Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium

 

Checklist » Poaceae
Poaceae   (Grass Family)

Notes:

Family Synonyms: (none)

Literature:
» Barkworth, M. E., K. M. Capels, S. Long, and M. B. Piep, eds. 2003. Flora of North America North of Mexico. Volume 25 Magnoliophyta: Commelinidae (in part): Poaceae, part 2. Oxford University Press, New York. 783 p.
» Hitchcock, A.S. 1950. Manual of the grasses of the United States. Misc. Publ. 200. USDA. (but title page says revised Feb., 1951!)

Family treatment authored by Michael Marsh, Peter F. Zika; last updated 8/3/2009 by David Giblin
 
Taxon (native species in boldface) # Synonyms Common Names
Achnatherum ×bloomeri (Boland.) Barkworth   [FNA24] 5 Indian ricegrass
Achnatherum hendersonii (Vasey) Barkworth   [FNA24] 2 Henderson's rice grass
Achnatherum hymenoides (Roemer & J.A. Schultes) Barkworth   [FNA24] 3 Indian rice grass
Achnatherum lemmonii (Vasey) Barkworth ssp. lemmonii    [FNA24] 2 Lemmon's needlegrass
Achnatherum nelsonii (Scribn.) Barkworth ssp. dorei (Barkworth & Maze) Barkworth   [FNA24] 5 Nelson's needlegrass
Achnatherum occidentale (Thurb. ex S. Wats.) Barkworth ssp. californicum (Merr. & Burtt-Davey ex Hall) Barkworth   [FNA24] 4 California needlegrass
Achnatherum occidentale (Thurb. ex S. Wats.) Barkworth ssp. pubescens (Vasey) Barkworth   [FNA24] 2 western needlegrass
Achnatherum richardsonii (Link) Barkworth   [FNA24] 1 Richardson's rice grass
Achnatherum thurberianum (Piper) Barkworth   [FNA24] 1 Thurber's rice grass
Aegilops cylindrica Host   [FNA24, H&C] 3 jointed goat grass
Aegilops triuncialis L. var. triuncialis    [FNA24] 0 barbed goatgrass
×Agropogon lutosus (Poir.) P. Fourn.   [FNA24] 1 perennial beardgrass
Agropyron cristatum (L.) Gaertn.   [FNA24, H&C] 2 crested wheatgrass
Agrostis capillaris L.   [FNA24] 5 colonial bent
Agrostis castellana Boiss. & Reut.   [FNA24] 0 Highland bent, dryland browntop
Agrostis exarata Trin.   [FNA24, H&C] 14 spiked bent
Agrostis gigantea Roth   [FNA24] 5 black bent
Agrostis idahoensis Nash   [FNA24, H&C] 3 Idaho bent
Agrostis mertensii Trin.   [FNA24] 7 northern bent
Agrostis microphylla Steud.   [FNA24, H&C] 2 small-leaf bent
Agrostis oregonensis Vasey   [FNA24, H&C] 0 Oregon bent
Agrostis pallens Trin.   [FNA24, H&C] 3 seashore bent
Agrostis scabra Willd.   [FNA24] 7 rough bent
Agrostis stolonifera L.   [FNA24] 6 spreading bent
Agrostis variabilis Rydb.   [FNA24, H&C] 0 alpine bent
Aira caryophyllea L. var. capillaris (Mert. & W.D.J. Koch) Mutel   [FNA24] 6 delicate hairgrass
Aira caryophyllea L. var. caryophyllea    [FNA24] 2 silver hairgrass
Aira praecox L.   [FNA24, H&C] 1 early silver-hair grass
Alopecurus aequalis Sobol. var. aequalis    [FNA24] 4 shortawn fescue
Alopecurus arundinaceus Poir.   [FNA24] 2 creeping meadow-foxtail
Alopecurus carolinianus Walt.   [FNA24, H&C] 2 tufted meadow-foxtail
Alopecurus geniculatus L.   [FNA24, H&C] 1 water fescue
Alopecurus myosuroides Huds.   [FNA24, H&C] 1 slender meadow-foxtail
Alopecurus pratensis L.   [FNA24, H&C] 0 field meadow-foxtail
