P
* Q
* R
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* W
* X
* Y
* Z

## A

* Abelia
* Abeliophyllum (white forsythia)
* Abelmoschus (okra)
* Abies (fir)
* Abroma
* Abromeitiella (obsolete)
* Abronia (sand verbena)
* Abrus
* Abutilon
* Acacia (wattle)
* Acaena
* Acalypha
* Acanthaceae
* Acanthodium
* Acantholimon
* Acanthopale
* Acanthophoenix
* Acanthus
* Acca
* Acer (maple)
* Achariaceae
* Achillea (yarrow)
* Achimenantha (hybrid genus)
* Achimenes
* Acinos (calamint)
* Aciphylla
* Acmena
* Acoelorraphe (saw palm)
* Acokanthera
* Aconitum (aconite, monkshood)
* Acorus
* Acradenia
* Acrocomia
* Actaea (baneberry)
* Actinidia (kiwifruit)
* Ada orchid genus
* Adansonia
* Adenandra
* Adenanthos
* Adenia
* Adenium
* Adenocarpus
* Adenophora
* Adenostoma
* Adiantum (maidenhair fern)
* Adlumia
* Adonis
* Adromischus
* Aechmea
* Aegopodium
* Aeonium
* Aerangis (an orchid genus)
* Aerides (an orchid genus)
* Aeschynanthus
* Aesculus
* Aethionema
* Afgekia
* Agapanthus
* Agapetes
* Agastache
* Agathis
* Agathosma
* Agave
* Ageratum
* Aglaia
* Aglaomorpha
* Aglaonema
* Agonis
* Agrimonia
* Agrostemma (corn cockle)
* Agrostis
* Aichryson
* Ailanthus (tree of heaven, etc.)
* Aiphanes
* Aira (hair grass)
* Ajania
* Ajuga (bugleweed)
* Akebia
* Alangium
* Alberta
* Albizia (silk tree)
* Albuca
* Alcea (hollyhock)
* Alchemilla
* Aldrovanda
* Aleurites
* × Aliceara (hybrid genus)
* Alisma (water plantain)
* Alkanna
* Allagoptera
* Allamanda
* Allium (onion)
* Allocasuarina
* Allosyncarpia
* Alloxylon
* Alluaudia
* Alnus (alder)
* Alocasia
* Aloe
* Aloinopsis
* Alonsoa
* Alopecurus (foxtail grass)
* Aloysia
* Alphitonia
* Alpinia (ginger lily)
* Alsobia
* Alstonia
* Alstroemeria
* Alternanthera
* Althaea
* Alyogyne
* Alyssum
* Alyxia
* Amaranthus
* Amarcrinum (hybrid genus)
* Amarygia (hybrid genus)
* Amaryllis
* Amberboa
* Amelanchier
* Amesiella
* Amherstia
* Amicia
* Ammi
* Ammobium
* Amorpha
* Amorphophallus
* Ampelopsis
* Amsonia
* Anacampseros
* Anacardium
* Anacyclus
* Anagallis (pimpernel)
* Ananas (pineapple)
* Anaphalis
* Anchusa
* Andersonia
* Andira
* Androlepis
* Andromeda
* Andropogon
* Androsace
* Anemone (windflower)
* Anemonella
* Anemonopsis
* Anemopaegma
* Anethum (dill)
* Angelica
* Angelonia
* Angiopteris
* Angophora
* Angraecum (an orchid genus)
* Anguloa (an orchid genus)
* Angulocaste (a hybrid orchid genus)
* Anigozanthos
* Anisacanthus
* Anisodontea
* Annona
* Anoda
* Anomatheca (See Freesia)
* Anopterus
* Anredera
* Antennaria
* Anthemis
* Anthericum
* Anthocleista
* Anthotroche
* Anthriscus
* Anthurium
* Anthyllis
* Antidesma
* Antigonon
* Antirrhinum (snapdragon)
* Apera
* Aphelandra
* Aphyllanthes
* Apium
* Apocynum
* Aponogeton
* Apophyllum
* Apodytes
* Aponogeton
* Aporocactus
* Aporoheliocereus (hybrid genus)
* Aprevalia
* Aptenia, synonym of Mesembryanthemum
* Aquilegia (columbine)
* Arabis (rock cress)
* Arachis
* Arachniodes
* Arachnis (scorpion orchid) (orchid genus)
* Araeococcus
* Araiostegia
* Aralia
* Araucaria (monkey-puzzle)
* Araujia
* Arbutus (madrone)
* Archidendron
* Archontophoenix (king palm)
* Arctium
* Arctostaphylos (bearberry, manzanita)
* Arctotheca
* Arctotis (African daisy)
* Ardisia
* Areca
* Arenaria (sandwort)
* Arenga
* Argemone (prickly poppy)
* Argyranthemum
* Argyreia
* Argyroderma
* Ariocarpus
* Arisaema
* Arisarum
* Aristea
* Aristolochia
* Aristotelia
* Armeria
* Armoracia
* Arnebia
* Arnica
* Aronia (chokeberry)
* Arrabidaea, see Bignonia magnifica
* Arrhenatherum (oat grass)
* Artanema
* Artabotrys
* Artemisia (mugwort, sagebrush, wormwood)
* Arthrocereus
* Arthropodium
* Artocarpus
* Arum
* Aruncus
* Arundina
* Arundinaria
* Arundo
* Asarina
* Asarum (wild ginger)
* Asclepias (milkweed, silkweed)
* × Ascocenda (hybrid genus) (an orchid genus)
* Ascocentrum an orchid genus
* Asimina
* Asparagus
* Asperula (woodruff)
* Asphodeline
* Asphodelus (asphodel)
* Aspidistra
* Asplenium
* Astelia
* Aster
* Asteranthera
* Astilbe
* Astilboides
* Astragalus (milk vetch)
* Astrantia
* Astrophytum
* Asystasia
* Atalaya
* Athamanta
* Atherosperma
* Athrotaxis
* Athyrium
* Atriplex
* Attalea
* Aubrieta
* Aucuba
* Aulax
* Auranticarpa
* Aurinia
* Austrocedrus
* Austrocylindropuntia
* Austrostipa
* Averrhoa
* Avicennia
* Azadirachta
* Azalea
* Azara
* Azolla (aquatic ferns)
* Azorella
* Azorina
* Aztekium
* Azetura

