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Identification Keys
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Sonoran Desert Region Key
Taxon:
-- Select a Taxonomic Group --
All Species
Dicots (ANITA, Magnoliids, Eudicots)
Ferns and Allies
Gymnosperms
Monocots
Moss
--------------------------
Abies
Abronia
Abutilon
Acacia
Acalypha
Acanthaceae
Acanthocereus
Acer
Aceraceae
Achatocarpaceae
Achillea
Achimenes
Achnatherum
Acmella
Acourtia
Adelia
Adenophyllum
Adenostoma
Adiantum
Adolphia
Adoxaceae
Aegopogon
Aeschynomene
Aesculus
Agalinis
Agastache
Agavaceae
Agave
Ageratella
Ageratina
Ageratum
Agonandra
Agrimonia
Agrostis
Ailanthus
Aizoaceae
Albizia
Alchemilla
Aldama
Alisma
Alismataceae
Allenrolfea
Allium
Alloispermum
Allosidastrum
Almutaster
Alnus
Aloaceae
Aloe
Alomia
Aloysia
Alternanthera
Alvaradoa
Alvordia
Amaranthaceae
Amaranthus
Amaryllidaceae
Amauria
Ambrosia
Amelanchier
Amicia
Ammannia
Ammi
Ammoselinum
Amoreuxia
Amorpha
Ampelopsis
Amsinckia
Amsonia
Amyris
Anacardiaceae
Anagallis
Anaphalis
Andrachne
Andropogon
Androsace
Androstephium
Anemia
Anemiaceae
Anemone
Anemopsis
Anethum
Anisacanthus
Anisocoma
Anoda
Antennaria
Anthephora
Antheropeas
Anthriscus
Antigonon
Antirrhinum
Apacheria
Aphananthe
Aphanosperma
Apiaceae
Apocynaceae
Apodanthera
Aquifoliaceae
Aquilegia
Arabis
Araceae
Aralia
Araliaceae
Arbutus
Arceuthobium
Archibaccharis
Arctomecon
Arctostaphylos
Ardisia
Arecaceae
Arenaria
Argemone
Argyrochosma
Argythamnia
Aristida
Aristolochia
Aristolochiaceae
Arrabidaea
Artemisia
Arundinella
Arundo
Asclepiadaceae
Asclepias
Asparagaceae
Asphodelus
Aspicarpa
Aspleniaceae
Asplenium
Aster
Asteraceae
Astragalus
Astranthium
Astrolepis
Athyrium
Atrichoseris
Atriplex
Avena
Avicennia
Axonopus
Ayenia
Azolla
Azollaceae
Baccharis
Bacopa
Bahiopsis
Baileya
Barkleyanthus
Bassia
Bastardia
Bastardiastrum
Bataceae
Batis
Bauhinia
Bebbia
Begonia
Begoniaceae
Behria
Belamcanda
Berberidaceae
Berberis
Bergerocactus
Bergia
Berlandiera
Bernardia
Bernoullia
Betulaceae
Bidens
Bignoniaceae
Bixaceae
Blechnaceae
Blechnum
Blechum
Blepharoneuron
Bletia
Blumea
Bocconia
Boerhavia
Bombacaceae
Bommeria
Boraginaceae
Bothriochloa
Botrychium
Bouchea
Bougainvillea
Bouteloua
Bouvardia
Bowlesia
Brachiaria
Brachistus
Brachystigma
Brahea
Brandegea
Brassavola
Brassica
Brassicaceae
Brickellia
Briquetia
Bromelia
Bromeliaceae
Bromus
Brongniartia
Brosimum
Browallia
Buchnera
Buddleja
Buddlejaceae
Bulbostylis
Bunchosia
Bursera
Burseraceae
Butomaceae
Byttneria
Cactaceae
Caesalpinia
Calandrinia
Calea
Calibrachoa
Callaeum
Calliandra
Callisia
Callitrichaceae
Callitriche
Calochortus
Calycoseris
Calylophus
Calyptocarpus
