Poaceae
Synonyms:
Gramineae [HC]
101 genera
329 species
107 subspecies and varieties
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Scientific name
Common name
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Achnatherum hendersonii
Origin: Native
Achnatherum hymenoides
Origin: Native
Achnatherum nevadense
Origin: Native
Achnatherum richardsonii
Origin: Native
Achnatherum thurberianum
Origin: Native
Aegilops cylindrica
Origin: Introduced from southern Europe
×Agropogon lutosus
Origin: Introduced
Agropyron cristatum
Origin: Introduced
Agropyron fragile
Origin: Introduced
Agrostis canina
Origin: Native
Agrostis capillaris
Origin: Introduced
Agrostis castellana
Origin: Introduced
Agrostis exarata
Origin: Native
Agrostis gigantea
Origin: Introduced
Agrostis idahoensis
Origin: Native
Agrostis mertensii
Origin: Native
Agrostis microphylla
Origin: Native
Agrostis ×murbeckii
Origin: Introduced
Agrostis oregonensis
Origin: Native
Agrostis pallens
Origin: Native
Agrostis scabra
Origin: Native
Agrostis stolonifera
Origin: Introduced?
Agrostis variabilis
Origin: Native
Aira caryophyllea
Origin: Introduced
Aira elegans
Origin: Introduced
Aira praecox
Origin: Introduced
Alopecurus arundinaceus
Origin: Introduced
Alopecurus carolinianus
Origin: Introduced
Alopecurus geniculatus
Origin: Native
Alopecurus myosuroides
Origin: Introduced
Alopecurus pratensis
Origin: Introduced from Europe
Alopecurus saccatus
Origin: Native
Ammophila arenaria
Origin: Introduced
Anthoxanthum aristatum
Origin: Introduced
Anthoxanthum odoratum
Origin: Introduced from Europe
Apera interrupta
Origin: Introduced
Apera spica-venti
Origin: Introduced
Aristida purpurea
Origin: Native
Avena barbata
Origin: Introduced
Avena fatua
Origin: Introduced
Avena sativa
Origin: Introduced
Beckmannia syzigachne
Origin: Native
Briza maxima
Origin: Introduced
Briza minor
Origin: Introduced from the Mediterranean region
Bromus arenarius
Origin: Introduced
Bromus briziformis
Origin: Introduced
Bromus ciliatus
Origin: Native
Bromus commutatus
Origin: Introduced
Bromus diandrus
Origin: Introduced
Bromus erectus
Origin: Introduced
Bromus hordeaceus
Origin: Introduced
Bromus inermis
Origin: Introduced
Bromus japonicus
Origin: Introduced
Bromus madritensis
Origin: Introduced
Bromus orcuttianus
Origin: Native
Bromus pacificus
Origin: Native
Bromus racemosus
Origin: Introduced
Bromus rubens
Origin: Introduced
Bromus secalinus
Origin: Introduced
Bromus squarrosus
Origin: Introduced
Bromus sterilis
Origin: Introduced
Bromus suksdorfii
Origin: Native
Bromus tectorum
Origin: Introduced
Bromus vulgaris
Origin: Native
Calamagrostis howellii
Origin: Native
Calamagrostis nutkaensis
Origin: Native
Calamagrostis rubescens
Origin: Native
Calamagrostis tacomensis
Origin: Native
Calamagrostis tweedyi
Origin: Native
Calamovilfa gigantea
Origin: Introduced
Calamovilfa longifolia
Origin: Introduced
Cenchrus longispinus
Origin: Introduced
Cinna latifolia
Origin: Native
Coix lacryma-jobi
Origin: Introduced from tropical Asia
Coleanthus subtilis
Origin: Native?