## B

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* Babiana
* Baccharis
* Backhousia
* Bacopa (water hyssop)
* Bactris
* Baeckea
* Baikiaea
* Baileya
* Ballota
* Balsamorhiza (balsam root)
* Bambusa (bamboo)
* Banksia
* Baptisia an orchid genus
* Barbarea (yellow rocket or winter cress)
* Barkeria (an orchid genus)
* Barleria
* Barklya (gold blossom tree)
* Barnadesia
* Barringtonia
* Bartlettina
* Basselinia
* Bassia
* Bauera
* Bauhinia
* Baumea
* × Beallara an orchid hybrid genus
* Beaucarnea
* Beaufortia
* Beaumontia
* Beccariella
* Bedfordia
* Begonia
* Belamcanda
* Bellevalia
* Bellis (daisy)
* Bellium
* Berberidopsis
* Berberis (barberry)
* Berchemia
* Bergenia
* Bergerocactus
* Berkheya
* Berlandiera
* Berrya
* Bertolonia
* Berzelia
* Beschorneria
* Bessera
* Beta (beet)
* Betula (birch)
* Biarum
* Bidens
* Bignonia
* Bikkia
* Billardiera
* Billbergia
* Bischofia
* Bismarckia
* Bixa
* Blandfordia
* Blechnum (hard fern)
* Bletilla (an orchid genus)
* Blighia
* Bloomeria
* Blossfeldia
* Bocconia
* Boenninghausenia
* Bolax
* Bolbitis
* Bollea (an orchid genus)
* Boltonia
* Bolusanthus
* Bomarea
* Bombax
* Bongardia
* Boophone
* Borago
* Borassodendron
* Borassus
* Boronia
* Bosea
* Bossiaea
* Bothriochloa
* Bougainvillea
* Bouteloua
* Bouvardia
* Bowenia
* Bowiea
* Bowkeria
* Boykinia
* Brabejum
* Brachychiton
* Brachyglottis
* Brachylaena
* Brachypodium
* Brachyscome
* Brachysema
* Brachystelma
* Bracteantha
* Brahea (hesper palm)
* Brassavola (an orchid genus)
* Brassaia (octopus tree)
* Brassia (an orchid genus)
* Brassica (mustard, cabbage)
* × Brassidium (hybrid orchids)
* × Brassocattleya (hybrid orchids)
* × Brassolaeliocattleya (trigeneric hybrid orchids)
* Breynia
* Brillantaisia
* Brimeura
* Briza (quaking grass)
* Brodiaea
* Bromelia
* Broughtonia an orchid genus
* Broussonetia
* Browallia
* Brownea
* Browningia
* Bruckenthalia
* Brugmansia
* Brunfelsia
* Brunia
* Brunnera
* Brunsvigia
* Brya
* Buchloe
* Buckinghamia
* Buddleja
* Buglossoides
* Bulbine
* Bulbinella
* Bulbocodium
* Bulbophyllum (an orchid genus)
* Bulnesia
* Bunchosia
* Buphthalmum
* Bupleurum
* Burchardia
* Burchellia
* × Burrageara an orchid hybrid genus
* Burretiokentia
* Bursaria
* Bursera
* Burtonia
* Butea
* Butia
* Butomus
* Buxus (boxwood)
* Byrsonima
* Bystropogon