Camissonia
Campanulaceae
Campsis
Campyloneurum
Canavalia
Cannabaceae
Cannabis
Canotia
Capparaceae
Capparidaceae
Capparis
Capraria
Caprifoliaceae
Capsella
Capsicum
Cardamine
Cardiospermum
Carex
Caricaceae
Carlowrightia
Carminatia
Carnegiea
Carphochaete
Carpobrotus
Carthamus
Caryophyllaceae
Casimiroa
Cassia
Castalis
Castela
Castilleja
Cathestecum
Caulanthus
Ceanothus
Cedrela
Ceiba
Celastraceae
Celtis
Cenchrus
Centaurea
Centaurium
Centrosema
Cephalanthus
Cerastium
Cercis
Cercocarpus
Cestrum
Chaenactis
Chaetymenia
Chamaebatiaria
Chamaecrista
Chaptalia
Cheilanthes
Chenopodiaceae
Chenopodium
Chimaphila
Chiococca
Chloracantha
Chloris
Chloroleucon
Chlorophora
Choisya
Chorispora
Chorizanthe
Chromolaena
Chrysothamnus
Cichorium
Cicuta
Cinnamomum
Cirsium
Cissampelos
Cissus
Cistaceae
Cistanthe
Citharexylum
Citrullus
Citrus
Cladocolea
Clarkia
Clematis
Cleomaceae
Cleome
Clethra
Clethraceae
Clidemia
Clitoria
Clusiaceae
Cneoridium
Cnidoscolus
Coccoloba
Cocculus
Cochemiea
Cochlospermaceae
Cochlospermum
Coleogyne
Collinsia
Cologania
Colubrina
Columnea
Comarostaphylis
Combretaceae
Commelina
Commelinaceae
Condalia
Conioselinum
Conocarpus
Conoclinium
Conopholis
Consolida
Convolvulaceae
Convolvulus
Conyza
Conzattia
Corallorhiza
Corchorus
Cordia
Coreocarpus
Coreopsis
Coriandrum
Cornaceae
Cornus
Corrigiola
Cortaderia
Corydalis
Corynopuntia
Coryphantha
Cosmos
Cottea
Coursetia
Cranichis
Crassula
Crassulaceae
Crateva
Crescentia
Cressa
Crocosmia
Crossosoma
Crossosomataceae
Crotalaria
Croton
Crusea
Cryptantha
Cryptostegia
Cucumis
Cucurbita
Cucurbitaceae
Cuphea
Cupressaceae
Cupressus
Cuscuta
Cuscutaceae
Cyclanthera
Cyclospermum
Cylindropuntia
Cymbopogon
Cymopterus
Cynanchum
Cyperaceae
Cyperus
Cyrtocarpa
Cyrtopodium
Cystopteris
Dactyloctenium
Dahlia
Dalea
Dalechampia
Dalembertia
Dasylirion
Dasyochloa
Datura
Daucus
Decachaeta
Delilia
Delonix
Delphinium
Dendromecon
Dendropanax
Dennstaedtia
Dennstaedtiaceae
Deppea
Deschampsia
Descurainia
Desmanthus
Desmodium
Diaperia
Dicentra
Dichanthelium
Dichanthium
Dichelostemma
Dichondra
Dicliptera
Dicoria
Diectomis
Digitaria
Dimorphotheca
Diodia
Dioon
Dioscorea
Dioscoreaceae
Diospyros
Diphysa
Diplacus
Distichlis
Ditaxis
Dithyrea
Dodonaea
Donnellsmithia
Dorstenia
Doyerea
Draba
Drymaria
Dryopteridaceae
Dryopteris
Drypetes
Dudleya
Dugaldia
Dyschoriste
Dysphania
Ebenaceae
Ebenopsis
Echeandia
Echeveria
Echinocactus
Echinocereus
Echinochloa
Echinodorus
Echinomastus
Echinopepon
Echinopterys
Eclipta
Egletes
Ehretia
Eichhornia
Elaphoglossum
Elatinaceae
Eleocharis
Elephantopus
Eleusine
Elionurus
Elymus
Elytraria
Encelia
Encyclia
Enneapogon
Enteropogon
Ephedra
Ephedraceae
