Select a state: North America Alabama Alaska Alberta Arizona Arkansas British Columbia California Colorado Connecticut Delaware Florida Georgia Greenland Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Manitoba Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Brunswick New Foundland And Labrador New Hampshire New Jersey New Mexico New York North Carolina North Dakota North West Territories Nova Scotia Ohio Oklahoma Ontario Oregon Pennsylvania Prince Edouard Island Puerto Rico Quebec Rhode Island Saskatchewan South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington D.C. Washington West Virginia Wisconsin Wyoming Yukon Territories
Fabaceae Malvaceae Euphorbiaceae Asteraceae Aceraceae Amaranthaceae Calyceraceae Ranunculaceae Acoraceae Pteridaceae Poaceae Hippocastanaceae Apiaceae Scrophulariaceae Lamiaceae Rosaceae Caryophyllaceae Simaroubaceae Liliaceae Alismataceae Betulaceae Lythraceae Vitaceae Apocynaceae Primulaceae Polygonaceae Orchidaceae Burmanniaceae Brassicaceae Araliaceae Papaveraceae Araceae Aristolochiaceae Asclepiadaceae Annonaceae Aspleniaceae Dryopteridaceae Chenopodiaceae Azollaceae Gentianaceae Bataceae Ericaceae Iridaceae Berberidaceae Rhamnaceae Bignoniaceae Urticaceae Nyctaginaceae Ophioglossaceae Verbenaceae Saxifragaceae Cabombaceae Moraceae Buddlejaceae Boraginaceae Cyperaceae Solanaceae Commelinaceae Callitrichaceae Calycanthaceae Menispermaceae Convolvulaceae Campanulaceae Cannaceae Cannabaceae Sapindaceae Juglandaceae Fagaceae Cucurbitaceae Celastraceae Ulmaceae Rubiaceae Empetraceae Ceratophyllaceae Parkeriaceae Cupressaceae Pyrolaceae Oleaceae Lauraceae Onagraceae Portulacaceae Capparaceae Clethraceae Cyrillaceae Santalaceae Orobanchaceae Tiliaceae Cornaceae Fumariaceae Anacardiaceae Crassulaceae Stemonaceae Cuscutaceae Hydrangeaceae Dennstaedtiaceae Acanthaceae Gleicheniaceae Caprifoliaceae Dioscoreaceae Ebenaceae Dipsacaceae Thymelaeaceae Droseraceae Hydrocharitaceae Pontederiaceae Elaeagnaceae Elatinaceae Equisetaceae Eriocaulaceae Geraniaceae Sterculiaceae Hamamelidaceae Diapensiaceae Loganiaceae Theaceae Styracaceae Cymodoceaceae Cistaceae Lycopodiaceae Violaceae Hydrophyllaceae Hymenophyllaceae Clusiaceae Aquifoliaceae Illiciaceae Balsaminaceae Polemoniaceae Isoetaceae Grossulariaceae Juncaceae Zygophyllaceae Haemodoraceae Lemnaceae Chrysobalanaceae Plumbaginaceae Linaceae Magnoliaceae Lygodiaceae Thelypteridaceae Agavaceae Marsileaceae Mayacaceae Meliaceae Molluginaceae Monotropaceae Myricaceae Haloragaceae Najadaceae Nelumbonaceae Nymphaeaceae Menyanthaceae Cactaceae Osmundaceae Oxalidaceae Buxaceae Passifloraceae Piperaceae Polypodiaceae Viscaceae Phytolaccaceae Lentibulariaceae Pinaceae Turneraceae Plantaginaceae Platanaceae Podostemaceae Polygalaceae Rutaceae Salicaceae Potamogetonaceae Pedaliaceae Psilotaceae Punicaceae Resedaceae Arecaceae Melastomataceae Ruppiaceae Salviniaceae Sarraceniaceae Saururaceae Schisandraceae Selaginellaceae Aizoaceae Sapotaceae Smilacaceae Sparganiaceae Sphenocleaceae Staphyleaceae Symplocaceae Marantaceae Bromeliaceae Juncaginaceae Typhaceae Valerianaceae Vittariaceae Blechnaceae Xyridaceae Zannichelliaceae