## C

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* Cabomba
* Cadia
* Caesalpinia (dwarf poinciana, Pride of Barbados)
* Caladium
* Calamagrostis (reed grass, smallweed)
* Calamintha (calamint)
* Calamus
* Calandrinia
* Calanthe an orchid genus
* Calathea
* Calceolaria (slipperwort)
* Calendula (pot marigold)
* Calibanus
* Calibrachoa
* Calla
* Calliandra
* Callianthemum
* Callicarpa (beauty berry)
* Callicoma (black wattle)
* Callirhoe (poppy mallow)
* Callisia
* Callistemon (bottlebrush)
* Callistephus (Chinese aster)
* Callitriche (water starwort)
* Callitris (cypress pine)
* Calluna (heather)
* Calocedrus (incense cedar)
* Calochone
* Calochortus
* Calodendrum (cape chestnut)
* Calomeria
* Calophaca
* Calophyllum
* Calopyxis
* Caloscordum
* Calothamnus
* Calotropis
* Calpurnia
* Caltha (kingcup, marsh marigold)
* Calycanthus
* Calymmanthium
* Calypso (an orchid genus)
* Calytrix (starflower)
* Camassia (quamash)
* Camellia
* Camoensia
* Campanula (bellflower)
* Campsis (trumpet vine)
* Campylotropis (See Lespedeza)
* Cananga (ylang ylang)
* Canarina
* Canistrum
* Canna
* Cantua
* Capparis
* Capsicum (pepper)
* Caragana (peashrub)
* Caralluma
* Cardamine (bittercress)
* Cardiocrinum
* Cardiospermum
* Cardwellia
* Carex (sedge)
* Carissa
* Carlina
* Carludovica
* Carmichaelia
* Carnegiea (saguaro)
* Carpentaria
* Carphalea
* Carpinus (hornbeam)
* Carpobrotus
* Carthamus (safflower)
* Carum (caraway)
* Carya (hickory, pecan)
* Caryopteris
* Caryota (fishtail palm)
* Cassia (shower tree)
* Cassinia
* Cassiope
* Cassipourea
* Castanea (chestnut)
* Castanopsis
* Castanospermum (black bean)
* Casuarina (sheoak)
* Catalpa (Indian bean)
* Catananche
* Catasetum (an orchid genus)
* Catha (khat tree)
* Catharanthus (Madagascar periwinkle)
* Catopsis
* Cattleya (an orchid genus)
* Caulophyllum
* Cautleya
* Cavendishia
* Ceanothus (California-lilac)
* Cedrela (toon)
* Cedronella
* Cedrus (cedar)
* Ceiba (kapok)
* Celastrus (staff-vine)
* Celmisia (New Zealand daisy, New Zealand aster)
* Celosia (cockscomb)
* Celtis (hackberry)
* Centaurea
* Centaurium
* Centradenia
* Centranthus (valerian)
* Cephalaria
* Cephalocereus
* Cephalophyllum
* Cephalotaxus (plum-yew)
* Ceraria
* Cerastium
* Ceratonia (St. John's bread, carob bean)
* Ceratopetalum (coachwood)
* Ceratophyllum
* Ceratopteris
* Ceratostigma
* Ceratozamia
* Cerbera (sea mango)
* Cercidiphyllum
* Cercis (Judas tree, redbud)
* Cercocarpus
* Cereus
* Ceropegia
* Cestrum
* Chadsia
* Chaenomeles (flowering quince)
* Chaenorhinum (dwarf snapdragon)
* Chaerophyllum
* Chamaecyparis (false cypress)
* Chamaecytisus
* Chamaedaphne
* Chamaedorea
* Chamaelirium
* Chamaemelum (chamomile)
* Chamaerops
* Chamelaucium (wax flower)
* Chasmanthe
* Chasmanthium
* Cheilanthes
* Cheiridopsis
* Chelidonium
* Chelone (turtlehead)
* Chiastophyllum
* Chiliotrichum
* Chilopsis (desert willow)
* Chimaphila
* Chimonanthus (wintersweet)
* Chimonobambusa
* Chionanthus (fringe tree)
* Chionochloa
* Chirita
* Chlidanthus
* Choisya
* Chonemorpha (Frangipani vine)
* Choricarpia (brush turpentine)
* Chorisia (floss silk tree)
* Chorizema
* Chrysalidocarpus
* Chrysanthemoides
* Chrysanthemum
* Chrysobalanus
* Chrysogonum
* Chrysolepis
* Chrysophyllum (star apple)
* Chrysothemis
* Chusquea
* Cibotium
* Cicerbita
* Cichorium (chicory, endive)
* Cimicifuga (bugbane)
* Cinnamomum (camphor laurel)
* Cionura
* Cirsium
* Cissus
* Cistus (rock rose, sun rose)
* Citharexylum (fiddlewood)
* Citrofortunella (hybrid)
* Citrus (lime, lemon)
* Cladanthus
* Cladrastis
* Clarkia
* Claytonia
* Cleistocactus
* Clematis
* Cleome (spider flower)
* Clerodendrum
* Clethra (summersweet)
* Cleyera
* Clianthus
* Clintonia
* Clitoria
* Clivia
* Clusia
* Clytostoma
* Cobaea
* Coccoloba (sea grape)
* Coccothrinax (thatch palm)
* Cocculus
* Cochlioda an orchid genus – synonym of Oncidium
* Cochlospermum (buttercup tree, Maximiliana)
* Cocos (coconut)
* Codiaeum (croton)
* Codonanthe
* Codonopsis
* Coelia
* Coelogyne (an orchid genus)
* Coffea (coffee tree)
* Coix
* Colchicum (autumn crocus, meadow saffron)
* Coleonema
* Colletia
* Collinsia
* Collomia
* Colocasia (taro)
* Colquhounia
* Columnea
* Colutea (bladder senna)
* Coluteocarpus
* Colvillea
* Combretum
* Comesperma
* Commelina (day flower, spiderwort, widow's tears)
* Commersonia
* Commidendrum
* Commiphora
* Comptonella
* Comptonia (Sweetfern)
* Conandron
* Congea
* Conicosia
* Coniogramme
* Conoclinium (mistflower)
* Conophytum
* Conospermum
* Conostylis
* Conradina
* Consolida (larkspur)
* Convallaria (lily-of-the-valley)
* Convolvulus (bindweed, morning glory)
* Copernicia (caranda palm, wax palm)
* Copiapoa syn. Pilocopiapoa
* Coprosma
* Coptis (goldthread)
* Cordia (bird lime tree)
* Cordyline
* Coreopsis (tickseed)
* Coriandrum (coriander cilantro)
* Coriaria
* Cornus (dogwood, cornel)
* Corokia
* Coronilla
* Correa
* Corryocactus
* Cortaderia (pampas grass, tussock grass)
* Cortusa
* Corybas (helmet orchid)
* Corydalis
* Corylopsis (winter-hazel)
* Corylus (hazel, filbert)
* Corymbia
* Corynocarpus
* Corypha
* Coryphantha
* Cosmos
* Costus
* Cotinus (smoke bush)
* Cotoneaster
* Cotula (brass buttons)
* Cotyledon
* Couroupita (cannonball tree)
* Crambe
* Craspedia
* Crassula
* + Crataegomespilus (graft chimera)
* Crataegus (hawthorn)
* × Crataemespilus (hybrid)
* Crepis
* Crescentia (calabash)
* Crinodendron
* Crinum
* Crocosmia (falling stars, montbretia)
* Crocus
* Crossandra (firecracker flower)
* Crotalaria (rattlepod)
* Croton
* Crowea
* Cryptanthus (earth stars)
* Cryptbergia (hybrid)
* Cryptocarya
* Cryptocoryne (water trumpet)
* Cryptomeria (sugi, Japanese cedar)
* Cryptostegia (Indian rubber vine)
* Cryptotaenia
* Ctenanthe
* Cucumis
* Cucurbita
* Cuminum
* Cunila
* Cunninghamia (China-fir)
* Cunonia
* Cupaniopsis (tuckeroo)
* Cuphea
* Cupressus (cypress)
* Cuprocyparis (hybrid)
* Curcuma
* Cussonia
* Cyananthus (trailing bellflower)
* Cyanotis
* Cyathea (tree fern)
* Cyathodes
* Cybistax
* Cycas (cycad, sago palm)
* CyclamenPink cyclamen
* Cycnoches an orchid genus
* Cydista, synonym of Bignonia
* Cydonia (quince)
* Cylindropuntia
* Cymbalaria (ivy-leaved toadflax)
* Cymbidium (an orchid genus)
* Cymbopogon
* Cynara
* Cynodon
* Cynoglossum (hound's tongue)
* Cypella
* Cyperus
* Cyphomandra (tree tomato)
* Cyphostemma
* Cypripedium (lady's slipper; an orchid genus)
* Cyrilla
* Cyrtanthus (fire lily)
* Cyrtomium
* Cyrtostachys
* Cystopteris (bladder fern)
* Cytisus (broom)

## D

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* Daboecia
* Dacrydium
* Dactylis
* Dactylorhiza (marsh orchid)
* Dahlia
* Dalea (indigo bush)
* Dalechampia
* Damasonium
* Dampiera
* Danae
* Daphne
* Daphniphyllum
* Darlingia
* Darmera syn. Peltiphyllum
* Darwinia (lemon scented myrtle)
* Dasylirion
* Datura
* Davallia (hare's foot fern)
* Davidia
* Daviesia
* Decaisnea
* × Degarmoara (a hybrid orchid genus)
* Decarya
* Decumaria
* Deinanthe
* Delairea
* Delonix
* Delosperma
* Delphinium
* Dendranthema
* Dendrobium (an orchid genus)
* Dendrocalamus
* Dendrochilum (an orchid genus)
* Dendromecon (tree poppy)
* Denmoza
* Dennstaedtia (Hayscented fern or Cup fern)
* Deppea
* Derris
* Derwentia
* Deschampsia (hair grass)
* Desfontainia
* Desmodium
* Deuterocohnia syn. Abromeitiella
* Deutzia
* Dianella (flax lily)
* Dianthus (carnation, pink)
* Diascia (twinspur)
* Dicentra (bleeding heart)
* Dichelostemma
* Dichondra
* Dichorisandra
* Dichroa
* Dicksonia
* Dicliptera
* Dictamnus (burning bush, dittany)
* Dictyosperma (princess palm)
* Didymochlaena
* Dieffenbachia (dumb cane, mother-in-law's tongue, tuftroot)
* Dierama (African harebell, angel's fishing rod, wand flower)
* Diervilla (bush honeysuckle)
* Dietes
* Digitalis (foxglove)
* Dillenia
* Dillwynia
* Dimorphotheca (African daisy)
* Dionaea (Venus flytrap)
* Dionysia
* Dioon
* Dioscorea syns. Rajania, Tamus, Testudinaria(yam)
* Diospyros (ebony, persimmon)
* Dipcadi
* Dipelta
* Diphylleia
* Diplarrhena (butterfly flag)
* Diplazium
* Diplocyclos
* Diploglottis
* Diplolaena
* Dipsacus (teasel)
* Dipteris
* Dipteronia
* Dipteryx
* Dirca (leatherwood)
* Disa (an orchid genus)
* Disanthus
* Discaria
* Dischidia
* Discocactus
* Disocactus
* Disporopsis
* Disporum (fairy-bells)
* Dissotis
* Distictis
* Distylium
* Dizygotheca
* Docynia
* Dodecatheon (shooting stars, American cowslip), now Primula sect. Dodecatheon
* Dodonaea (hop bush)
* Dolichandrone
* Dombeya
* Doodia (hacksaw fern, rasp fern)
* Doronicum (leopard's bane)
* Dorotheanthus (ice plant, Livingstone daisy)
* Dorstenia
* Doryanthes (spear lily)
* Doryopteris
* Dovyalis
* Draba (whitlow grass)
* Dracaena
* Dracocephalum
* Dracophyllum
* Dracula (an orchid genus)
* Dracunculus
* Drimys
* Drosanthemum
* Drosera (sundew)
* Dryandra
* Dryas (mountain avens)
* Drynaria
* Dryopteris (buckler fern, shield fern, wood fern)
* Duboisia
* Duchesnea (Indian strawberry, mock strawberry)
* Dudleya
* Duranta
* Duvalia
* Dyckia
* Dymondia
* Dypsis syn. Chrysalidocarpus, Neodypsis