Alopecurus saccatus Vasey   [FNA24, H&C] 1 Pacific meadow-foxtail
Ammophila arenaria (L.) Link ssp. arenaria    [FNA24] 1 European beach grass
Ammophila breviligulata Fern. ssp. breviligulata    [FNA24] 0 American beachgrass
Andropogon gerardii Vitman   [FNA25, H&C] 0 big bluestem
Anthoxanthum aristatum Boiss. ssp. aristatum    [FNA24] 3 small sweet vernal grass
Anthoxanthum hirtum (Schrank) Y. Schouten & Veldkamp   [FNA24] 4 hairy sweetgrass
Anthoxanthum occidentale (Buckl.) Veldkamp   [FNA24] 2 California sweetgrass
Anthoxanthum odoratum L.   [FNA24, H&C] 2 sweet vernalgrass
Apera interrupta (L.) Beauv.   [FNA24] 1 dense silky-bent
Aristida purpurea Nutt. var. longiseta (Steud.) Vasey   [FNA25] 3 red threeawn
Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl var. bulbosum (Willd.) Spenner   [FNA24, H&C] 2 bulbous oatgrass [Marsh]
Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl var. elatius    [FNA24, H&C] 2 bulbous oatgrass [Marsh]
Avena barbata Pott ex Link   [FNA24] 1 barbed oat
Avena fatua L.   [FNA24, H&C] 2 wild oat
Avena sativa L.   [FNA24, H&C] 3 oat
Beckmannia syzigachne (Steud.) Fern.   [FNA24, H&C] 5 American slough grass
Brachypodium sylvaticum (Huds.) P. Beauv.   [FNA] 0 false brome
Briza maxima L.   [FNA24] 0 big quakinggrass
Briza minor L.   [FNA24, H&C] 0 little quaking grass
Bromus aleutensis Trin. ex Griseb.   [FNA24] 1 Aleut brome
Bromus arenarius Labill.   [FNA24] 0 Australian brome
Bromus briziformis Fisch. & C.A. Mey.   [FNA24] 1 rattlesnake brome
Bromus carinatus Hook. & Arn. var. carinatus    [FNA24] 5 California brome
Bromus carinatus Hook. & Arn. var. marginatus Hitchc. ex Scoggan   [FNA24] 7 large mountain brome
Bromus catharticus Vahl var. elatus (E. Desv.) Planchuelo   [FNA24] 0 rescue grass
Bromus ciliatus L.   [FNA24, H&C] 7 fringed brome
Bromus commutatus Schrad.   [FNA24, H&C] 1 meadow brome
Bromus diandrus Roth   [FNA24] 5 ripgut grass, great brome
Bromus erectus Huds.   [FNA24, H&C] 1 upright brome
Bromus hordeaceus L. ssp. hordeaceus    [FNA24] 1 soft chess
Bromus inermis Leyss.   [FNA24] 2
Bromus japonicus Thunb. ex Murr.   [FNA24, H&C] 2 Japanese brome
Bromus madritensis L.   [Draft Revised H&C] 0 compact brome
Bromus orcuttianus Vasey   [FNA24, H&C] 2 chinook brome
Bromus pacificus Shear   [FNA24, H&C] 1 Pacific brome
Bromus pumpellianus Scribn. ssp. pumpellianus    [FNA24] 10 Arctic brome
Bromus racemosus L.   [FNA24] 1 bald brome
Bromus rubens L.   [FNA24, H&C] 2 fox-tail brome
Bromus secalinus L.   [FNA24, H&C] 2 rye brome
Bromus sitchensis Trin.   [FNA24, H&C] 1 Alaska brome
Bromus squarrosus L. var. squarrosus    [FNA24] 1 corn brome
Bromus sterilis L.   [FNA24, H&C] 1 poverty brome
Bromus suksdorfii Vasey   [FNA24, H&C] 1 Suksdorf's brome
Bromus tectorum L.   [FNA24, H&C] 4 cheat grass
Bromus vulgaris (Hook.) Shear   [FNA24] 4 Columbian brome
Calamagrostis canadensis (Michx.) Beauv. var. canadensis    [FNA24, H&C] 11 bluejoint reedgrass
Calamagrostis canadensis (Michx.) Beauv. var. langsdorfii (Link) Inman   [FNA24, H&C] 6 ?
