See also: List of plant names
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A Abelia Abeliophyllum (white forsythia) Abelmoschus (okra) Abies (fir) Abromeitiella Abronia (sand verbena) Abutilon Acacia (mimosa, wattle) Acaena Acalypha Acantholimon Acanthophoenix Acanthus Acca Acer (maple) Achillea (yarrow) Achimenantha (hybrid genus) Achimenes Acinos (calamint) Aciphylla Acmena Acoelorraphe (saw palm) Acokanthera Aconitum (aconite, monkshood) Acorus Acrocomia Actaea (baneberry) Actinidia (kiwifruit) Ada Adansonia Adenia Adenium Adenocarpus Adenophora Adenostoma Adiantum (maidenhair fern) Adlumia Adonis Adromischus Aechmea Aegopodium Aeonium Aerangis Aerides Aeschynanthus Aesculus Aethionema Agapanthus Agapetes Agastache Agathis Agave Ageratum Aglaonema Agonis Agrostemma (corn cockle) Agrostis Aichryson Ailanthus\ Aiphanes Aira (hair grass) Ajania Ajuga (bugleweed) Akebia Alangium Albizia Albuca Alcea (hollyhock) Alchemilla Aleurites Aliceara (hybrid genus) Alisma (water plantain) Alkanna Allamanda Allium (onion) Alluaudia Alnus (alder) Alocasia Aloe Aloinopsis Alopecurus (foxtail grass) Aloysia Alpinia (ginger lily) Alsobia Alstroemeria Alternanthera Althaea Alyogyne Alyssum Amaranthus Amarcrinum (hybrid genus) Amarygia (hybrid genus) Amaryllis Amberboa Amelanchier Amesiella Amherstia Amicia Ammi Ammobium Amorpha Amorphophallus Ampelopsis Amsonia Anacampseros Anacyclus Anagallis (pimpernel) Ananas (pineapple) Anaphalis Anchusa Andromeda Andropogon Androsace Anemone (windflower) Anemonella Anemonopsis Anemopaegma Anethum (dill) Angelica Angelonia Angophora Angraecum Anguloa Angulocaste (hybrid genus) Anigozanthos Anicacanthus Anisodontea Anoda Anomatheca Anopterus Anredera Antennaria Anthemis Anthericum Anthriscus Anthurium Anthyllis Antigonon Antirrhinum (snapdragon) Aphelandra Aphyllanthes Aponogeton Aporocactus Aporoheliocereus (hybrid genus) Aptenia Aquilegia (columbine) Arabis (rock cress) Arachnis (scorpion orchid) Araeococcus Aralia Araucaria (monkey-puzzle tree) Araujia Arbutus (madrone) Archontophoenix (king palm) Arctostaphylos (bearberry, manzanita) Arctotheca Arctotis (African daisy) Ardisia Areca Arenaria (sandwort) Arenga Argemone (prickly poppy) Argyranthemum Argyreia Argyroderma Ariocarpus Arisaema Arisarum Aristea Aristolochia Armoracia Arnebia Arnica Aronia (chokeberry) Arrabidaea Arrhenatherum (oat grass) Artemisia (mugwort, sagebrush, wormwood) Arthropodium Arum Aruncus Arundinaria Arundo Asarina Asarum Asclepias (milkweed, silkweed) Ascocenda (hybrid genus) Asimina Asparagus Asperula (woodruff) Asphodeline Asphodelus (asphodel) Aspidistra Asplenium Astelia Aster Asteranthera Astilbe Astilboides Astragalus (milk vetch) Astrantia Astrophytum Atherosperma Athrotaxis Athyrium Atriplex Aubrieta Aucuba Aurinia Austrocedrus Azara Azolla Azorella Azorina Aztekium B Babiana Baccharis Backhousia Backopa (water hyssop) Baeckea Ballota Balsamorhiza (balsam root) Bambusa (bamboo) Banksia Baptisia Barbarea Barkeria Barleria Bassia Bauera Bauhinia Beaucarnea Beaufortia Beaumontia Begonia