## E

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* Ebracteola
* Ecballium
* Eccremocarpus
* Echeveria
* Echidnopsis
* Echinacea (coneflower)
* Echinocactus
* Echinocereus
* Echinops (globe thistle)
* Echinopsis
* Echium
* Edgeworthia
* Edithcolea
* Edraianthus
* Egeria
* Ehretia
* Eichhornia (water hyacinth)
* Elaeagnus
* Elaeis (oil palm)
* Elaeocarpus
* Elatostema
* Eleocharis (spike rush)
* Elettaria
* Eleutherococcus
* Elodea (pondweed)
* Elsholtzia
* Elymus (wild rye)
* Embothrium
* Emilia (tasselflower)
* Emmenopterys
* Encelia
* Encephalartos (Kaffir bread)
* Encyclia (an orchid genus)
* Enkianthus
* Ensete
* Eomecon (snow poppy)
* Epacris
* Ephedra (ephedra)
* Epidendrum (an orchid genus)
* Epigaea
* Epilobium
* Epimedium (barrenwort)
* Epipactis (helleborine, an orchid genus)
* Epiphyllum (orchid cactus)
* Episcia (flame violet)
* Epithelantha
* Equisetum (horsetail)
* Eragrostis (love grass)
* Eranthemum
* Eranthis (winter aconite)
* Ercilla
* Eremophila (emu bush)
* Eremurus
* Erica (heath/heather)
* Erigeron (fleabane)
* Erinacea
* Erinus
* Eriobotrya
* Eriogonum
* Eriophorum (cotton grass)
* Eriophyllum
* Eriostemon (waxflower)
* Eritrichium
* Erodium
* Eryngium (eryngo, sea holly)
* Erysimum (wallflower)
* Erythrina (coral tree)
* Erythronium
* Escallonia
* Eschscholzia (California poppy)
* Escobaria
* Espostoa
* Etlingera
* Eucalyptus (gum tree, ironbark)
* Eucharis
* Eucomis
* Eucommia
* Eucryphia
* Eulophia (an orchid genus)
* Euonymus
* Eupatorium
* Euphorbia (spurge)
* Euptelea
* Eurya
* Euryale ferox
* Euryops
* Eustoma
* Evolvulus
* Exacum
* Exochorda

## F

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* 0–9
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* U
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* X
* Y
* Z
* Fabiana
* Fagus (beech)
* Fallopia
* Farfugium
* Fargesia
* Fascicularia
* × Fatshedera (hybrid genus)
* Fatsia
* Faucaria
* Felicia (blue daisy)
* Fendlera
* Fenestraria
* Ferocactus
* Ferraria
* Ferula (giant fennel)
* Festuca (fescue)
* Fibigia
* Ficus (fig)
* Ficus pumila
* Filipendula
* Firmiana
* Fittonia
* Fitzroya
* Fockea
* Foeniculum (fennel)
* Fontanesia
* Forsythia
* Fortunella (kumquat)
* Fothergilla
* Fouquieria
* Fragaria (strawberry)
* Frailea
* Francoa
* Frangipani
* Franklinia
* Fraxinus (ash)
* Freesia
* Fremontodendron
* Fritillaria (fritillary)
* Fuchsia
* Furcraea

## G

* Top
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* A
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* V
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* X
* Y
* Z
* Gagea
* Gaillardia
* Galanthus (snowdrop)
* Galax
* Galega
* Galium (bedstraw)
* Galtonia
* Gardenia
* Garrya
* Gasteria
* Gaultheria
* Gaura
* Gaylussacia (huckleberry)
* Gazania
* Geissorhiza
* Gelsemium
* Genista
* Gentiana (gentian)
* Gentianopsis
* Geranium (cranesbill, not same as Pelargonium)
* Gerbera
* Gesneria
* Geum (avens)
* Gevuina
* Gibbaeum
* Gilia
* Gillenia
* Ginkgo
* Gladiolus
* Glaucidium
* Glaucium
* Gleditsia (honey locust)
* Globba
* Globularia (globe daisy)
* Gloriosa
* Glottiphyllum
* Gloxinia
* Glyceria
* Glycyrrhiza
* Gomphocarpus
* Gomphrena
* Goniolimon
* Goodyera (jewel orchid)
* Gordonia
* Graptopetalum
* Graptophyllum
* Graptoveria (hybrid genus)
* Grevillea
* Grewia
* Greyia
* Grindelia
* Griselinia
* Gunnera (dinosaur food)
* Guzmania
* Gymnocalycium
* Gymnocarpium
* Gymnocladus
* Gynandriris
* Gynura
* Gypsophila