Epilobium
Epipactis
Epithelantha
Equisetaceae
Equisetum
Eragrostis
Eremalche
Eremophila
Eriastrum
Ericaceae
Ericameria
Erigeron
Eriocaulaceae
Eriocaulon
Eriochloa
Eriodictyon
Eriogonum
Erioneuron
Eriophyllum
Eriosema
Erodium
Errazurizia
Eruca
Eryngium
Erysimum
Erythrina
Erythroxylaceae
Erythroxylon
Erythroxylum
Eschscholzia
Escobedia
Esenbeckia
Eucalyptus
Eucnide
Eucrypta
Eupatorium
Euphorbia
Euphorbiaceae
Evax
Evolvulus
Eysenhardtia
Fabaceae
Fagaceae
Fagonia
Fallugia
Fendlera
Ferocactus
Festuca
Ficus
Filago
Fimbristylis
Flacourtiaceae
Flaveria
Fleischmannia
Florestina
Flourensia
Foeniculum
Forchhammeria
Forestiera
Fouquieria
Fouquieriaceae
Fragaria
Frankenia
Frankeniaceae
Frasera
Fraxinus
Fremontodendron
Froelichia
Fuirena
Fumaria
Fumariaceae
Funastrum
Gaillardia
Galactia
Galinsoga
Galium
Galphimia
Galvezia
Gamochaeta
Garrya
Garryaceae
Gaudichaudia
Gaultheria
Gaura
Gazania
Gelsemium
Gentiana
Gentianaceae
Gentianella
Gentianopsis
Geraniaceae
Geranium
Gesneriaceae
Gibasis
Gilia
Gladiolus
Glandularia
Glandulicactus
Glaucium
Glebionis
Gleditsia
Glinus
Gliricidia
Gnaphalium
Gochnatia
Gomphrena
Gongylocarpus
Gonolobus
Goodyera
Gossypium
Gouania
Gouinia
Govenia
Graptopetalum
Grayia
Gronovia
Grossulariaceae
Grusonia
Guaiacum
Guardiola
Guarianthe
Guazuma
Gutierrezia
Gymnosperma
Habenaria
Hackelochloa
Haematoxylon
Haematoxylum
Halenia
Haloragaceae
Hamelia
Haplopappus
Haplophyton
Harfordia
Harpagonella
Havardia
Hechtia
Hedeoma
Hedera
Hedyotis
Heimia
Helenium
Helianthemum
Helianthus
Helicteres
Heliocarpus
Heliomeris
Heliopsis
Heliotropium
Hemizonia
Henrya
Heracleum
Herissantia
Hermannia
Herniaria
Hesperaloe
Hesperocallis
Hesperostipa
Hesperoyucca
Heteranthera
Heteromeles
Heteropogon
Heteropterys
Heterosperma
Heterotheca
Heuchera
Hexalectris
Hibiscus
Hieracium
Hilaria
Hintonia
Hippobroma
Hippocastanaceae
Hochreutinera
Hoffmannia
Hoffmannseggia
Hofmeisteria
Holodiscus
Holographis
Hordeum
Horsfordia
Houstonia
Hybanthus
Hydrangea
Hydrangeaceae
Hydrilla
Hydrocharitaceae
Hydrocleys
Hydrocotyle
Hydrolea
Hydrophyllaceae
Hygrophila
Hymenocallis
Hymenothrix
Hymenoxys
Hypericum
Hypoxidaceae
Hypoxis
Hyptis
Ibervillea
Ilex
Illiciaceae
Illicium
Imperata
Indigofera
Iostephane
Ipomoea
Ipomopsis
Iresine
Iridaceae
Iris
Isocoma
Iva
Jacquemontia
Jacquinia
Jaegeria
Jaltomata
Janusia
Jarilla
Jasminum
Jatropha
Jaumea
Jouvea
Juglandaceae
Juglans
Juncaceae
Juncaginaceae
Juncus
Juniperus
Jussiaea
Justicia
Kallstroemia
Karwinskia
Keckiella
Kniphofia
Koanophyllon
Koeberliniaceae
Koeleria
Kosteletzkya
Krameria
Krameriaceae
Krascheninnikovia
Kyllinga
Lactuca
Laelia
Laennecia
Lagascea
Lagenaria
Lagerstroemia