Cortaderia jubata
Origin: Introduced from northern South America
Cortaderia selloana
Origin: Introduced from central South America
Corynephorus canescens
Origin: Introduced
Crypsis alopecuroides
Origin: Introduced from n. Africa and Eurasia
Crypsis vaginiflora
Origin: Introduced from the western Mediterranean
Cynodon dactylon
Origin: Introduced
Cynosurus cristatus
Origin: Introduced
Cynosurus echinatus
Origin: Introduced
Dactylis glomerata
Origin: Introduced
Danthonia californica
Origin: Native
Danthonia decumbens
Origin: Introduced from Europe
Danthonia intermedia
Origin: Native
Danthonia spicata
Origin: Native
Danthonia unispicata
Origin: Native
Deschampsia cespitosa
Origin: Native
Deschampsia elongata
Origin: Native
Digitaria ischaemum
Origin: Introduced from Eurasia
Digitaria sanguinalis
Origin: Introduced from Eurasia
Distichlis spicata
Origin: Native
Echinochloa colona
Origin: Introduced from the tropics
Echinochloa crus-galli
Origin: Introduced from Eurasia
Eleusine indica
Origin: Introduced from Africa
Eleusine tristachya
Origin: Introduced
×Elyhordeum macounii
Origin: Native
×Elyleymus aristatus
Origin: Native
Elymus albicans
Origin: Native
Elymus curvatus
Origin: Native
Elymus ×hansenii
Origin: Native
Elymus hirsutus
Origin: Native
Elymus multisetus
Origin: Native
Elymus ×pseudorepens
Origin: Native
Elymus repens
Origin: Introduced
Elymus scribneri
Origin: Native
Elymus sierrae
Origin: Native
Elymus violaceus
Origin: Native
Elymus wawawaiensis
Origin: Native
Eragrostis cilianensis
Origin: Introduced from Europe
Eragrostis curvula
Origin: Introduced from southern Africa
Eragrostis hypnoides
Origin: Native
Eragrostis lutescens
Origin: Native
Eragrostis mexicana
Origin: Introduced
Eragrostis minor
Origin: Introduced from Europe
Eragrostis pilosa
Origin: Introduced
Eremopyrum triticeum
Origin: Introduced
Festuca campestris
Origin: Native
Festuca filiformis
Origin: Introduced from Europe
Festuca idahoensis
Origin: Native
Festuca occidentalis
Origin: Native
Festuca ovina
Origin: Introduced
Festuca roemeri
Origin: Native
Festuca rubra
Origin: Both native and introduced
Festuca subulata
Origin: Native
Festuca subuliflora
Origin: Native
Festuca trachyphylla
Origin: Introduced
Festuca valesiaca
Origin: Introduced
Festuca viridula
Origin: Native
Festuca washingtonica
Distribution: Occurring east of the Cascades crest in Washington;
Origin: Native
Glyceria borealis
Origin: Native
Glyceria canadensis
Origin: Introduced
Glyceria declinata
Origin: Introduced
Glyceria elata
Origin: Native
Glyceria fluitans
Origin: Introduced
Glyceria grandis
Origin: Native
Glyceria leptostachya
Origin: Native
Glyceria maxima
Origin: Introduced
Glyceria ×occidentalis
Origin: Native
Glyceria striata
Origin: Native
Graphephorum wolfii
Origin: Native
Hierochloe occidentalis
Origin: Native
Hierochloe odorata
Origin: Native
Holcus lanatus
Origin: Introduced
Holcus mollis
Origin: Introduced
Hordeum depressum
Origin: Native
Hordeum jubatum
Origin: Native
Hordeum marinum
Origin: Introduced
Hordeum pusillum
Origin: Native
Hordeum vulgare
Origin: Introduced
Koeleria macrantha
Origin: Native
Leersia oryzoides
Origin: Native
Leymus cinereus
Origin: Native
Leymus condensatus
Origin: Native
Leymus flavescens
Origin: Native
Leymus mollis
Origin: Native
Leymus racemosus
Origin: Introduced
Leymus triticoides
Origin: Native
Leymus ×vancouverensis
Origin: Native
Lolium multiflorum
Origin: Introduced
Lolium perenne
Origin: Introduced
Lolium temulentum
Origin: Introduced
Melica aristata
Origin: Native
Melica bulbosa
Origin: Native
Melica ciliata
Origin: Introduced
Melica fugax
Origin: Native
Melica harfordii
Origin: Native
Melica smithii
Origin: Native
Melica spectabilis
Origin: Native
Melica subulata
Origin: Native
Miscanthus sinensis
Origin: Introduced
Molinia caerulea
Origin: Introduced
Muhlenbergia andina
Origin: Native
Muhlenbergia asperifolia
Origin: Native
Muhlenbergia glomerata
Origin: Native
Muhlenbergia mexicana
Origin: Native
Muhlenbergia minutissima
Origin: Native
Muhlenbergia racemosa
Origin: Native