## H

* Top
* 0–9
* A
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* U
* V
* W
* X
* Y
* Z
* Haageocereus
* Haastia
* Habenaria (an orchid genus)
* Haberlea
* Habranthus
* Haemanthus (blood lily)
* Hakea
* Hakonechloa
* Halesia (silverbell)
* Halimiocistus (hybrid genus)
* Halimium
* Halimodendron
* Hamamelis (witch-hazel)
* Haplopappus
* Hardenbergia (coral pea)
* Harrisia
* Hatiora
* Haworthia
* Hebe
* Hechtia
* Hedera (ivy)
* Hedychium
* Hedyotis (bluets)
* Hedysarum
* Hedyscepe (umbrella palm)
* Helenium (sneezeweed)
* Helianthemum (rock rose)
* Helianthus (sunflower)
* Helichrysum
* Heliconia
* Helictotrichon
* Heliocereus
* Heliophila
* Heliopsis (ox eye)
* Heliotropium (heliotrope)
* Helleborus (hellebore)
* Heloniopsis
* Hemerocallis (daylily)
* Hemigraphis
* Hepatica
* Heptacodium
* Heracleum
* Herbertia
* Hereroa
* Hermannia
* Hermodactylus
* Hesperaloe
* Hesperantha
* Hesperis
* Hesperocallis
* Heterocentron
* Heterotheca
* Heuchera (coral flower)
* × Heucherella (hybrid genus)
* Hibbertia
* Hibiscus (rose of Sharon)
* Hieracium (hawkweed)
* Himalayacalamus
* Hippeastrum (amaryllis)
* Hippocrepis
* Hippophae
* Hohenbergia
* Hohenbergiopsis
* Hoheria
* Holboellia
* Holcus
* Holmskioldia
* Holodiscus
* Homalocladium (ribbon bush)
* Homeria
* Hoodia
* Hordeum (barley)
* Horminum
* Hosta (plantain lily)
* Hottonia
* Houttuynia
* Hovea
* Hovenia
* Howea (sentry palm)
* Hoya (wax flower)
* Huernia
* Humulus (hops)
* Hunnemannia
* Huntleya an orchid genus
* Hyacinthella
* Hyacinthoides
* Hyacinthus (hyacinth)
* Hydrangea
* Hydrastis (goldenseal)
* Hydrocharis (frogbit)
* Hydrocleys
* Hydrocotyle (pennywort)
* Hygrophila
* Hylocereus
* Hylomecon
* Hymenocallis
* Hymenosporum
* Hyophorbe (bottle palm)
* Hyoscyamus (henbane)
* Hypericum (St. John's wort, rose of Sharon)
* Hyphaene (doum palm)
* Hypocalymma
* Hypoestes
* Hypoxis (starflower)
* Hypsela
* Hyssopus (hyssop)

### I

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* U
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* W
* X
* Y
* Z
* Iberis (candytuft)
* Ibervillea
* Idesia
* Ilex (holly)
* Illicium
* Impatiens (balsam)
* Imperata
* Incarvillea
* Indigofera
* Inula
* Iochroma
* Ipheion
* Ipomoea (morning glory)
* Ipomopsis
* Iresine
* Iris
* Isatis
* Isoplexis
* Isopyrum
* Itea
* Ixia (corn lily)
* Ixiolirion
* Ixora

## J

* Top
* 0–9
* A
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* N
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* U
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* W
* X
* Y
* Z
* Jaborosa
* Jacaranda
* Jacquemontia
* Jamesia
* Jasione
* Jasminum (jasmine, jessamine)
* Jatropha
* Jeffersonia
* Jovellana
* Jovibarba
* Juanulloa
* Jubaea (Chilean wine palm)
* Juglans (walnut)
* Juncus (rush)
* Juniperus (juniper)
* Justicia

## K

* Top
* 0–9
* A
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* T
* U
* V
* W
* X
* Y
* Z
* Kadsura
* Kaempferia
* Kalanchoe
* Kalimeris
* Kalmia (mountain laurel)
* Kalmiopsis
* Kalopanax
* Kelseya
* Kerria
* Kigelia (sausage tree)
* Kirengeshoma
* Kitaibela
* Kleinia
* Knautia
* Knightia
* Kniphofia
* Koeleria (junegrass)
* Koelreuteria (golden rain tree)
* Kohleria
* Kolkwitzia (beautybush)
* Kosteletzkya
* Kunzea

## L

* Top
* 0–9
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* X
* Y
* Z
* Lablab
* Laburnocytisus
* Laburnum (laburnum)
* Laccospadix
* Lachenalia (Cape cowslip)
* Laelia (an orchid genus)
* × Laeliocattleya (hybrid orchid genus)
* Lagarosiphon
* Lagenophora
* Lagerstroemia
* Lagunaria
* Lagurus
* Lamarckia
* Lambertia
* Lamium (deadnettle)
* Lampranthus
* Lantana (shrub verbena)
* Lapageria
* Lardizabala
* Larix (larch)
* Larrea (creosote bush)
* Latania (Latan palm)
* Lathraea
* Lathyrus
* Laurelia
* Laurus
* Lavandula (lavender)
* Lavatera (mallow)
* Lawsonia
* Layia
* Ledebouria
* Ledodendron (hybrid genus)
* Ledum
* Leea
* Legousia
* Leiophyllum
* Leipoldtia
* Leitneria
* Lemboglossum
* Lenophyllum
* Leonotis
* Leontice
* Leontopodium (edelweiss)
* Lepidozamia
* Leptinella
* Lechenaultia
* Lespedeza (bush clover)
* Leucadendron
* Leucanthemella
* Leucanthemopsis
* Leucanthemum
* Leuchtenbergia
* Leucocoryne
* Leucogenes
* Leucojum (snowflake)
* Leucophyllum
* Leucophyta
* Leucopogon
* Leucoraoulia (hybrid genus)
* Leucospermum (pincushion)
* Leucothoe
* Lewisia
* Leycesteria
* Leymus
* Liatris
* Libertia
* Libocedrus
* Ligularia
* Ligustrum (privet)
* Lilium (lily)
* Limnanthes
* Limnocharis
* Limonium (sea lavender)
* Linanthus
* Linaria (toadflax)
* Lindelofia
* Lindera
* Lindheimera (star daisy)
* Linnaea (twinflower)
* Linospadix
* Linum (flax)
* Liquidambar (sweetgum)
* Liriodendron (tulip tree)
* Liriope (lilyturf)
* Lithocarpus
* Lithodora
* Lithophragma
* Lithops
* Littonia
* Livistona
* Loasa
* Lobelia
* Lobularia (sweet alyssum)
* Lodoicea (coco de mer)
* Loiseleuria
* Lomandra (mat rush)
* Lomatia
* Lomatium
* Lomatophyllum
* Lonicera (honeysuckle)
* Lopezia
* Lophomyrtus
* Lophospermum
* Lophostemon
* Loropetalum
* Lotus
* Luculia
* Ludwigia
* Luma
* Lunaria
* Lupinus (lupin)
* Luzula (woodrush)
* Lycaste (an orchid genus)
* Lychnis (campion)
* Lycium
* Lycopodium (club moss)
* Lycoris
* Lygodium (climbing fern)
* Lyonia
* Lyonothamnus
* Lysichiton (yellow skunk cabbage)
* Lysiloma
* Lysimachia
* Lythrum (loosestrife)