Calamagrostis howellii Vasey   [FNA24, H&C] 0 Howell's reed grass
Calamagrostis koelerioides Vasey   [FNA24, H&C] 1 pineland reed grass
Calamagrostis nutkaensis (J. Presl) J. Presl ex Steud.   [FNA24, H&C] 1 Nootka reed grass
Calamagrostis purpurascens R. Br.   [FNA24] 7 purple reedgrass
Calamagrostis rubescens Buckl.   [FNA24, H&C] 1 pinegrass
Calamagrostis sesquiflora (Trin.) Tzvelev   [FNA24, H&C] 6 one-and-a-half-flower reed grass
Calamagrostis stricta (Timm) Koel. ssp. inexpansa (Gray) C.W. Greene   [FNA24] 21 narrow-spiked reedgrass
Calamagrostis stricta (Timm) Koel. ssp. stricta    [FNA24] 5 narrow-spiked reedgrass
Calamagrostis tacomensis K. Marr & Hebda   [FNA24] 1 Rainier reedgrass
Calamagrostis tweedyi (Scribn.) Scribn. ex Vasey   [FNA24, H&C] 0 Cascade reed grass
Calamovilfa longifolia (Hook.) Scribn. var. longifolia    [FNA24] 1 prairie sandgrass or prairie sandreed
Cenchrus longispinus (Hack.) Fernald   [FNA25, H&C] 1 mat sandbur, longspine sandbur
Cenchrus spinifex Cav.   [FNA25] 1 coastal or common sandbur
Cinna latifolia (Trev. ex Goepp.) Griseb.   [FNA24, H&C] 0 slender wood-reed
Coix lacryma-jobi L.   [FNA25] 0 Job's-tears
Coleanthus subtilis (Tratt.) Seidel   [FNA24, H&C] 0 moss grass
Cortaderia jubata (Lemoine ex CarriÃ…re) Stapf   [FNA25] 0 purple pampas grass
Cortaderia selloana (Schult. & Schult. f.) Asch. & Graebn.   [FNA25] 1 pampas grass
Corynephorus canescens (L.) Beauv.   [FNA24, H&C] 1 gray club-awn grass
Crypsis alopecuroides (Piller & Mitterp.) Schrad.   [FNA25] 1 foxtail pricklegrass
Crypsis vaginiflora (Forssk.) Opiz   [FNA25] 0 modest pricklegrass
Cynodon dactylon (L.) Pers.   [FNA25, H&C] 2 bermuda grass
Cynosurus cristatus L.   [FNA24, H&C] 0 crested dogtail
Cynosurus echinatus L.   [FNA24, H&C] 0 bristly dog's-tail grass
Dactylis glomerata L.   [FNA24, H&C] 3 orchard grass
Danthonia californica Bol.   [FNA25, H&C] 4 California oatgrass
Danthonia decumbens (L.) DC.   [FNA25] 2 mountain or common heath-grass
Danthonia intermedia Vasey   [FNA25, H&C] 2 timber oatgrass
Danthonia spicata (L.) P. Beauv. ex Roem. & Schult.   [FNA25] 3 poverty oatgrass
Danthonia unispicata (Thurb.) Munro ex Vasey   [FNA25, H&C] 0 one-spike or few-flower oatgrass
Deschampsia cespitosa (L.) Beauv. ssp. beringensis (Hultén) W.E. Lawrence   [FNA24] 2 Beringian hairgrass
Deschampsia cespitosa (L.) Beauv. ssp. cespitosa    [FNA24] 15 tufted hair grass
Deschampsia cespitosa (L.) Beauv. ssp. holciformis (J. Presl) W.E. Lawrence   [FNA24] 3 tufted hairgrass
Deschampsia danthonioides (Trin.) Munro   [FNA24, H&C] 3 annual hair grass
Deschampsia elongata (Hook.) Munro   [FNA24, H&C] 1 slender hair grass
Desmazeria rigida (L.) Tutin   [FNA24] 3 fern grass
Dichanthelium acuminatum (Sw.) Gould & C.A. Clark ssp. fasciculatum (Torr.) Freckmann & Lelong   [FNA25] 6 hairy panicgrass
Dichanthelium oligosanthes (Schult.) Gould ssp. scribnerianum (Nash) Freckmann & Lelong   [FNA25] 6 Scribner's panicgrass or witchgrass
Digitaria ischaemum (Schreb.) Schreb. ex Muhl.   [FNA25, H&C] 3 smooth crabgrass
Digitaria sanguinalis (L.) Scop.   [FNA25, H&C] 2 hairy crabgrass
Distichlis spicata (L.) Greene   [FNA25, H&C] 9 coastal salt grass, alkaline grass