Laguncularia
Lamarckia
Lamiaceae
Lamium
Lamourouxia
Lantana
Lapeirousia
Lappula
Larrea
Lasiacis
Lasianthaea
Lasthenia
Lathyrus
Lauraceae
Lavandula
Lavatera
Layia
Lechea
Leibnitzia
Lemna
Lemnaceae
Lennoa
Lennoaceae
Lentibulariaceae
Leonotis
Lepechinia
Lepidium
Leptochloa
Leptodactylon
Leucaena
Leucelene
Leucophyllum
Lilaea
Lilaeopsis
Liliaceae
Lilium
Limnocharis
Limnocharitaceae
Limonium
Linaceae
Linanthus
Linum
Liparis
Lipocarpha
Lippia
Lithospermum
Litsea
Loasaceae
Lobelia
Lobularia
Loeflingia
Loeselia
Loganiaceae
Lolium
Lonchocarpus
Lonicera
Lopezia
Loranthaceae
Lotus
Ludwigia
Luffa
Lupinus
Luziola
Luzula
Lycianthes
Lycium
Lycurus
Lysiloma
Lythraceae
Maba
Mabrya
Macfadyena
Machaeranthera
Macromeria
Macroptilium
Macroscepis
Macrosiphonia
Magnolia
Magnoliaceae
Malacothamnus
Malacothrix
Malaxis
Malosma
Malperia
Malpighia
Malpighiaceae
Malva
Malvaceae
Malvastrum
Malvaviscus
Malvella
Mammillaria
Mandevilla
Manfreda
Mangifera
Manihot
Manilkara
Marah
Margaranthus
Marina
Marrubium
Marsdenia
Marsilea
Marsileaceae
Martynia
Martyniaceae
Matelea
Matricaria
Matthiola
Maurandya
Maytenus
Mecardonia
Medicago
Melampodium
Melanthiaceae
Melastomataceae
Melia
Meliaceae
Melilotus
Melinis
Melochia
Melothria
Menispermaceae
Menodora
Mentha
Mentzelia
Menyanthaceae
Merremia
Mertensia
Mesembryanthemum
Metastelma
Microchloa
Microgramma
Micromeria
Microsechium
Microseris
Mildella
Milla
Milleria
Mimosa
Mimulus
Mirabilis
Mitracarpus
Mohavea
Molluginaceae
Mollugo
Moluccella
Momordica
Monarda
Monardella
Monnina
Monolepis
Monoptilon
Monotropa
Monotropaceae
Montanoa
Moraceae
Mortonia
Morus
Muhlenbergia
Myoporaceae
Myosurus
Myriophyllum
Myrsinaceae
Myrtaceae
Myrtillocactus
Najadaceae
Najas
Nama
Nassella
Nasturtium
Nemophila
Neogaerrhinum
Neomarica
Nephrolepis
Neptunia
Nerium
Nesaea
Nicandra
Nicolletia
Nicotiana
Nissolia
Nolina
Nopalea
Notholaena
Nothoscordum
Nuphar
Nuttallanthus
Nyctaginaceae
Nyctocereus
Nymphaea
Nymphaeaceae
Nymphoides
Ocimum
Odontonema
Oenothera
Okenia
Olacaceae
Oleaceae
Oligomeris
Olneya
Onagraceae
Oncidium
Operculina
Ophioglossaceae
Ophioglossum
Opiliaceae
Oplismenus
Opuntia
Orchidaceae
Oreopanax
Ornithocarpa
Ornithostaphylos
Orobanchaceae
Orobanche
Orthilia
Oserya
Osmanthus
Ostrya
Otatea
Oxalidaceae
Oxalis
Pachgerocereus
Pachycereus
Pachycormus
Packera
Palafoxia
Panicum
Papaver
Papaveraceae
Pappophorum
Parietaria
Parkinsonia
Parthenice
Parthenium
Parthenocissus
Paspalum
Passiflora
Passifloraceae
Paullinia
Pectis
Pectocarya
Pedaliaceae
Pedicularis
Pedilanthus
Pediocactus
Pediomelum
Peganum
Pellaea
Peniocereus
Pennellia
Pennisetum
Penstemon
Pentzia
Peperomia
Pereilema
Pereskiopsis