## M

* Top
* 0–9
* A
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* T
* U
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* W
* X
* Y
* Z
* Maackia
* Macfadyena
* Machaeranthera
* Mackaya
* Macleania
* Macleaya
* Maclura
* Macropidia
* Macrozamia
* Magnolia
* Mahonia
* Maianthemum (May lily)
* Maihuenia
* Malcolmia
* Malephora
* Malope
* Malpighia
* Malus (apple, crabapple)
* Malva (mallow)
* Malvastrum
* Malvaviscus
* Mammillaria
* Mandevilla
* Mandragora (mandrake)
* Manettia
* Manglietia
* Maranta
* Margyricarpus
* Marrubium (horehound)
* Marsilea (pepperwort)
* Masdevallia (an orchid genus)
* Matteuccia
* Matthiola (stock)
* Maurandella
* Maurandya
* Maxillaria (an orchid genus)
* Maytenus
* Mazus
* Meconopsis
* Medicago (alfalfa)
* Medinilla
* Meehania
* Megacodon
* Megaskepasma
* Melaleuca (paperbark)
* Melasphaerula
* Melastoma
* Melia
* Melianthus
* Melica (melic)
* Melicytus
* Melinis
* Meliosma
* Melissa (balm)
* Melittis (bastard balm)
* Melocactus
* Menispermum (moonseed)
* Mentha (mint)
* Mentzelia (starflower)
* Menyanthes
* Menziesia
* Merendera
* Merremia
* Mertensia
* Mespilus
* Metasequoia (dawn redwood)
* Metrosideros
* Meum
* Mexicoa
* Michauxia
* Michelia
* Microbiota
* Microcachrys
* Microlepia
* Micromeria
* Mikania
* Milium
* Milla
* Millettia
* Miltonia (an orchid genus)
* Miltoniopsis (pansy orchid)
* Mimetes
* Mimosa (mimosa, or sensitive plant)
* Mimulus (monkey flower)
* Mirabilis
* Miscanthus
* Mitchella (partridge berry)
* Mitella
* Mitraria
* Molinia
* Moltkia
* Moluccella
* Monadenium
* Monanthes
* Monarda (bee balm)
* Monardella
* Monstera
* Moraea
* Morina
* Morisia
* Morus (mulberry)
* Mucuna
* Muehlenbeckia
* Mukdenia
* Musa (banana, plantain)
* Muscari (grape hyacinth)
* Mussaenda
* Mutisia
* Myoporum
* Myosotidium
* Myosotis (forget-me-not)
* Myrica
* Myriophyllum (milfoil)
* Myrrhis (sweet cicely)
* Myrsine
* Myrteola
* Myrtillocactus
* Myrtus (myrtle)

## N

* Top
* 0–9
* A
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* U
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* X
* Y
* Z
* Nandina (heavenly bamboo)
* Narcissus (daffodil)
* Nasturtium (watercress)
* Nautilocalyx
* Nectaroscordum
* Neillia
* Nelumbo (lotus)
* Nematanthus
* Nemesia
* Nemopanthus (mountain holly)
* Nemophila
* Neobuxbaumia
* Neolitsea
* Neolloydia
* Neomarica
* Neoporteria
* Neoregelia
* Nepenthes (pitcher plant)
* Nepeta (catmint)
* Nephrolepis
* Nerine
* Nerium (oleander)
* Nertera
* Nicandra
* Nicotiana (tobacco)
* Nidularium
* Nierembergia
* Nigella
* Nipponanthemum
* Nolana
* Nomocharis
* Nopalxochia
* Nothofagus (southern beech)
* Notholirion
* Nothoscordum (false garlic)
* Notospartium
* Nuphar (spatterdock)
* Nymania
* Nymphaea (waterlily)
* Nymphoides (floating heart)
* Nyssa (tupelo)

## O

* Top
* 0–9
* A
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* M
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* O
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* R
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* T
* U
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* W
* X
* Y
* Z
* Obregonia
* Ochagavia
* Ochna
* Ocimum
* × Odontioda (hybrid orchid genus)
* × Odontocidium (hybrid orchid genus)
* Odontoglossum (an orchid genus)
* Odontonema
* × Odontonia (hybrid orchid genus)
* Oemleria
* Oenanthe (water dropwort)
* Oenothera (evening primrose, sundrops)
* Olea (olive)
* Olearia (daisy bush)
* Olneya
* Olsynium
* Omphalodes (navelwort)
* Omphalogramma
* Oncidium (an orchid genus)
* Onoclea
* Ononis (restharrow)
* Onopordum
* Onosma
* Oophytum
* Ophiopogon (lilyturf)
* Ophrys (an orchid genus)
* Oplismenus
* Opuntia (prickly pears, chollas and many other cactus species)
* Orbea
* Orbeopsis
* Orchis (an orchid genus)
* Oreocereus
* Origanum (marjoram, oregano)
* Orixa
* Ornithogalum
* Orontium (golden club)
* Orostachys
* Oroya
* Ortegocactus
* Orthophytum
* Orthrosanthus
* Orychophragmus
* Oryza (rice)
* Osbeckia
* Osmanthus
* Osmunda (royal fern)
* Osteomeles
* Osteospermum
* Ostrowskia (giant bellflower)
* Ostrya
* Othonna
* Ourisia
* Oxalis (shamrock, sorrel)
* Oxydendrum
* Oxypetalum
* Ozothamnus