Belancanda Bellevalia Bellis (daisy) Bellium Berberidopsis Berberis (barberry) Berchemia Bergenia Bergerocactus Berkheya Berlandiera Bertolonia Beschorneria Bessera Beta (beet) Betula (birch) Biarum Bidens Bignonia Billardiera Billbergia Bixa Blandfordia Blechnum (hard fern) Bletilla Bloomeria Blossfeldia Boenninghausenia Bolax Bolbitis Bollea Boltonia Bolusanthus Bomarea Bombax Bongardia Borago Borassus Boronia Bothriochloa Bougainvillea Bouteloua Bouvardia Bowenia Bowiea Brachychiton Brachyglottis Brachyscome Brachysema Brachystelma Bracteantha Brahea (Hesper palm) Brassavola Brassia Brassica (mustard, cabbage) Brassocattleya (hybrid orchids) Brassolaeliocattleya (trigeneric hybrid orchids) Breynia Briggsia Brimeura Briza (quaking grass) Brodiaea Bromelia Broughtonia Broussonetia Browallia Brownea Browningia Bruckenthalia Brugmansia Brunfelsia Brunnera Brunsvigia Buddleja Buglossoides Bulbine Bulbinella Bulbocodium Bulbophyllum Buphthalmum Bupleurum Burchardia Burchellia Bursera Butea Butia Butomus Buxus (boxwood) C Cabomba Caesalpina Caladium Calamagrostis (reed grass, smallweed) Calamintha (calamint) '\'Calamus'' Calandrinia Calanthe Calathea Calceolaria (slipperwort) Calendula Calibanus Calla Calliandra Callianthemum Callicarpa (beautyberry) Callirhoe (poppy mallow) Callisia Callistemon (bottlebrush) Callistephus (Chinese aster) Callitriche (water starwort) Calltris Calluna (heather) Calocedrus (incense cedar) Calochone Calochortus Calomeria Caloscordum Calothamnus Calpurnia Caltha (kingcup, marsh marigold) Calycanthus Calymmanthium Calypso Calytrix (starflower) Camassia (quamash) Camellia Campanula (bellflower) Campsis (trumpet vine) Campylotropsis Canarina Canistrum Canna Cantua Capsicum (pepper) Caragana (peashrub) Caralluma Cardamine (bittercress) Cardiocrinum Cardiospermum Carex (sedge) Carissa Carlina Carludovica Carmichaelia Carnegiea (saguaro) Carpentaria Carpenteria Carpinus (hornbeam) Carpobrotus Carthamus (safflower) Carum (caraway) Carya (hickory, pecan) Caryopteris Caryota (fishtail palm) Cassia Cassinia Cassiope Castanea (chestnut) Castanopsis Castanospermum Casuarina Catalpa Catananche Catasetum Catharanthus Catopsis Cattleya Caulophyllum Cautleya Cavendishia Ceanothus (Calfornia lilac) Cedronella Cedrus (cedar) Ceiba Celastrus (bittersweet) Celmisia (New Zealand daisy) Celosia (cockscomb) Celtis (hackberry) Centaurea Centaurium Centradenia Centranthus (valerian) Cephalaria Cephalocereus Cephalophyllum Cephalotaxus (plum yew) Ceraria Cerastium Ceratopetalum Ceratophyllum Ceratopteris Ceratostigma Ceratozamia Cercidiphyllum Cercis Cercocarpus Cereus Ceropegia Cestrum Chaenomeles (flowering quince) Chaenorhinum (dwarf snapdragon) Chaerophyllum Chamaecyparis (false cypress) Chamaecytisus Chamaedaphne Chamaedorea Chamaelirium Chamaemelum (chamomile) Chamaerops Chamelaucium Chasmanthe Chasmanthium Cheilanthes Cheiridopsis Chelidonium Chelone (turtlehead) ''Chiastophyllum'\' Chiliotrichum Chilopsis (desert willow) Chimaphila Chimonanthus (wintersweet) Chimonobambusa Chionanthus (fringe tree) Chionochloa Chionodoxa (glory of the snow) Chionoscilla (hybrid genus) Chirita Chlidanthus Choisya Chorisia Chorizema Chrysalidocarpus Chrysanthemum Chrysogonum Chrysolepis Chrysosplenium Chrysothemis Chusquea Cibotium Cicerbita Cichorium (chicory, endive) Cimicifuga (bugbane) Cinnamomum Cionura Cirsium Cissus Cistus (rock rose, sun rose) Citrofortunella (hybrid genus) 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 Cocos (coconut) Codiaeum (croton) Codonanthe Codonopsis Coelia Coelogyne Coix Colchicum (autumn crocus, meadow saffron) Coleonema Colletia Collinsia Collomia Colocasia (taro) Colquhounia Columnea Colutea (bladder senna) Coluteocarpus Colvillea Combretum Commelina (day flower, spiderwort) Comptonia Conandron Congea Conicosia Coniogramme Conophytum Consolida (larkspur) Convallaria (lily-of-the-valley) Convolvulus (bindweed, morning glory) Copernicia (wax palm) Copiapoa Coprosma Coptis (goldthread) Cordia Cordyline Coreopsis (tickseed) Coriandrum (coriander [cilantro]) Coriaria Cornus (dogwood) Corokia Coronilla Correa Corryocactus Cortaderia (pampas grass, tussock grass) Cortusa Corydalis Corylopsis (winter hazel) Corylus (filbert, hazel) Corynocarpus Corypha Coryphantha Cosmos Costus Cotinus (smoke tree) Cotoneaster Cotula Cotyledon Crambe Craspedia Crassula Crataegus (hawthorn) Crepis Crinodendron Crinum Crocosmia Crocus Crossandra Crotalaria (rattlebox) Crowea Cryptanthus Cryptbergia (hybrid genus) Cryptocoryne (water trumpet) Cryptomeria (Japanese cedar) Ctenanthe Cunila Cunninghamia (China fir) Cunonia Cuphea Cupressocyparis (hybrid genus) Cupressus (cypress) Curcuma Cyananthus Cyanotis Cyathea (tree fern) Cyathodes Cybistax Cycas (fern palm, sago palm) Cyclamen Cycnoches Cydonia (quince) Cymbalaria Cymbidium Cymbopogon Cynara Cynoglossum Cypella Cyperus Cyphomandra (tree tomato) Cyphostemma Cypripedium Cyrilla Cyrtanthus Cyrtomium Cyrtostachys Cystopteris (bladder fern) Cytisus D Daboecia Dacrydium Dactylis Dactylorhiza (marsh orchid) Dahlia Dais Dalea (indigo bush) Damasonium Dampiera Danae Daphne Daphniphyllum Darmera Darwinia (scent myrtle) Dasylirion Davallia Davidia Decaisnea Decarya Decumaria Deinanthe Delonix Delosperma Delphinium Dendranthema Dendrobium Dendrocalamus Dendrochilum Dendromecon (tree poppy) Denmoza Dennstaedtia Deschampsia (hair grass) Desfontainia Desmodium Deutzia Dianella (flax lily) Dianthus (carnation, pink) Diascia Dichelostemma Dichondra Dichorisandra Dicksonia Dicliptera Dictamnus Dictyosperma (princess palm) Didymochlaena Dieffenbachia Dierama Diervilla (bush honeysuckle) Dietes Digitalis (foxglove) Dillenia Dillwynia Dimorphotheca (African daisy) Dionaea (Venus flytrap) Dionysia Dioon Dioscorea (sweet potato) Diospyros Dipcadi Dipelta Diphylleia Diplarrhena Diplazium Diplocyclos Dipsacus (teasel) Dipteronia Dirca Disa Disanthus Discaria Dischidia Discocactus Disocactus Disporopsis Disporum (fairy bells) Distictis Distylium Docynia Dodecatheon (shooting stars) Dodonaea Dombeya Doodia Doronicum Dorotheanthus (ice plant) Dorstenia Doryanthes (spear lily) Doryopteris Draba Dracaena Dracocephalum Dracula Dracununculus Dregea Drimys Drosanthemum Drosera (sundew) Dryandra Dryas Drynaria Dryopteris (buckler fern) Duchesnea Dudleya Duranta Duvalia Dyckia E 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 (tassel flower) Emmenopterys Encelia Encephalartos (Kaffir bread) Encyclia Enkianthus Ensete Eomecon (snow poppy) Epacris Ephedra (joint fir) Epidendrum Epigaea Epilobium Epimedium (barrenwort) Epipactis (helleborine) 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, ironbark) Eucharis Eucomis Eucommia Eucryphia Eulophia Euonymus Eupatorium Euphorbia (milkweed, spurge) Euptelea Eurya Euryale Euryops Eustoma Evolvulus Exacum Exochorda F Fabiana Fagus (beech) Fallopia Farfugium Fargesia Fascicularia Fatshederae (hybrid genus) Fatsia Faucaria Felicia (blue daisy) Fendlera Fenestraria Ferocactus Ferraria Ferula (giant fennel) Festuca (fescue) Fibigia Ficus (fig) Filipendula Firmiana Fittonia Fitzroya Fockea Foeniculum (fennel) Fontanesia Forsythia Fortunella (kumquat) Fothergilla Fouquieria Fragaria (strawberry) Frailea Francoa Franklinia Fraxinus (ash) Freesia Fremontodendron Fritillaria (fritillary) Fuchsia Furcraea G Gagea Gaillardia Galanthus (snowdrop) Galax (wandflower) 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 Griselina Gunnera (dinosaur food) Guzmania Gymnocalycium Gymnocarpium Gymnocladus Gynandriris Gynura Gypsophila H Haageocereus Haastia Habenaria Haberlea Habranthus Hacquetia 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 '\'Hieracium'' (hawkweed) Himalayacalamus Hippeastrum (amaryllis) Hippocrepis Hippophae Hohenbergia Hohenbergiopsis Hoheria Holboellia Holcus Holmskioldia Holodiscus Homalocladium (ribbon bush) Homeria Hoodia Hordeum (barley) Horminium Hosta (plantain lily) Hottonia Houttuynia Hovea Hovenia Howea (sentry palm) Hoya (wax flower) Huernia Humulus (hops) Hummemannia Huntleya Hyacinthella Hyacinthoides Hyacinthus (hyacinth) Hydrastis (goldenseal) Hydrocharis (frogbit) Hydrocleys Hydrocotyle (pennywort) Hygrophila Hylocereus Hylomecon Hymenocallis Hymenosporum Hyophorbe (bottle palm) Hyoscyamus (henbane) Hypericum (St. John's wort) Hyphaene (doum palm) Hypocalymma Hypoestes Hypoxis (starflower) Hypsela Hyssopus (hyssop) I 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 Jaborosa Jacaranda Jacquemontia Jamesia Jancaea Jasione Jasminum (jasmine, jessamine) Jatropha Jeffersonia Jovellana Jovibarba Juanulloa Jubaea (Chilean wine palm) Juglans (walnut) Juncus (rush) Juniperus (juniper) Justicia K Kadsura Kaempferia Kalanchoe Kalimeris Kalmia Kalmiopsis Kalopanax Kelseya Kerria Kigellia (sausage tree) Kirengeshoma Kitaibela Kleinia Knautia Knightia Kniphofia Koeleria Koelreuteria Kohleria Kolkwitzia (beautybush) Kosteletzkya Kunzea L Lablab Laburnocytisus Laburnum Laccospadix Lachenalia (Cape cowslip) Laelia Laeliocattleya (hybrid orchid genus) Lagarosiphon Legenophora Lagerstroemia Lagunaria Lagurus Lamarckia Lambertia Lamium (deadnettle) Lampranthus Lantana (shrub verbena) Lapageria