Periptera
Perityle
Persea
Perymenium
Petalonyx
Peteria
Petiveria
Petrea
Petunia
Peucephyllum
Phacelia
Phalaris
Phanerophlebia
Phaseolus
Phaulothamnus
Phemeranthus
Philadelphus
Phlebodium
Phlomis
Phlox
Phoenix
Pholisma
Phoradendron
Phragmites
Phrymaceae
Phyla
Phyllanthus
Physalis
Physaria
Physostegia
Phytolacca
Phytolaccaceae
Pickeringia
Pilea
Pilosocereus
Pinaceae
Pinaropappus
Pinguicula
Pinus
Piper
Piperaceae
Piptochaetium
Piscidia
Pisonia
Pitcairnia
Pithecellobium
Pityrogramma
Plagiobothrys
Plagiogyria
Plagiogyriaceae
Plantaginaceae
Plantago
Platanaceae
Platanthera
Platanus
Platymiscium
Platystemon
Pleopeltis
Pleuraphis
Pleurocoronis
Pluchea
Plumbaginaceae
Plumbago
Plumeria
Poa
Poaceae
Podostemaceae
Polanisia
Polemoniaceae
Polemonium
Polyclathra
Polygala
Polygalaceae
Polygonaceae
Polygonum
Polypodiaceae
Polypodium
Polypogon
Polypremum
Polystichum
Pomaria
Pontederiaceae
Populus
Porophyllum
Portulaca
Portulacaceae
Potamogeton
Potamogetonaceae
Potentilla
Pouteria
Pouzolzia
Prenanthella
Primula
Primulaceae
Prionosciadium
Priva
Proboscidea
Prosopidastrum
Prosopis
Prunus
Psacalium
Psathyrotes
Pseudabutilon
Pseuderanthemum
Pseudobombax
Pseudognaphalium
Pseudorontium
Pseudotsuga
Psidium
Psilactis
Psilostrophe
Psilotaceae
Psilotum
Psittacanthus
Psorothamnus
Psychotria
Ptelea
Pteridaceae
Pteridium
Pteris
Pterostegia
Punica
Punicaceae
Purshia
Pyrolaceae
Pyrrhopappus
Pyrus
Quercus
Quincula
Rafinesquia
Ramirezella
Randia
Ranunculaceae
Ranunculus
Raphanus
Ratibida
Resedaceae
Rhamnaceae
Rhamnus
Rhizophora
Rhizophoraceae
Rhus
Rhynchosia
Rhynchosida
Rhynchospora
Ribes
Richardia
Ricinus
Rivina
Robinia
Roldana
Romneya
Rorippa
Rosa
Rosaceae
Rosmarinus
Rotala
Rubiaceae
Rubus
Ruellia
Rumex
Russelia
Ruta
Rutaceae
Sabal
Sageretia
Sagittaria
Sairocarpus
Salazaria
Salicaceae
Salicornia
Salix
Salpianthus
Salsola
Salvia
Sambucus
Samolus
Sanicula
Santolina
Sanvitalia
Sapindaceae
Sapindus
Sapium
Saponaria
Sapotaceae
Sarcoglottis
Sarcostemma
Sassafridium
Saururaceae
Saxifraga
Saxifragaceae
Schaefferia
Schiedeella
Schinus
Schismus
Schistophragma
Schizachyrium
Schizocarpum
Schkuhria
Schoenocaulon
Schoenocrambe
Schoenoplectus
Schoepfia
Scirpus
Scleria
Sclerocactus
Sclerocarpus
Scleropogon
Scrophularia
Scrophulariaceae
Scutellaria
Sebastiania
Secale
Sedum
Selaginella
Selaginellaceae
Selenicereus
Senecio
Senna
Serjania
Sesamum
Sesbania
Sesuvium
Setaria
Setariopsis
Seymeria
Sibara
Sicyos
Sicyosperma
Sida
Sidalcea
Sidastrum
Sideroxylon
Silene
Silybum
Simaroubaceae
Simmondsia
Simmondsiaceae
Simsia
Sinapis
Siphonoglossa
Sisymbrium
Sisyrinchium
Smallanthus
Smilacaceae
Smilax
Solanaceae
Solanum
Solidago
Sonchus