Nassella viridula
Origin: Native
Oryzopsis asperifolia
Origin: Native
Panicum capillare
Origin: Native
Panicum miliaceum
Origin: Introduced
Parapholis incurva
Origin: Introduced
Pascopyrum smithii
Origin: Native
Paspalum distichum
Origin: Native
Pennisetum glaucum
Origin: Introduced
Pennisetum setaceum
Origin: Introduced from the eastern Mediterranean
Phalaris arundinacea
Origin: Introduced
Phalaris canariensis
Origin: Introduced
Phalaris paradoxa
Origin: Introduced
Phleum alpinum
Origin: Native
Phleum pratense
Origin: Introduced
Piptatheropsis exigua
Origin: Native
Pleuropogon refractus
Origin: Native
Poa alpina
Origin: Native
Poa annua
Origin: Introduced
Poa arctica
Origin: Native
Poa bolanderi
Origin: Native
Poa bulbosa
Origin: Introduced
Poa compressa
Origin: Introduced
Poa confinis
Origin: Native
Poa curtifolia
Origin: Native
Poa fendleriana
Origin: Native
Poa glauca
Origin: Native
Poa howellii
Origin: Native
Poa infirma
Origin: Introduced
Poa interior
Origin: Native
Poa laxiflora
Origin: Native
Poa leibergii
Origin: Native
Poa leptocoma
Origin: Native
Poa lettermanii
Origin: Native
Poa macrantha
Origin: Native
Poa marcida
Origin: Native
Poa ×multnomae
Origin: Native
Poa nemoralis
Origin: Introduced
Poa nervosa
Origin: Native
Poa palustris
Origin: Introduced
Poa paucispicula
Origin: Native
Poa pratensis
Origin: Both native and introduced
Poa secunda
Origin: Native
Poa stenantha
Origin: Native
Poa suksdorfii
Origin: Native
Poa trivialis
Origin: Introduced
Poa wheeleri
Origin: Native
Podagrostis aequivalvis
Origin: Native
Podagrostis humilis
Origin: Native
Podagrostis thurberiana
Origin: Native
Polypogon australis
Origin: Introduced
Polypogon fugax
Origin: Introduced
Polypogon interruptus
Origin: Introduced
Polypogon maritimus
Distribution: Known from Klickitat County in WA;
Origin: Introduced
Polypogon monspeliensis
Origin: Introduced
Polypogon viridis
Origin: Introduced
Psathyrostachys juncea
Origin: Introduced
×Pseudelymus saxicola
Origin: Native
Pseudoroegneria spicata
Origin: Native
Puccinellia distans
Origin: Introduced
Puccinellia lemmonii
Origin: Native
Puccinellia maritima
Origin: Introduced
Puccinellia nutkaensis
Origin: Native
Puccinellia nuttalliana
Origin: Native
Puccinellia pumila
Origin: Native
Redfieldia flexuosa
Origin: Introduced from central United States
Sasa palmata
Origin: Introduced
Schedonorus arundinaceus
Origin: Introduced
Schedonorus pratensis
Origin: Introduced
Sclerochloa dura
Origin: Introduced
Scleropoa rigida
Origin: Introduced
Scribneria bolanderi
Origin: Native
Secale cereale
Origin: Introduced
Secale strictum
Origin: Introduced
Setaria faberi
Origin: Introduced from China
Setaria italica
Origin: Introduced from China
Setaria pumila
Origin: Introduced
Setaria verticillata
Origin: Introduced from Europe
Setaria viridis
Origin: Introduced from Eurasia
Sorghum bicolor
Origin: Introduced from Africa
Sorghum halepense
Origin: Introduced from Mediterranean
Spartina alterniflora
Origin: Introduced from the Atlantic coast of North America
Spartina anglica
Origin: Introduced from Europe
Spartina densiflora
Origin: Introduced from Chile
Spartina gracilis
Origin: Native
Spartina patens
Origin: Introduced from the Atlantic Coast of North America
Spartina pectinata
Origin: Native
Spartina ×townsendii
Origin: Introduced from Europe
Sphenopholis intermedia
Origin: Native
Sphenopholis obtusata
Origin: Native
Sporobolus airoides
Origin: Native
Sporobolus cryptandrus
Origin: Native
Taeniatherum caput-medusae
Origin: Introduced
Thinopyrum ponticum
Origin: Introduced
Tripidium ravennae
Origin: Introduced
Triplasis purpurea
Origin: Introduced
Trisetum canescens
Origin: Native
Trisetum cernuum
Origin: Native
Trisetum flavescens
Origin: Introduced
Trisetum spicatum
Origin: Native
Triticum aestivum
Origin: Introduced
Vahlodea atropurpurea
Origin: Native
Ventenata dubia
Origin: Introduced
Vulpia bromoides
Origin: Introduced
Vulpia microstachys
Origin: Native
Vulpia myuros
Origin: Introduced
Zea mays
Origin: Introduced
Zizania palustris
Origin: Introduced