## P

* Top
* 0–9
* A
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* U
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* W
* X
* Y
* Z
* Pachistima
* Pachycereus
* Pachycormus
* Pachycymbium
* Pachyphragma
* Pachyphytum
* Pachypodium
* Pachysandra
* Pachystachys
* Pachystegia
* Pachystima
* Pachyveria (hybrid genus)
* Paeonia (peony)
* Paliurus
* Pamianthe
* Panax (ginseng)
* Pancratium (sea lily)
* Pandanus (screw pine)
* Pandorea
* Panicum
* Pansy
* Papaver (poppy)
* Paphiopedilum (slipper orchid)
* Paradisea (paradise lily)
* Parahebe
* Paraquilegia
* Parkinsonia
* Parnassia
* Parochetus
* Parodia
* Paronychia
* Parrotia
* Parrotiopsis
* Parthenocissus
* Passiflora (granadilla, passionflower)
* Patersonia
* Patrinia
* Paulownia
* Paurotis
* Pavonia
* Pedilanthus
* Pediocactus
* Pelargonium (geranium)
* Pellaea
* Peltandra (arrow arum)
* Peltoboykinia
* Peltophorum
* Peniocereus
* Pennisetum
* Penstemon
* Pentachondra
* Pentaglottis
* Pentas
* Peperomia
* Peraphyllum
* Pereskia
* Perezia
* Pericallis
* Perilla
* Periploca
* Perovskia (now included in Salvia)
* Pernettya (now included in Gaultheria)
* Persea
* Persicaria (fleeceflower, knotweed)
* Petasites (butterbur, sweet coltsfoot)
* Petrea
* Petrocosmea
* Petrophile
* Petrophytum
* Petrorhagia
* Petroselinum (parsley)
* Petteria
* Petunia
* Phacelia
* Phaedranassa (queen lily)
* Phaius (an orchid genus)
* Phalaenopsis (moth orchid)
* Phalaris
* Phebalium
* Phegopteris (beech fern)
* Phellodendron (cork tree)
* Philadelphus (mock orange)
* Philageria (hybrid genus)
* Philesia
* Phillyrea
* Philodendron
* Phlebodium
* Phlomis
* Phlox
* Phoenix (date palm)
* Phormium
* Photinia
* Phragmipedium (an orchid genus)
* Phragmites (reed)
* Phuopsis
* Phygelius
* Phylica (Cape myrtle)
* × Phylliopsis (hybrid genus)
* Phyllocladus (toatoa)
* Phyllodoce
* Phyllostachys
* Phyllothamnus (hybrid genus)
* Physalis (ground cherry)
* Physaria (bladderpod)
* Physocarpus
* Physoplexis
* Physostegia
* Phyteuma
* Phytolacca (pokeweed)
* Picea (spruce)
* Picrasma
* Pieris
* Pilea
* Pileostegia
* Pilosella
* Pilosocereus
* Pimelea
* Pimpinella
* Pinanga
* Pinckneya
* Pinellia
* Pinguicula (butterwort)
* Pinus (pine)
* Piper (pepper)
* Piptanthus
* Pisonia
* Pistacia (pistachio)
* Pistia
* Pitcairnia
* Pithecellobium
* Pittosporum
* Pityrogramma
* Plantago (plantain)
* Platanus (plane tree, sycamore)
* Platycarya
* Platycerium (staghorn fern)
* Platycladus (Chinese arborvitae)
* Platycodon (balloon flower)
* Platystemon (creamcups)
* Plectranthus an orchid genus
* Pleioblastus
* Pleione (an orchid genus)
* Pleiospilos (living granite)
* Pleurothallis (an orchid genus)
* Plumeria (frangipani)
* Poa
* Podalyria
* Podocarpus
* Podophyllum (mayapple)
* Podranea
* Polemonium (jacob's ladder, abscess root)
* Polianthes
* Poliothyrsis
* Polygala (milkwort, seneca, snakeroot)
* Polygonatum
* Polygonum (knotweed, knotgrass)
* Polypodium
* Polyscias
* Polystichum
* Poncirus
* Pongamia
* Pontederia (pickerel weed)
* Populus (aspen, poplar, cottonwood)
* Porana
* Portea
* Portulaca (purslane, moss rose)
* Portulacaria
* Posoqueria
* Potamogeton
* Potentilla (cinquefoil)
* Pothos
* × Potinara (hybrid orchid genus)
* Pratia
* Primula (primrose)
* Prinsepia
* Pritchardia
* Proboscidea (unicorn plant)
* Promenaea an orchid genus
* Prosopis (mesquite)
* Prostanthera (mint bush)
* Protea
* Prumnopitys
* Prunella (self-heal)
* Prunus (almond, apricot, cherry, peach, plum)
* Pseuderanthemum
* Pseudocydonia
* Pseudolarix (golden-larch)
* Pseudopanax
* Pseudosasa
* Pseudotsuga (douglas-fir)
* Pseudowintera
* Psilotum
* Psychopsis (butterfly orchid)
* Psylliostachys (statice)
* Ptelea
* Pteris (brake, table fern)
* Pterocactus
* Pterocarya (wingnut)
* Pteroceltis
* Pterocephalus
* Pterodiscus
* Pterostyrax
* Ptilotus
* Ptychosperma
* Pueraria
* Pulmonaria (lungwort)
* Pulsatilla
* Pultenaea
* Punica (pomegranate)
* Purshia
* Puschkinia
* Putoria
* Puya
* Pycnanthemum
* Pycnostachys
* Pyracantha (firethorn)
* Pyrola (wintergreen)
* Pyrostegia
* Pyrrosia
* Pyrus (pear)

## Q

* Top
* 0–9
* A
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* X
* Y
* Z
* Quamoclit
* Quaqua
* Quercus (oak)
* Quesnelia
* Quisqualis
* Quince

## R

* Top
* 0–9
* A
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* X
* Y
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* Ramonda
* Ranunculus (buttercup, crowfoot)
* Ranzania
* Raoulia
* Raphia (raffia)
* Ratibida
* Ravenala (traveler's tree)
* Rebutia
* Rehderodendron
* Rehmannia
* Reineckea
* Reinwardtia
* Reseda (Mignonette)
* Retama
* Rhamnus
* Rhaphidophora
* Rhaphiolepis
* Rhapidophyllum (needle palm)
* Rhapis (lady palm)
* Rheum (rhubarb)
* Rhexia
* Rhipsalis
* Rhodanthe (strawflower)
* Rhodanthemum
* Rhodiola
* Rhodochiton
* Rhododendron
* Rhodohypoxis
* Rhodophiala
* Rhodothamnus
* Rhodotypos
* Rhoeo
* Rhoicissus
* Rhombophyllum
* Rhus (sumac)
* Rhynchelytrum
* Rhynchostylis (an orchid genus)
* Ribes (currant)
* Richea
* Ricinus (castor-oil plant)
* Rigidella
* Robinia
* Rodgersia
* Rodriguezia an orchid genus
* Rohdea
* Romanzoffia
* Romneya (Matilija poppy, tree poppy)
* Romulea
* Rondeletia
* Rosa (rose)
* Roscoea
* Rosmarinus (rosemary)
* Rossioglossum an orchid genus
* Rothmannia
* Roystonea (royal palm)
* Rubus (raspberry)
* Rudbeckia (coneflower)
* Ruellia
* Rumex (dock)
* Rumohra
* Rupicapnos
* Ruschia
* Ruscus
* Russelia
* Ruta (rue)