Sophora
Sorbus
Sorghastrum
Sorghum
Spermacoce
Spermolepis
Sphaeralcea
Sphagnaceae
Sphagnum
Sphenopholis
Sphinctospermum
Spigelia
Spiranthes
Spirodela
Spondias
Sporobolus
Stachys
Stachytarpheta
Stanhopea
Stegnosperma
Stemmadenia
Stemodia
Stenandrium
Stenocereus
Stenorrhynchos
Stenotaphrum
Stephanomeria
Sterculiaceae
Stevia
Stillingia
Struthanthus
Stuckenia
Stylocline
Stylosanthes
Suaeda
Sympetaleia
Symphoricarpos
Symphyotrichum
Tabebuia
Tacitus
Tagetes
Talinum
Tamaricaceae
Tamarindus
Tamarix
Tauschia
Tecoma
Telosiphonia
Tephrosia
Tetrachondraceae
Tetraclea
Tetracoccus
Tetradymia
Tetramerium
Teucrium
Thalictrum
Thamnosma
Thelesperma
Thelypodiopsis
Thelypteridaceae
Thelypteris
Theophrastaceae
Thermopsis
Thevetia
Thlaspi
Thornbera
Thouinia
Thymophylla
Thysanocarpus
Tidestromia
Tigridia
Tilia
Tiliaceae
Tillandsia
Tinantia
Tithonia
Tomentaurum
Tournefortia
Trachypogon
Tradescantia
Tragia
Trianthema
Tribulus
Trichilia
Trichoptilium
Trichostema
Tridax
Tridens
Trifolium
Trigonospermum
Triodanis
Triphora
Tripogandra
Tripsacum
Trisetum
Triteleia
Triteleiopsis
Triticum
Tritonia
Triumfetta
Trixis
Tropaeolaceae
Tropaeolum
Trophis
Tumamoca
Turnera
Turneraceae
Typha
Typhaceae
Ulmaceae
Ulmus
Umbellularia
Ungnadia
Urera
Urochloa
Uropappus
Urtica
Urticaceae
Utricularia
Vaccinium
Valeriana
Valerianaceae
Vallesia
Vaseyanthus
Vauquelinia
Veratrum
Verbascum
Verbena
Verbenaceae
Verbesina
Vernonia
Veronica
Vicia
Vigna
Viguiera
Villadia
Viola
Violaceae
Viscaceae
Viscainoa
Vitaceae
Vitex
Vitis
Vulpia
Waltheria
Washingtonia
Wedelia
Wigandia
Wimmeria
Wislizenia
Wissadula
Woodsia
Woodsiaceae
Woodwardia
Xanthisma
Xanthium
Xanthocephalum
Xanthorrhoeaceae
Xanthosoma
Xylonagra
Xylosma
Xylothamia
Yabea
Yucca
Zamiaceae
Zannichellia
Zannichelliaceae
Zanthoxylum
Zapoteca
Zephyranthes
Zigadenus
Zinnia
Ziziphus
Zornia
Zygophyllaceae
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Please enter a checklist, taxonomic group, and then select 'Submit Criteria'
This key is still in the developmental phase. The application, data model, and actual data will need tuning. The key has been developed to minimize the exclusion of species due to the lack of data. The consequences of this is that a 'shrubs' selection may show non-shrubs until that information is corrected. User input is necessary for the key to improve! Please email me with suggestions, comments, or problems:
Note:
If few morphological characters are displayed for a particular checklist, it is likely due to not yet having enough morphological data compiled for that subset of species. If you would like to help, please email me at the above address.