Echinochloa colona (L.) Link   [FNA25] 1 awnless barnyard grass, or jungle-rice
Echinochloa crus-galli (L.) P. Beauv.   [FNA25, H&C] 3 barnyard grass, or large barnyard grass
Echinochloa crus-pavonis (Kunth) Schult. var. crus-pavonis    [FNA25] 0 gulf barnyard grass
Echinochloa muricata (P. Beauv.) Fernald var. microstachya Wiegand   [FNA25] 4 American barnyard grass, or watergrass
Eleusine indica (L.) Gaertn.   [FNA25, H&C] 0 goosegrass
×Elyhordeum macounii (Vasey) Barkworth & D.R. Dewey   [FNA24] 4
×Elyhordeum stebbinsianum (Bowden) Bowden   [FNA24] 3
Elymus albicans (Scribn. & J.G. Sm.) A. Löve   [FNA24] 10 Montana wild rye
Elymus bakeri (E. Nels.) A. Löve   [FNA24] 4 Baker's wild rye
Elymus canadensis L. var. canadensis    [FNA24] 6 nodding wild rye
Elymus curvatus Piper   [FNA24] 4 awnless wildrye
Elymus elymoides (Raf.) Swezey ssp. californicus (J.G. Sm.) Barkworth   [FNA24] 1 California squirreltail
Elymus elymoides (Raf.) Swezey ssp. elymoides    [FNA24] 3 bottlebrush squirreltail
Elymus elymoides (Raf.) Swezey ssp. hordeoides (Suksdorf) Barkworth   [FNA24] 3 bottlebrush squirreltail
Elymus glaucus Buckl. ssp. glaucus    [FNA24] 4 blue wildrye
Elymus glaucus Buckl. ssp. virescens (Piper) Gould   [FNA24] 2 blue wildrye
Elymus ×hansenii Scribn. (pro sp.)   [FNA24] 3
Elymus hirsutus J. Presl   [FNA24, H&C] 0 boreal wild rye
Elymus lanceolatus (Scribn. & J.G. Sm.) Gould ssp. lanceolatus    [FNA24] 5 thick-spiked wheatgrass
Elymus lanceolatus (Scribn. & J.G. Sm.) Gould ssp. psammophilus (J.M. Gillett & H. Senn) Á. Löve   [FNA24] 1 sand-dune wheatgrass
Elymus multisetus (J.G. Sm.) Burtt Davy   [FNA24] 1 big squirreltail
Elymus ×pseudorepens (Scribn. & J.G. Sm.) Barkworth & D.R. Dewey   [FNA24] 6 false quackgrass
Elymus repens (L.) Gould   [FNA24] 7 creeping wild rye
Elymus scribneri (Vasey) M.E. Jones   [FNA24] 1 Scribner's wild rye
Elymus sierrae Gould   [FNA24] 1 Sierra wheatgrass
Elymus trachycaulus (Link) Gould ex Shinners ssp. trachycaulus    [FNA24] 23 bearded wheatgrass
Elymus violaceus (Hornem.) Feilberg   [FNA24] 10 Arctic wheatgrass
Elymus wawawaiensis J. Carlson & Barkworth   [FNA24] 0 wawawai wild rye
Eragrostis cilianensis (All.) Vignolo ex Janch.   [FNA25, H&C] 3 stinkgrass
Eragrostis curvula (Schrad.) Nees   [FNA25] 0 weeping lovegrass
Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb.   [FNA25, H&C] 1 teal love grass
Eragrostis lutescens Scribn.   [FNA25, H&C] 0 six-weeks love grass
Eragrostis mexicana (Hornem.) Link ssp. virescens (J. Presl) S.D. Koch & Sçnchez Vega   [FNA25] 2 Mexican or orcutt's lovegrass
Eragrostis minor Host   [FNA25] 2 little lovegrass
Eragrostis pectinacea (Michx.) Nees ex Steud. var. pectinacea    [FNA25] 5 tufted or purple eragrostis
Eragrostis pilosa (L.) P. Beauv. var. pilosa    [FNA25] 3 India lovegrass
Eremopyrum triticeum (Gaertn.) Nevski   [FNA24] 2 annual false wheat grass
Festuca brachyphylla J.A. Schultes ex J.A. & J.H. Schultes ssp. brachyphylla    [FNA24] 8 alpine fescue
Festuca campestris Rydb.   [FNA24] 3 prairie fescue
Festuca filiformis Pourret   [FNA24] 4 fine-leaf sheep fescue
Festuca idahoensis Elmer   [FNA24] 7 bluebunch fescue
Festuca occidentalis Hook.   [FNA24, H&C] 1 western fescue
Festuca ovina L.   [FNA24] 0 sheep fescue