Lardizabala Larix (larch) Larrea (creosote bush) Latania (Latan palm) Lathraea Lathryus 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 Leptodactylon Leschenaultia 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 Lindheimeria (star daisy) Linnaea (twinflower) Linospadix Linum (flax) Liquidambar (sweetgum) Liriodendron (tulip tree) Liriope (lilyturf) Lithocarpus Lithodora Lithophragma Lithops Littonia Livistona Lloydia 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 (lupine) Luzula (woodrush) Lycaste Lychnis (campion) Lycium Lycopodium (club moss) Lycoris Lygodium (climbing fern) Lyonia Lyonothamnus Lycichiton (skunk cabbage) Lysiloma Lysimachia (loosestrife) Lythrum M 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 Matteuccia Matthiola (stock) Maurandella Maurandya Maxillaria Maytenus Mazus Meconopsis Medicago (alfalfa) Medinilla Meehania Megacodon Megaskepasma Melaleuca (paperbark) Melasphaerula Melastoma Melia Melianthus Melica (melick) Melicytus Melinis Meliosma Melissa (balm) Melittis (bastard balm) Melocactus Menispermum (moonseed) Mentha (mint) Mentzelia (starflower) Menyanthes Menziesia Merendera Merremia Mertensia Mespilus Metasquoia Metrosideros Meum Mexicoa Michauxia Michelia Microbiota Microcachrys Microlepia Micromeria Mikania Milium Milla Millettia Miltonia 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 Nandina (heavenly bamboo) Narcissus (daffodil) Nautilocalyx Nectaroscordium Neillia Nelumbo (lotus) Nematanthus Nemesia Nemopanthus (mountain holly) Nemophila Neobuxbaumia Neolitsea Neolloydia Neomarica Neoporteria Neoregelia Nepenthes (pitcher plant) Nepeta (catmint) Nephrolepsis 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 Obregonia Ochagavia Ochna Ocimum Odontioda (hybrid orchid genus) Odontocidium (hybrid orchid genus) Odontoglossum Odontonema Odontonia (hybrid orchid genus) Oemleria Oenanthe (waterdropwort) Oenothera (evening primrose, sundrops) Olea (olive) Olearia (daisy bush) Olneya Olsynium Omphalodes (navelwort) Omphalogramma Oncidium Onoclea Ononis (restharrow) Onopordum Onosma Oophytum Ophiopogon (lilyturf) Ophrys Ophthalmophyllum Oplismenus Opuntia (peyote and many other cactus species) Orbea Orbeopsis Orchis Oreocereus Origanum (marjoram, oregano) Orixa Ornithogalum Ornithophora Orontium (golden club) Orostachys Oroya Ortegocactus Orthophytum Orthrosanthus Orychophragmus Oryza (rice) Osbeckia Osmanthus Osmarea Osmaronia Osmunda (royal fern) Osteomeles Osteospermum Ostrowskia (giant bellflower) Ostrya Othonna Ourisia Oxalis (shamrock, sorrel) Oxydendrum Ozothamnus P 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 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 Paxistima Pedilanthus Pediocactus Pelargonium (geranium) Pellaea Peltandra (arrow arum) Peltoboykinia Peltophorum Peniocereus Pennisetum Penstemon Pentachrondra Pentaglottis Pentas Peperomia Peraphyllum Pereskia Perezia Pericallis Perilla Periploca Perovskia Pernettya Persea Persicaria (fleeceflower, knotweed) Petasites (butterbur, sweet coltsfoot) Petrea Petrocosmea