Abrus Abutilon Acacia Acalypha Acanthospermum Acer Achillea Achyranthes Acicarpha Acmella Aconitum Acorus Actaea Adiantum Adonis Aegilops Aeschynomene Aesculus Aethusa Agalinis Agastache Ageratina Ageratum Agrimonia Agropogon Agrostemma Agrostis Ailanthus Aira Ajuga Albizia Aletris Alisma Allium Alnus Alopecurus Alternanthera Alysicarpus Amaranthus Ambrosia Amelanchier Amianthium Ammannia Ammi Amorpha Ampelopsis Amphiachyris Amphianthus Amphicarpaea Amphicarpum Amsonia Anagallis Andropogon Anemone Angelica Antennaria Anthaenantia Anthemis Anthoxanthum Antigonon Aphanes Apios Aplectrum Apocynum Apteria Aquilegia Arabidopsis Arabis Arachis Aralia Arctium Arenaria Argemone Arisaema Aristida Aristolochia Arnica Arnoglossum Arrhenatherum Artemisia Arthraxon Aruncus Arundinaria Arundo Asarum Asclepias Asimina Asparagus Asplenium Aster Astragalus Astranthium Astrolepis Athyrium Atriplex Aureolaria Avena Axonopus Azolla Baccharis Bacopa Balduina Ballota Baptisia Barbarea Bartonia Batis Bejaria Belamcanda Berberis Berchemia Berlandiera Beta Betula Bidens Bigelowia Bignonia Blephilia Boehmeria Boerhavia Boltonia Borrichia Bothriochloa Botrychium Bouchea Bouteloua Bowlesia Boykinia Brachyelytrum Brasenia Brassica Brickellia Briza Bromus Broussonetia Brunnichia Buchnera Buddleja Buglossoides Bulbostylis Bupleurum Burmannia Cabomba Cakile Calamagrostis Calamintha Calamovilfa Calibrachoa Callicarpa Callirhoe Callisia Callitriche Calopogon Calycanthus Calycocarpum Calyptocarpus Calystegia Camassia Campanula Campanulastrum Campsis Canavalia Canna Cannabis Capsella Capsicum Cardamine Cardiospermum Carduus Carex Carphephorus Carpinus Carya Castanea Castilleja Catalpa Catapodium Caulophyllum Cayaponia Ceanothus Celastrus Celosia Celtis Cenchrus Centaurea Centella Centrosema Cephalanthus Cerastium Ceratiola Ceratophyllum Ceratopteris Cercis Chaenorhinum Chaerophyllum Chamaecrista Chamaecyparis Chamaelirium Chamaesyce Chaptalia Chasmanthium Cheilanthes Chelone Chenopodium Chimaphila Chionanthus Chloris Chrozophora Chrysogonum Chrysoma Chrysopsis Chrysosplenium Cicer Cichorium Cicuta Cinna Cinnamomum Circaea Cirsium Cissus Citrullus Cladium Cladrastis Claytonia Cleistes Clematis Cleome Clerodendrum Clethra Cliftonia Clinopodium Clitoria Cnicus Cnidoscolus Cocculus Coelorachis Collinsonia Colocasia Comandra Commelina Conioselinum Conium Conoclinium Conopholis Conradina Conringia Consolida Convallaria Convolvulus Conyza Cooperia Corallorhiza Corchorus Coreopsis Cornus Coronopus Cortaderia Corydalis Corylus Cosmos Cotinus Crassula Crataegus Crepis Crinum Croomia Croptilon Crotalaria Croton Cruciata Cryptotaenia Ctenium Cucumis Cucurbita Cunila Cuphea Cuscuta Cycloloma Cyclospermum Cynanchum Cynodon Cynoglossum Cynosciadium Cynosurus Cyperus Cypripedium Cyrilla Cyrtomium Cystopteris Cytisus Dactylis Dactyloctenium Dalea Danthonia Dasistoma Datura Daucus Decodon Decumaria Delphinium Dennstaedtia Deparia Deschampsia Desmanthus Desmodium Diamorpha Dianthus Diarrhena Dicentra Dicerandra Dichanthelium Dichondra Dicliptera Dicranopteris Didiplis Diervilla Digitaria Dioclea Diodia Dioscorea Diospyros Diphylleia Diplazium Diplotaxis Dipsacus Dirca Distichlis Ditrysinia Dodecatheon Doellingeria Draba Dracopis Drosera Dryopteris Duchesnea Dulichium Dyschoriste Ecballium Echinacea Echinochloa Echinodorus Eclipta Egeria Eichhornia Elaeagnus Elatine Eleocharis Elephantopus Eleusine Elionurus Elodea Elymus Enemion Enteropogon Epidendrum Epifagus Epigaea Epilobium Equisetum Eragrostis Erechtites