Festuca roemeri (Pavlick) Alexeev   [FNA24] 1 Roemer's fescue
Festuca rubra L. ssp. mediana (Pavlick) Pavlick   [FNA24] 0 dune red fescue
Festuca rubra L. ssp. pruinosa (Hack.) Piper   [FNA24] 0 rock fescue
Festuca rubra L. ssp. rubra    [FNA24] 3 red fescue
Festuca rubra L. ssp. secunda (J. Presl) Pavlick   [FNA24] 2 red fescue
Festuca saximontana Rydb. var. purpusiana (St.-Yves) Frederiksen & Pavlick   [FNA24] 2 sheep fescue
Festuca saximontana Rydb. var. saximontana    [FNA24] 3 sheep fescue
Festuca subulata Trin.   [FNA24, H&C] 0 bearded fescue
Festuca subuliflora Scribn.   [FNA24, H&C] 0 crinkle-awn fescue
Festuca trachyphylla (Hack.) Krajina   [FNA24] 6 hard fescue
Festuca valesiaca Schleicher ex Gaudin   [FNA24] 0 Valais fescue
Festuca viridula Vasey   [FNA24, H&C] 0 green-leaf fescue
Festuca washingtonica Alexeev   [FNA24] 0 Washington fescue
Glyceria borealis (Nash) Batchelder   [FNA24, H&C] 1 small floating manna grass
Glyceria canadensis (Michx.) Trin. var. canadensis    [FNA24] 1 rattlesnake manna grass
Glyceria declinata Bréb.   [FNA24] 0 low glyceria
Glyceria elata (Nash ex Rydb.) M.E. Jones   [FNA24, H&C] 0 tall mannagrass
Glyceria grandis S. Wats. var. grandis    [FNA24] 3 reed mannagrass
Glyceria leptostachya Buckl.   [FNA24, H&C] 1 slender-spike manna grass
Glyceria maxima (Hartm.) Holmb   [FNA24] 0 tall mannagrass
Glyceria ×occidentalis (Piper) J.C. Nels.   [FNA24, H&C] 0 northwestern manna grass
Glyceria striata (Lam.) A.S. Hitchc.   [FNA24, H&C] 5 fowl manna grass
Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. comata    [FNA24] 2 needle and thread
Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. intermedia (Scribn. & Tweedy) Barkworth   [FNA24] 3 Tweedy's needlegrass
Holcus lanatus L.   [FNA24, H&C] 1 common velvet grass
Holcus mollis L. ssp. mollis    [FNA24, H&C] 1 creeping velvet grass
Hordeum brachyantherum Nevski ssp. brachyantherum    [FNA24] 8 meadow barley
Hordeum depressum (Scribn. & J.G. Sm.) Rydb.   [FNA24, H&C] 1 dwarf barley
Hordeum jubatum L. ssp. jubatum    [FNA24] 1 foxtail barley
Hordeum marinum Huds. ssp. gussonianum (Parl.) Thellung   [FNA24] 6 mediterranean barley
Hordeum murinum L. ssp. glaucum (Steud.) Tzvelev   [FNA24] 5 mouse barley
Hordeum murinum L. ssp. leporinum (Link) Arcang.   [FNA24] 3 mouse barley
Hordeum murinum L. ssp. murinum    [FNA24] 2 mouse barley
Hordeum pusillum Nutt.   [FNA24, H&C] 2 little barley
Hordeum vulgare L. ssp. vulgare    [FNA24] 5 common barley
Koeleria macrantha (Ledeb.) J.A. Schultes   [FNA24] 7 prairie Koeler's grass
Leersia oryzoides (L.) Sw.   [FNA24, H&C] 2 rice cut grass
Leptochloa fusca (L.) Kunth ssp. fascicularis (Lam.) N. Snow   [FNA24] 7 bearded sprangletop
Leymus cinereus (Scribn. & Merr.) A. Löve   [FNA24] 5 Great Basin lyme grass
Leymus flavescens (Scribn. & J.G. Sm.) Pilger   [FNA24] 3 sand lyme grass
Leymus mollis (Trin.) Pilger ssp. mollis    [FNA24] 6 yellow ryegrass
Leymus racemosus (Lam.) Tzvelev   [FNA24] 4 mammoth lyme grass
Leymus triticoides (Buckl.) Pilger   [FNA24] 4 beardless lyme grass
Leymus ×vancouverensis (Vasey) Pilger (pro sp.)   [FNA24] 4 Vancouver wildrye
Lolium multiflorum Lam.   [FNA24, H&C] 7 annual ryegrass, Italian ryegrass
Lolium perenne L.   [FNA24, H&C] 2 perennial ryegrass, English ryegrass