Petrophile Petrophyton Petrophytum Petrorhagia Petroselinum (parsley) Petteria Petunia Phacelia Phaedranassa (queen lily) Phaius 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 Phragmites (reed) Phuopsis Phygelius Phylica (Cape myrtle) Phylliopsis (hybrid genus) Phyllocladus (celery pine) Phyllodoce Phyllostachys Phyllothamnus (hybrid genus) Physalis (ground cherry) Physaria (bladderpod) Physocarpus Physoplexis Physostegia Phyteuma Phytolacca (pokeweed) Picea (spruce) Picrasma Pieris Pilea Pileostegia Pileosella 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) Platycodon (balloon flower) Platystemon (creamcups) Plectranthus Pleioblastus Pleione Pleiospilos (living granite) Pleurothallis Plumeria (frangipani) Poa Podalyria Podocarpus Podophyllum (mayapple) Podranea Polemonium (abscess root) Polianthes Poliothyrsis Polygala (milkwort, seneca, snakeroot) Polygonatum Polygonum (buckwheat) Polypodium Polyscias Polystichum Poncirus Pongamia Pontederia (pickerel weed) Populus (aspen, cottonwood, poplar) 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 Prosopis (mesquite) Prostanthera (mint bush) Protea Prumnopitys Prunella (selfheal) Prunus (almond, apricot, cherry, peach, plum) Pseuderanthemum Pseudocydonia Pseudolarix Pseudopanax Pseudosasa Pseudotsuga Pseudowintera Psiolotum Psychopsis (butterfly orchid) Psylliostachys (statice) Ptelea Pteris (brake, table fern) Pterocactus Pterocarya (wingnut) Pteroceltis Pterocephalus Pterodiscus Pteropogon 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 Quamoclit Quaqua Quercus (oak) Quesnelia Quisqualis R Ramonda Ranunculus (buttercup, crowfoot) Ranzania Raoulia Raphia (raffia) Ratibida Ravenala (traveler's tree) Rebutia Rehderodendron Rehmannia Reineckia Reinwardtia Reseda (mignonette) Retama Rhamnus Rhaphidophora Rhaphiolepsis 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 Ribes (currant) Richea Ricinus Rigidella Robinia Rochea Rodgersia Rodriguezia Rohdea Romanzoffia Romneya Romulea Rondeletia Rosa (rose) Roscoea Rosmarinus (rosemary) Rossioglossum Rothmannia Roystonea (royal palm) Rubus (raspberry) Rudbeckia (coneflower) Ruellia Rumex (dock) Rumohra Rupicapnos Ruschia Ruscus Russelia Ruta (rue) S Sabal (palmetto) Sabina Saccharum (plume grass, sugar cane) Sadleria Sagina (pearlwort) Sagittaria (arrowhead) Saintpaulia (African violet) Salix (willow) Salpiglossus Salvia (sage) Salvinia Sambuccus (elder) Sanchezia Sandersonia Sanguineria (bloodroot) Sanguisorba (burnet) Sanservieria Santolina Sanvitalia (creeping zinnia) Sapindus Sapium (tallow tree) Saponaria (soapwort) Sarcocapnos Sarcocaulon Sarcococca Saritaea Sarmienta Sarracenia (pitcher plant) Sasa Sassafras Satureja (savory) Sauromatum Saxegoothaea Saxifraga (saxifrage) Scabiosa (scabious plant) Scadoxus (blood lily) Scaevola Schefflera Schima Schinus Schizachyrium Schizandra Schizanthus Schizopetalon Schizophragma Schizostylis Schlumbergera Schoenoplectus Schomburgkia Schotia Schwantesia Sciadopitys Scilla Scindapsus Scirpoides Sclerocactus Scoliopsus Scopolia Scrophularia (figwort) Scutellaria Securinega Sedum (stonecrop) Selaginella Selago Selenicereus Selinum Semele Semiaquilegia Semiarundinaria Sempervivum (hens and chicks) Senecio Senna Sequoia Sequoiadendron Seriphidium Serissa Serruria Sesbania Sesleria Setaria Shepherdia Shibataea Shortia Sibiraea Sidalcea Sideritis Silene (campion) Silphium Silybum Simmondsia (jojoba) Sinningia Sinocalycanthus Sinofranchetia Sinojackia Sinowilsonia Sisyrinchium Skimmia Smilacina Smilax Smithiantha Smyrnium Sobralia Solandra Solanum (potato, nightshade) Soldanella (snowbell) Soleirolia Solenopsis Solenostemon Solidago (goldenrod) Solidaster (hybrid genus) Sollya Sonerila Sophora Sophrolaeliocattleya (trigeneric hybrid orchid) Sophronitis Sorbaria Sorbus Sorghastrum Sparaxis Sparganium Sparrmania Spartina (cord grass) Spartium (broom) Spathiphyllum Spathodea Sphaeralcea Spigelia Spiraea (spirea) Sprianthes Sporobolus Sprekelia Stachys (betony) Stachyurus Stangeria Stanhopea Stapelia Stapelianthus Staphylea (bladdernut) Stauntonia Stenanthium Stenocactus Stenocarpus Stenocereus Stenomesson Stenotaphron Stenotus Stephanandra Stephanocereus Stephanotis Sternbergia Stewartia 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 Synnotia Synthyris Syringa (lilac) Syzygium T Tabebuia Tabernaemontana Tacca Tagetes (marigold) Talinum (fameflower) Tamarix (tamarisk) Tanacetum Tanakaea Tanakea Tapeinochilus Taxodium Taxus (yew) Tecoma Tecomanthe Tecomaria Techophilaea Telekia Telephium Tellima Telopea (waratah) Templetonia Terminalia Ternstroemia Tetracentron Tetradium (bee tree) Tetranema Tetraneuris Tetrapanax Tetrastigma Tetratheca Teucrium Thalia Thalictrum Thelesperma Thelocactus Thelypteris Thermopsi Thespesia Thevetia Thlaspi Thrinax (thatch palm) Thryptomene (heath myrtle) Thuja (arborvitae) Thujopsis 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 Trachelospermum Trachycarpus Trachymene Tradescantia Trapa (water chestnut) Trichodiadema Trichosanthes Tricyrtis (toad lily) Trientalis Trifolium (clover) Trillium Tripetaleia Tripterygium Triteleia Tritonia Trochodendron Trollius (globeflower) Tropaeolum Tsuga (hemlock) Tsusiophyllum Tuberaria Tulbaghia Tulipa (tulip) Tweedia Tylecodon Typha (cattail) U Uebelmannia Ugni Ulex (furze, gorse) Ulmus (elm) Umbellularia Uncinia Uniola Urceolina Urginea Ursinia Utricularia (bladderwort) Uvularia (merrybells) V Vaccinium (blueberry, cranberry, huckleberry) Valeriana (valerian) Vallea Vancouveria Vanda Vanilla Veitchia Vellozia Veltheimia Venidium Veratrum Verbascum (mullein) Verbena Vernonia (ironweed) Veronica (speedwell) Veronicastrum Verticordia Vestia Viburnum Victoria (giant waterlily) Vigna Viguiera Vinca (periwinkle) Viola (pansy, violet) Virgilia Viscaria Vitaliana Vitex Vitis (grape) Vriesea W 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 Xanthoceras Xanthorhiza Xanthosoma Xeranthemum Xerophyllum Y Yucca Yushania Z Zaluzianskya Zamia Zantedeschia (calla lily) Zanthoxylum Zauschneria Zea (maize) Zelkova Zenobia Zephyranthes Zigadenus Zinnia Zizania (wild rice) Zygopetalum