Family = Poaceae,
Displaying matches 1 - 50 of 196. Next page.
(= Oryzopsis hendersonii in Flora of the Pacific Northwest)
Densely tufted perennial, the culms semi-solid, terete, 1-3 dm. tall, smooth.
Distribution: Yakima and Kittitas counties in Washington; south to Jefferson County, Oregon.
Habitat: Dry, rocky, shallow soil, in sagebrush or ponderosa pine.
(= Oryzopsis hymenoides in Flora of the Pacific Northwest)
Strongly tufted perennial 3-6 dm. tall, the culms thick-walled, but hollow.
Distribution: East of the Cascades in Washington; British Columbia south to California, east to Alberta and the Dakotas and Texas.
Habitat: Grasslands, desert plains, and foothills, especially on rocky or sandy soil.
(= Stipa lemmonii in Flora of the Pacific Northwest)
Tufted perennial, the culms 2-7 dm. tall.
Distribution: Chiefly east of the Cascades in Washington; south-central British Columbia south to California, east to Montana and Arizona.
Habitat: Valleys to mid-elevations in the mountains, often in ponderosa pine forests.
(= Aegilops cylindrica in Flora of the Pacific Northwest)
Annuals with hollow culms 3-5 dm. tall.
Distribution: A weedy plant from Europe, introduced in much of western United States.
Habitat: Waste ground and roadsides; a troublesome weed in wheat.
Annual, branched from the base, the culms hollow, decumbent, 17-60 cm. tall.
Distribution: Introduced occasionally in western North America; native from Mediterranean to central Asia.
Habitat: Disturbed areas, roadsides, railroad beds
(= Agropyron cristatum in Flora of the Pacific Northwest)
Tufted perennial without rhizomes, 5-10 dm. tall.
Distribution: Introduced for forage purposes in many areas of western United States, becoming widely established.
Habitat: Dry, open areas.
(= Agrostis tenuis in Flora of the Pacific Northwest)
Perennial with both rhizomes and stolons, the culms 3-5 dm. tall.
Distribution: Common in northeast United States, and widespread in western United States; chiefly west of the Cascades in Washington.
Habitat: Common lawn and turf grass.
(= Agrostis exarata vars. exarata, monolepsis, Agrostis exarata ssp. minor, Agrostis longiligula in Flora of the Pacific Northwest)
Tufted perennial, the culms 2-12 dm. tall, usually erect, but occasionally decumbent.
Distribution: Widely distributed throughout Washington; Alaska south to California, east to Alberta, Nebraska and Texas.
Habitat: Moist areas, from near sea level to mid-elevations in the mountains.
(= Agrostis alba var. alba in Flora of the Pacific Northwest)
Rhizomatous perennial, also sometimes stoloniferous, the culms erect to decumbent, often to 12 dm. tall.
Distribution: Occurring throughout Washington; found in nearly all parts of North America.
Habitat: Disturbed sites, roadsides, edge of agricultural fields, mostly at low elevations.
(= Agrostis idahoensis in Flora of the Pacific Northwest)
(= Agrostis pallens, Agrostis diegoensis in Flora of the Pacific Northwest)
Perennial with long, wiry rhizomes, the culms somewhat tufted, erect, 1.5-3 dm. tall.
Distribution: Near the coast, Grays Harbor County, Washington south to San Francisco, California.
Habitat: Coastal sand dunes and immediately adjacent woods.
(= Agrostis scabra in Flora of the Pacific Northwest)
(= Agrostis alba vars. in Flora of the Pacific Northwest)
Stoloniferous perennial, also sometimes rhizomatous, the culms erect to decumbent, 5-8 dm. tall.
Distribution: West of the Cascades, Alaska south to California; also in Idaho, Utah and Colorado.
Habitat: Open areas, lowlands to moderate elevations in themountains.
(= Aira caryophyllea in Flora of the Pacific Northwest)
Delicate annuals, the culms 1 to several, 5-30 cm. tall, hollow, mostly glabrous.
Distribution: Introduced and common west of the Cascades, British Columbia to California
Habitat: A weed in moist to dry, gravelly soil
(= Aira praecox in Flora of the Pacific Northwest)
Delicate annuals, the culms 1 to several, 3-30 cm. tall, hollow, smooth or somewhat roughened.
Distribution: Introduced from southern Vancouver Island, British Columbia, south to California.
Habitat: Gravelly prairies, sea bluffs and dunes near the coast.
(= Alopecurus aequalis in Flora of the Pacific Northwest)
Tufted perennials, the culms 2-7 dm. tall, erect to decumbent and freely-rooting, especially when growing in standing water.