Lolium temulentum L. ssp. temulentum    [FNA24] 4 darnel
Melica aristata Thurb. ex Boland.   [FNA24, H&C] 0 bearded melic grass
Melica bulbosa Geyer ex Porter & Coult.   [FNA24] 7 onion grass
Melica fugax Boland.   [FNA24, H&C] 3 small melic grass
Melica harfordii Boland.   [FNA24, H&C] 1 Harford's melic grass
Melica smithii (Porter ex Gray) Vasey   [FNA24, H&C] 2 Smith's melic grass
Melica spectabilis Scribn.   [FNA24, H&C] 2 showy melic grass
Melica subulata (Griseb.) Scribn.   [FNA24] 0 Alaska oniongrass
Molinia caerulea (L.) Moench   [FNA24] 0 purple moor grass
Muhlenbergia andina (Nutt.) Hitchc.   [FNA25, H&C] 1 foxtail muhly
Muhlenbergia asperifolia (Nees & Meyen ex Trin.) Parodi   [FNA25, H&C] 1 scratchgrass, or alkali muhly
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb.   [FNA25, H&C] 3 pull-up muhly
Muhlenbergia glomerata (Willd.) Trin.   [FNA24, H&C] 3 spiked muhly
Muhlenbergia mexicana (L.) Trin.   [Jepson, 2nd Edition] 7 wirestem muhly
Muhlenbergia minutissima (Steud.) Swallen   [FNA24, H&C] 3 least or annual muhly
Muhlenbergia racemosa (Michx.) B.S.P.   [FNA24, H&C] 1 green muhly
Muhlenbergia richardsonis (Trin.) Rydb.   [FNA24, H&C] 2 matted muhly
Oryzopsis asperifolia Michx.   [FNA24, H&C] 0 white-grain mountain-rice grass
Panicum capillare L. ssp. capillare    [FNA24] 3 witchgrass, or common panicgrass
Panicum dichotomiflorum Michx. ssp. dichotomiflorum    [FNA24] 3 fall panicum, western witchgrass
Panicum miliaceum L. ssp. miliaceum    [FNA24] 1 broomcorn, proso or hog millet, panic millet
Panicum miliaceum L. ssp. ruderale (Kitag.) Tzvelev   [FNA24] 1 broomcorn, hog millet, panic millet
Pascopyrum smithii (Rydb.) A. Löve   [FNA24] 7 western-wheat grass
Paspalum distichum L.   [FNA25, H&C] 3 knotgrass, Thompsongrass
Pennisetum glaucum (L.) R. Br.   [FNA25] 1 pearl millet
Phalaris arundinacea L.   [FNA24, H&C] 3 reed canary grass
Phalaris canariensis L.   [FNA24, H&C] 0 common canary grass
Phalaris paradoxa L.   [FNA24, H&C] 1 mediterranean canary grass
Phleum alpinum L.   [FNA24, H&C] 3 mountain Timothy
Phleum pratense L. ssp. pratense    [FNA24] 4 common Timothy
Phragmites australis (Cav.) Trin. ex Steud. ssp. americanus Saltonstall, P.M. Peterson, & Soreng   [FNA25] 0 common reed
Phragmites australis (Cav.) Trin. ex Steud. ssp. australis    [FNA25] 3 common reed
Piptatheropsis exigua (Thurb.) Romasch., P.M. Peterson & Soreng   [Draft Revised H&C] 2 little mountain-ricegrass
Pleuropogon refractus (Gray) Benth. ex Vasey   [FNA24, H&C] 1 nodding false semaphore grass
Poa alpina L. ssp. alpina    [FNA24] 1 alpine blue grass
Poa annua L.   [FNA24, H&C] 2 annual blue grass
Poa bolanderi Vasey   [FNA24, H&C] 1 Bolander's blue grass
Poa bulbosa L. ssp. vivipara (Koel.) Arcang.   [FNA24] 1 bulbous blue grass
Poa compressa L.   [FNA24, H&C] 0 flat-stem blue grass
Poa confinis Vasey   [FNA24, H&C] 0 coastline blue grass
Poa curtifolia Scribn.   [FNA24, H&C] 0 little mountain blue grass
Poa cusickii Vasey ssp. cusickii    [FNA24] 2 Cusick's bluegrass
Poa cusickii Vasey ssp. epilis (Scribn.) W.A. Weber   [FNA24] 2 skyline bluegrass
Poa cusickii Vasey ssp. pallida Soreng   [FNA24] 0 Cusick's bluegrass