Eremochloa Erigenia Erigeron Eriocaulon Eriochloa Eriogonum Erodium Erucastrum Eryngium Erysimum Erythrina Erythronium Eschscholzia Eubotrys Euonymus Eupatoriadelphus Eupatorium Euphorbia Eurybia Eustachys Eustoma Euthamia Evax Evolvulus Facelis Fagopyrum Fagus Fatoua Festuca Ficus Filago Fimbristylis Firmiana Flaveria Fleischmannia Forestiera Forsythia Fothergilla Fragaria Frangula Frasera Fraxinus Froelichia Fuirena Fumaria Gaillardia Galactia Galax Galearis Galinsoga Galium Gamochaeta Gaultheria Gaura Gaylussacia Gelsemium Gentiana Geranium Geum Gillenia Gladiolus Glandularia Glebionis Glechoma Gleditsia Glochidion Glyceria Glycine Gochnatia Goodyera Gordonia Gossypium Gratiola Grindelia Gymnocladus Gymnopogon Gymnostyles Gypsophila Habenaria Habranthus Hackelia Hackelochloa Halesia Halodule Hamamelis Hedeoma Hedera Helenium Helianthemum Helianthus Heliopsis Heliotropium Hemerocallis Hepatica Heteranthera Heteropogon Heterotheca Heuchera Hexalectris Hexastylis Hibiscus Hieracium Holcus Holosteum Hordeum Hottonia Houstonia Humulus Huperzia Hybanthus Hydrangea Hydrastis Hydrilla Hydrocotyle Hydrolea Hydrophyllum Hygrophila Hymenocallis Hymenopappus Hymenophyllum Hymenoxys Hypericum Hypochaeris Hypoxis Hyptis Ilex Illicium Impatiens Imperata Indigofera Iodanthus Ionactis Ipomoea Ipomopsis Iresine Iris Isoetes Isolepis Isotria Itea Iva Jaborosa Jacquemontia Jamesianthus Jasminum Jeffersonia Juglans Juncus Juniperus Justicia Kallstroemia Kalmia Kerria Kickxia Koeleria Koelreuteria Kosteletzkya Krigia Kummerowia Kyllinga Lachnanthes Lachnocaulon Lactuca Lagenaria Lagerstroemia Lamium Landoltia Lantana Laportea Lathyrus Leavenworthia Lechea Leersia Lemna Leonotis Leontodon Leonurus Lepidium Leptochloa Leptopus Lepuropetalon Lespedeza Lesquerella Leucanthemum Leucojum Leucospora Leucothoe Liatris Licania Ligusticum Ligustrum Lilaeopsis Lilium Limnobium Limnodea Limonium Linaria Lindera Lindernia Linum Liparis Lipocarpha Liquidambar Liriodendron Liriope Listera Lithospermum Lobelia Lolium Lonicera Lophiola Lotus Ludwigia Lupinus Luziola Luzula Lychnis Lycium Lycopodiella Lycopodium Lycopus Lygodium Lyonia Lysimachia Lythrum Macleaya Maclura Macranthera Macrothelypteris Madia Magnolia Mahonia Maianthemum Malaxis Malus Malva Malvastrum Malvaviscus Manfreda Manihot Marrubium Marshallia Marsilea Matelea Mayaca Mazus Mecardonia Medeola Medicago Melanthera Melia Melica Melilotus Melochia Melothria Menispermum Mentha Mercurialis Merremia Mertensia Micranthemum Microstegium Mikania Mimosa Mimulus Minuartia Mirabilis Miscanthus Mitchella Mitella Mitreola Modiola Mollugo Momordica Monarda Monotropa Monotropsis Morella Morus Mucuna Muhlenbergia Murdannia Muscari Myosotis Myosurus Myriophyllum Najas Nama Nandina Narcissus Nassella Nasturtium Neeragrostis Nelumbo Nemastylis Nemophila Neobeckia Nepeta Nephrolepis Neptunia Nerium Nestronia Neviusia Nicandra Nicotiana Nolina Nothoscordum Nuphar Nuttallanthus Nymphaea Nymphoides Nyssa Obolaria Oclemena Oenothera Oldenlandia Oligoneuron Onoclea Onopordum Onosmodium Ophioglossum Oplismenus Opuntia Orbexilum Ornithogalum Orobanche Orontium Oryza Osmanthus Osmorhiza Osmunda Ostrya Oxalis Oxycaryum Oxydendrum Oxypolis Pachysandra Packera Panax Panicum Papaver Parapholis Parietaria Parkinsonia Parnassia Paronychia Parthenium Parthenocissus