## S

* Top
* 0–9
* A
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* X
* Y
* Z
* Sabal (palmetto)
* Saccharum (plume grass, sugar cane)
* Sadleria
* Sagina (pearlwort)
* Sagittaria (arrowhead)
* Salix (willow)
* Salpiglossis
* Salvia (sage)
* Salvinia
* Sambucus (elder)
* Sanchezia
* Sandersonia
* Sanguinaria (bloodroot)
* Sanguisorba (burnet)
* Sanicula
* Sansevieria
* Santolina
* Sanvitalia (creeping zinnia)
* Sapindus
* Sapium (tallow tree)
* Saponaria (soapwort)
* Sarcocapnos
* Sarcocaulon
* Sarcococca
* Saritaea, see Bignonia magnifica
* Sarmienta
* Sarracenia (pitcher plant)
* Sasa
* Sassafras
* Satureja (savory)
* Sauromatum
* Saxegothaea
* Saxifraga (saxifrage)
* Scabiosa (scabious plant)
* Scadoxus (blood lily)
* Scaevola
* Schefflera
* Schima
* Schinus
* Schisandra
* Schizachyrium
* Schizanthus
* Schizopetalon
* Schizophragma
* Schizostylis
* Schlumbergera
* Schoenoplectus
* Schomburgkia an orchid genus
* Schotia
* Schwantesia
* Sciadopitys
* Scilla (including the former genus Chionodoxa)
* Scindapsus
* Scirpoides
* Sclerocactus
* Scoliopus
* Scopolia
* Scrophularia (figwort)
* Scutellaria
* Securinega
* Sedum (stonecrop)
* Selaginella
* Selago
* Selenicereus
* Selinum
* Semele
* Semiaquilegia
* Semiarundinaria
* Sempervivum (hens and chicks)
* Senecio (ragwort)
* Senna
* Sequoia (coast redwood)
* Sequoiadendron (giant sequoia)
* Seriphidium
* Serissa
* Serruria
* Sesbania
* Sesleria
* Setaria
* Shepherdia
* Shibataea
* Shortia
* Sibiraea
* Sidalcea
* Sideritis
* Silene (campion)
* Silphium
* Silybum
* Simmondsia (jojoba)
* Sinningia
* Sinofranchetia
* Sinojackia
* Sinowilsonia
* Sisyrinchium
* Skimmia
* Smilacina
* Smilax
* Smithiantha
* Smyrnium
* Sobralia an orchid genus
* Solandra
* Solanum (potato, nightshade)
* Soldanella (snowbell)
* Soleirolia
* Solenopsis
* Solenostemon
* Solidago (goldenrod)
* Solidaster (supposedly hybrid genus; see Solidago)
* Sollya
* Sonerila
* Sophora
* × Sophrolaeliocattleya (trigeneric hybrid orchid)
* Sophronitis (an orchid genus)
* Sorbaria
* Sorbus (rowan, whitebeam)
* Sorghastrum
* Sparaxis
* Sparganium (bur-reed)
* Sparrmannia
* Spartina (cord grass)
* Spartium (broom)
* Spathiphyllum
* Spathodea
* Sphaeralcea
* Spigelia
* Spiraea (spirea)
* Sprianthes (an orchid genus)
* Sporobolus
* Sprekelia
* Stachys (betony)
* Stachyurus
* Stangeria
* Stanhopea (an orchid genus)
* Stapelia
* Stapelianthus
* Staphylea (bladdernut)
* Stauntonia
* Stenanthium
* Stenocactus
* Stenocarpus
* Stenocereus
* Stenomesson
* Stenotaphrum
* Stenotus
* Stephanandra
* Stephanocereus
* Stephanotis
* Sternbergia
* Stigmaphyllon
* Stipa
* Stokesia
* Stomatium
* Stratiotes
* Strelitzia (bird of paradise)
* Streptocarpus (Cape primrose)
* Streptosolen
* Strobilanthes
* Stromanthe
* Strombocactus
* Strongylodon
* Stuartia
* Stylidium
* Stylophorum
* Styphelia
* Styrax
* Succisa
* Sulcorebutia
* Sutera
* Sutherlandia
* Swainsona
* Swainsonia
* Syagrus
* Sycoparrotia (hybrid genus)
* Sycopsis
* Symphoricarpos (snowberry)
* Symphyandra
* Symphytum (comfrey)
* Symplocos
* Synadenium
* Syneilesis
* Syngonium
* Synthyris
* Syringa (lilac)
* Syzygium (rose apple)

## T

* Top
* 0–9
* A
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* X
* Y
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* Tabebuia
* Tabernaemontana
* Tacca
* Tagetes (Mexican or French marigold)
* Talinum (fameflower)
* Tamarix (tamarisk)
* Tanacetum (tansy)
* Tanakaea
* Tapeinochilos
* Taxodium (bald cypress)
* Taxus (yew)
* Tecoma
* Tecomanthe
* Tecomaria
* Tecophilaea
* Telekia
* Telephium
* Tellima
* Telopea (waratah)
* Templetonia
* Terminalia
* Ternstroemia
* Tetracentron
* Tetradium (bee tree)
* Tetranema
* Tetraneuris
* Tetrapanax
* Tetrastigma
* Tetratheca
* Teucrium
* Thalia
* Thalictrum
* Thelesperma
* Thelocactus
* Thelypteris
* Thermopsis
* Thespesia
* Thevetia
* Thlaspi
* Thrinax (thatch palm)
* Thryptomene (heath myrtle)
* Thuja (thuja, arborvitae)
* Thujopsis (hiba)
* Thunbergia
* Thymophylla
* Thymus (thyme)
* Tiarella
* Tibouchina
* Tigridia
* Tilia (linden)
* Tillandsia (air plant, Spanish moss)
* Tipuana
* Titanopsis
* Tithonia (Mexican sunflower)
* Todea
* Tolmiea
* Tolpis
* Toona
* Torenia
* Torreya (nutmeg yew)
* Tovara
* Townsendia
* Trachelium
** Trachelium caeruleum (blue throatwort)
* Trachelospermum
* Trachycarpus (chusan palm)
* Trachymene
* Tradescantia (spiderwort)
* Trapa (water caltrop)
* Trichodiadema
* Trichosanthes
* Tricyrtis (toad lily)
* Trientalis
* Trifolium (clover)
* Trillium
* Tripetaleia
* Tripterygium
* Triteleia (triplet lily)
* Tritonia
* Trochodendron
* Trollius (globeflower)
* Tropaeolum (nasturtium)
* Tsuga (hemlock)
* Tsusiophyllum
* Tuberaria
* Tulbaghia
* Tulipa (tulip)
* Tweedia
* Tylecodon
* Typha (cattail)

## U

* Top
* 0–9
* A
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* X
* Y
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* Uebelmannia
* Ugni
* Ulex (gorse)
* Ulmus (elm)
* Umbellularia
* Uncinia
* Uniola
* Urceolina
* Urginea
* Ursinia
* Utricularia (bladderwort)
* Uvularia (merrybells, bellwort)

## V

* Top
* 0–9
* A
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* G
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* M
* N
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* X
* Y
* Z
* Valeriana (garden valerian)
* Vallea
* Vancouveria
* Vanda (an orchid genus)
* Vanilla an orchid genus
* Veitchia
* Vellozia
* Veltheimia
* Veratrum
* Verbascum (mullein)
* Verbena
* Vernonia (ironweed)
* Veronica (speedwell)
* Veronicastrum
* Verticordia
* Vestia
* Viburnum
* Victoria (giant waterlily)
* Vigna (cowpea and various beans)
* Viguiera
* Vinca (periwinkle)
* Viola (pansy, violet)
* Virgilia
* Viscaria
* Vitaliana
* Vitex
* Vitis (grape)
* Vriesea

## W

* Top
* 0–9
* A
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* M
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* X
* Y
* Z
* Wachendorfia
* Wahlenbergia
* Waldsteinia
* Washingtonia
* Watsonia
* Weberocereus
* Wedelia
* Weigela
* Weingartia
* Weldenia
* Welwitschia
* Westringia
* Widdringtonia
* Wigandia
* Wigginsia
* Wikstroemia
* Wilsonaria (hybrid orchid genus)
* Wisteria
* Wittrockia
* Wolffia
* Woodsia
* Woodwardia (chain fern)
* Worsleya
* Wulfenia

## X

* Top
* 0–9
* A
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* H
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* M
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* X
* Y
* Z
* Xanthoceras
* Xanthorhiza
* Xanthosoma
* Xeranthemum
* Xerophyllum
* Xylosma

## Y

* Top
* 0–9
* A
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* X
* Y
* Z
* Yucca
* Yushania

## Z

* Top
* 0–9
* A
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* M
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* X
* Y
* Z
* Zaluzianskya
* Zamia
* Zamioculcas
* Zantedeschia (calla lily)
* Zanthoxylum
* Zauschneria
* Zea (maize)
* Zelkova
* Zenobia
* Zephyranthes
* Zigadenus
* Zinnia
* Zizania (wild rice)
* Zygopetalum (an orchid genus)