Poa cusickii Vasey ssp. purpurascens (Vasey) Soreng   [FNA24] 1 Cusick's bluegrass
Poa fendleriana (Steud.) Vasey ssp. longiligula (Scribn. & Williams) Soreng   [FNA24] 3 muttongrass
Poa glauca Vahl ssp. rupicola (Nash ex Rydb.) W.A. Weber   [FNA24, H&C] 2 timberline bluegrass
Poa howellii Vasey & Scribn.   [FNA24, H&C] 2 Howell's blue grass
Poa interior Rydb.   [FNA24] 2 interior bluegrass
Poa laxiflora Buckl.   [FNA24, H&C] 0 loose-flower blue grass
Poa leibergii Scribn.   [FNA24, H&C] 1 Leiberg's blue grass
Poa leptocoma Trin.   [FNA24, H&C] 0 marsh blue grass
Poa lettermanii Vasey   [FNA24, H&C] 2 Letterman's blue grass
Poa macrantha Vasey   [FNA24, H&C] 2 sand-dune blue grass
Poa marcida A.S. Hitchc.   [FNA24, H&C] 1 withered blue grass
Poa nemoralis L.   [FNA24, H&C] 0 woodland bluegrass
Poa nervosa (Hook.) Vasey   [FNA24, H&C] 0 Hooker's blue grass
Poa palustris L.   [FNA24, H&C] 4 fowl blue grass
Poa paucispicula Scribn. & Merr.   [FNA24] 3 Alaska blue grass
Poa pratensis L. ssp. pratensis    [FNA24] 3 kentucky blue grass
Poa secunda J. Presl ssp. juncifolia (Scribn.) Soreng   [FNA24] 6 alkali bluegrass, big bluegrass, Nevada bluegrass
Poa secunda J. Presl ssp. secunda    [FNA24] 17 curly blue grass
Poa stenantha Trin. var. stenantha    [FNA24, H&C] 1 narrow-flower blue grass
Poa suksdorfii (Beal) Vasey ex Piper   [FNA24, H&C] 0 western blue grass
Poa trivialis L.   [FNA24, H&C] 0 rough-stalk blue grass
Poa unilateralis Scribn. ssp. pachypholis (Piper) D. D. Keck ex Soreng   [FNA24] 1 San Francisco blue grass
Poa wheeleri Vasey   [FNA24] 1 Wheeler's blue grass
Podagrostis aequivalvis (Trin.) Scribn. & Merr.   [FNA24] 1 Arctic bent
Podagrostis humilis (Vasey) Bj÷rkman   [FNA24] 1 alpine bent
Podagrostis thurberiana (A.S. Hitchc.) Hultén   [FNA24] 1 Thurber's bent
Polypogon australis Brongn.   [FNA24, H&C] 0 Chilean rabbit's-foot grass
Polypogon interruptus Kunth   [FNA24, H&C] 1 ditch rabbit's-foot grass
Polypogon monspeliensis (L.) Desf.   [FNA, H&C] 1 annual rabbit's-foot grass
Polypogon viridis (Gouan) Breistr.   [FNA24] 4 beardless rabbit's-foot grass
Psathyrostachys juncea (Fisch.) Nevski   [FNA24] 2 Russian-wild rye
×Pseudelymus saxicola (Scribn. & J.G. Sm.) Barkworth & D.R. Dewey   [FNA24, H&C] 3
Pseudoroegneria spicata (Pursh) Á. Löve   [FNA24] 10 bluebunch wheatgrass
Puccinellia distans (Jacq.) Parl.   [FNA24] 6 European alkali grass
Puccinellia lemmonii (Vasey) Scribn.   [FNA24, H&C] 0 Lemmon's alkali grass
Puccinellia nutkaensis (J. Presl) Fern. & Weatherby   [FNA24, H&C] 6 Nootka alkali grass
Puccinellia nuttalliana (J.A. Schultes) A.S. Hitchc.   [FNA24, H&C] 2 Nuttall's alkali grass
Puccinellia pumila (Vasey) A.S. Hitchc.   [FNA24, H&C] 5 dwarf alkali grass
Redfieldia flexuosa (Thurb. ex A. Gray) Vasey   [FNA25] 0 blowout grass
Sasa palmata (hort. ex Burb.) E.G. Camus 0 broadleaf bamboo
Schedonorus arundinaceus (Schreb.) Dumort.   [FNA24] 4 tall fescue
Schedonorus pratensis (Huds.) P. Beauv.   [FNA24] 3 meadow fescue
Schizachyrium scoparium (Michx.) Nash var. scoparium    [FNA25] 1 little bluestem, broom beardgras, broom bluestem
Sclerochloa dura (L.) Beauv.   [FNA24, H&C] 1 common hard grass
Scribneria bolanderi (Thurb.) Hack.   [FNA24, H&C] 0 Scribner's grass