Paspalidium Paspalum Passiflora Paulownia Pedicularis Pediomelum Pellaea Peltandra Pennisetum Penstemon Penthorum Peperomia Perideridia Perilla Persea Petrorhagia Petunia Phacelia Phalaris Phanopyrum Phaseolus Phegopteris Phemeranthus Philadelphus Phlebodium Phleum Phlox Phoebanthus Phoradendron Photinia Phragmites Phryma Phyla Phyllanthus Phyllostachys Physalis Physocarpus Physostegia Phytolacca Picris Pieris Pilea Pilularia Pinguicula Pinus Piptochaetium Piriqueta Pistacia Pityopsis Planera Plantago Platanthera Platanus Pleea Pleopeltis Pluchea Poa Podophyllum Podostemum Pogonia Polanisia Polemonium Polycarpon Polygala Polygonatum Polygonella Polygonum Polymnia Polypodium Polypogon Polypremum Polystichum Polytaenia Poncirus Pontederia Ponthieva Populus Portulaca Potamogeton Potentilla Prenanthes Proboscidea Prosartes Proserpinaca Prunella Prunus Pseudognaphalium Psilotum Ptelea Pteridium Pteris Pterocaulon Pteroglossaspis Ptilimnium Pueraria Punica Pycnanthemum Pyracantha Pyrrhopappus Pyrularia Pyrus Quercus Ranunculus Raphanus Ratibida Reimarochloa Reseda Rhamnus Rhapidophyllum Rheum Rhexia Rhododendron Rhodotypos Rhus Rhynchosia Rhynchospora Ribes Richardia Ricinus Robinia Rorippa Rosa Rostraria Rotala Rubus Rudbeckia Ruellia Rumex Ruppia Ruta Sabal Sabatia Saccharum Sacciolepis Sageretia Sagina Sagittaria Salicornia Salix Salsola Salvia Salvinia Sambucus Samolus Sanguinaria Sanicula Sapindus Saponaria Sarcocornia Sarracenia Sassafras Saururus Saxifraga Scandix Schedonorus Schisandra Schizachyrium Schoenolirion Schoenoplectus Schwalbea Scirpus Scleranthus Scleria Sclerolepis Scolymus Scoparia Scrophularia Scutellaria Secale Securigera Sedum Selaginella Senecio Senna Serenoa Sericocarpus Sesamum Sesbania Sesuvium Setaria Seymeria Sherardia Sibara Sicyos Sida Sideroxylon Silene Silphium Silybum Sinapis Sisymbrium Sisyrinchium Sium Smallanthus Smilax Solanum Solidago Soliva Sonchus Sorghastrum Sorghum Sparganium Spartina Spergula Spergularia Spermacoce Spermolepis Sphenoclea Sphenopholis Spigelia Spiraea Spiranthes Spirodela Sporobolus Stachys Stachytarpheta Staphylea Steinchisma Stellaria Stenanthium Stenaria Stenotaphrum Stewartia Stillingia Stipulicida Stokesia Strophostyles Stuckenia Stylisma Stylodon Stylophorum Stylosanthes Styrax Suaeda Symphoricarpos Symphyotrichum Symplocos Synandra Syngonanthus Taenidia Tagetes Tanacetum Taraxacum Taxodium Tephrosia Tetragonotheca Teucrium Thalia Thalictrum Thaspium Thelypteris Thermopsis Thymelaea Thymophylla Tiarella Tilia Tillandsia Tipularia Torilis Toxicodendron Trachelospermum Tradescantia Tragia Trautvetteria Trepocarpus Triadenum Triadica Triantha Trianthema Trichomanes Trichostema Tridens Trifolium Triglochin Trillium Triodanis Triosteum Triphora Triplasis Tripleurospermum Tripsacum Tristagma Triticum Tsuga Typha Ulmus Uncinia Uniola Urochloa Urtica Utricularia Uvularia Vaccaria Vaccinium Valeriana Valerianella Vallisneria Veratrum Verbascum Verbena Verbesina Vernicia Vernonia Veronica Veronicastrum Viburnum Vicia Vigna Vinca Viola Vitex Vitis Vittaria Vulpia Wahlenbergia Waldsteinia Waltheria Warea Websteria Wedelia Wisteria Wolffia Wolffiella Woodsia Woodwardia Xanthium Xanthorhiza Xerophyllum Xyris Yeatesia Youngia Yucca Zannichellia Zanthoxylum Zea Zephyranthes Zigadenus Zizania Zizaniopsis Zizia Ziziphus Zornia Zoysia