Secale cereale L.   [FNA24, H&C] 2 cultivated rye
Setaria faberi R. A. W. Herrm.   [FNA25] 0 Chinese foxtail
Setaria italica (L.) P. Beauv.   [FNA25] 0 foxtail millet, Italian bristlegrass
Setaria pumila (Poir.) Roem. & Schult. ssp. pallidefusca    [FNA25] 0 yellow foxtail, pigeon grass
Setaria pumila (Poir.) Roem. & Schult. ssp. pumila    [FNA25] 2 yellow foxtail
Setaria verticillata (L.) P. Beauv.   [FNA25, H&C] 3 hooked bristlegrass, rough bristlegrass
Setaria viridis (L.) Beauv. var. viridis    [FNA25] 4 green bristlegrass
Sorghum bicolor (L.) Moench   [FNA25] 1 sorghum
Sorghum halepense (L.) Pers.   [FNA25, H&C] 1 Johnson grass
Spartina alterniflora Loisel.   [FNA25, H&C] 2 smooth or saltwater cordgrass
Spartina anglica C.E. Hubb.   [FNA25, H&C] 0 English cordgrass
Spartina densiflora Brongn.   [FNA25] 0 Chilean cordgrass
Spartina gracilis Trin.   [FNA25, H&C] 0 alkali cordgrass
Spartina patens (Aiton) Muhl.   [FNA25] 2 saltmeadow cordgrass
Spartina pectinata Bosc ex Link   [FNA25, H&C] 2 prairie or freshwater cordgrass
Spartina ×townsendii H. Groves & J. Groves   [FNA25, H&C] 0 Townsend's cordgrass
Sphenopholis intermedia (Rydb.) Rydb.   [FNA24] 2 slender wedgescale
Sphenopholis obtusata (Michx.) Scribn.   [FNA24, H&C] 3 prairie wedgescale
Sporobolus airoides (Torr.) Torr.   [FNA25, H&C] 1 alkali-sacaton
Sporobolus compositus (Poir.) Merr. var. compositus    [FNA25] 3 rough dropseed
Sporobolus cryptandrus (Torr.) A. Gray   [FNA25, H&C] 4 sand dropseed
Sporobolus neglectus Nash   [FNA25, H&C] 1 small dropseed
Taeniatherum caput-medusae (L.) Nevski   [FNA24] 3 medusa-head
Thinopyrum intermedium (Host) Barkworth & D.R. Dewey ssp. barbulatum (Schur) Barkworth & D.R. Dewey   [FNA24] 1 pubescent wheatgrass
Thinopyrum intermedium (Host) Barkworth & D.R. Dewey ssp. intermedium    [FNA24] 9 intermediate wheatgrass
Thinopyrum ponticum (Podp.) Z.-W. Liu & R.-C. Wang   [FNA24] 8 Eurasian quack grass
Torreyochloa pallida (Torr.) Church var. pauciflora (J. Presl) J.I. Davis 8 weak alkaligrass
Tripidium ravennae (L.) H. Scholz    [Draft Revised H&C] 1 ravennagrass
Triplasis purpurea (Walter) Chapm. var. purpurea    [FNA25] 1 purple sandgrass
Trisetum canescens Buckl.   [FNA24, H&C] 4 tall false oat
Trisetum cernuum Trin.   [FNA24, H&C] 0 nodding Trisetum
Trisetum cernuum Trin.   [FNA24, H&C] 0 nodding Trisetum
Trisetum flavescens (L.) Beauv.   [FNA24, H&C] 1 yellow false oat
Trisetum spicatum (L.) Richter   [FNA24, H&C] 21 narrow false oat
Trisetum wolfii Vasey   [FNA24, H&C] 1 beardless false oat
Triticum aestivum L.   [FNA24, H&C] 5 bread wheat
Vahlodea atropurpurea (Wahlenb.) Fries ex Hartman   [FNA24] 10 arctic-hair grass
Ventenata dubia (Leers) Coss   [FNA24, H&C] 2 Ventenata
Vulpia bromoides (L.) S.F. Gray   [FNA24] 4 brome six-weeks grass
Vulpia microstachys (Nutt.) Munro   [FNA24] 24
Vulpia myuros (L.) K.C. Gmel.   [FNA24] 5 rat-tail six-weeks grass
Vulpia octoflora (Walt.) Rydb. var. hirtella (Piper) Henr.   [FNA24] 2 six-weeks fescue
Vulpia octoflora (Walt.) Rydb. var. octoflora    [FNA24] 3 six-weeks fescue
Zea mays L. ssp. mays    [FNA24] 1 corn, maize, Indian corn
Zizania palustris L. var. palustris    [FNA24] 2 northern wild rice


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