Distribution: Alaska east to Newfoundland, south to most of the United States; on both sides of the Cascades in the Pacific Northwest.
Habitat: Wet places, ofter submersed.
(= Alopecurus carolinianus in Flora of the Pacific Northwest)
(= Alopecurus geniculatus in Flora of the Pacific Northwest)
Tufted perennials, the culms 3-5 dm. tall, erect.
Distribution: Distributed on both sides of the Cascades in Washington; Alaska south to California, east to the Atlantic Coast in Canada.
Habitat: Wet places, often in standing water.
(= Alopecurus myosuroides in Flora of the Pacific Northwest)
Tufted annual, the culms 2-8 dm. tall, erect.
Distribution: Introduced in many parts of North America; occasional in Washington and Oregon.
Habitat: Wet places.
(= Alopecurus pratensis in Flora of the Pacific Northwest)
Stout, herbaceous perennial 30-90 cm. tall; often grows in clumps due to stolons that develop when the lower nodes of the culms (aerial stems) take root in the soil. Attachment of bent awn to base of lemma distinguishes A. pratensis from A. aequalis, another introduced species of this genus that grows in wet ares.
Distribution: Alaska to Newfoundland, south to Oregon, Idaho, Montana, Missouri, and New Jersey. Found on both sides of the Cascades in WA.
Habitat: Swampy areas in meadows, in irrigated fields, and along roadsides.
Culms in tufts up to 11 dm. tall, connected by tough, elongate rhizomes.
Distribution: Introduced along the Pacific coast from southeast Washington the California.
Habitat: Sandy beaches and dunes.
(= Anthoxanthum odoratum in Flora of the Pacific Northwest)
Tufted perennial, the culms 1-3 dm. tall, erect and hollow.
Distribution: Chiefly west of the Cascades, Alaska south to California, and in much of eastern Canada, and central and eastern United States.
Habitat: Lawns, pastures and wasteland, usually where moist.
(= Agrostis interrupta in Flora of the Pacific Northwest)
Tufted to single-stemmed, glabrous annual, the culms 1-4 dm. tall.
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia south to Oregon, east to Idaho and Montana.
Habitat: Dry wasteland and other disturbed areas in shrub-steppe and open coniferous forests.
Strongly tufted perennial, the stems 2-4 dm. tall.
Distribution: British Columbia and eastern Washington, east to the Dakotas, south to Oregon and Arizona.
Habitat: Desert plains and grasslands, into the foothills.
(= Arrhenatherum elatius in Flora of the Pacific Northwest)
Tall perennials, the culms hollow, 8-15 dm. tall, the bases enlarged, often rooting at the first few nodes, but erect, not rhizomatous.
Distribution: Introduced more commonly west of the Cascades, British Columbia south to California, east to Idaho and Montana.
Habitat: Meadows and pastures.
(= Avena barbata in Flora of the Pacific Northwest)
Annuals up to 1 m. tall, the culms hollow, glabrous or with a few long hairs.
Distribution: Introduced and common in southwest United States; occasional in Washington and western Oregon.
Habitat: Roadsides and waste land.
(= Avena fatua in Flora of the Pacific Northwest)
Annuals, the culms to 1 m. tall, hollow.
Distribution: Common introduction in most of western North America.
Habitat: A weed in grain fields, roadsides and waste ground.
(= Avena sativa in Flora of the Pacific Northwest)
Glabrous annuals, the culms to 2 m. tall in some varieties, hollow.
Distribution: Commonly cultivated throught the United States and Canada, occasionally escaping but usually not persisting.
Habitat: Roadsides and field margins.
(= Beckmannia syzigachne in Flora of the Pacific Northwest)
Robust annuals, scabrous but otherwise glabrous, the culms to 1 m. tall, hollow, erect, often stoloniferous.
Distribution: Alaska to California, east from the coast to Manitoba and the Great Lakes region
Habitat: Pond margins, marshes and ditches at low elevations
(= Bouteloua curtipendula in Flora of the Pacific Northwest)
Rhizomatous perennials forming open patches, the culms 4-8 dm. tall, solid, erect.
Distribution: Montana east to Maine, south to most of the United States, barely reaching the Pacific Northwest
Habitat: Plains to lower mountains, often on scablands or rocky slopes.
(taxon is not treated in Flora of the Pacific Northwest)
(= Briza minor in Flora of the Pacific Northwest)
Glabrous annual, the culms up to 5 dm. tall, hollow.
Distribution: Well established in Eastern North America; occasional on the West coast.
Habitat: Dry waste areas.
(= Bromus brizaeformis in Flora of the Pacific Northwest)
Annual, the culms mostly glabrous, 2-6 dm. tall, hollow
Distribution: Southern British Columbia south to California, east to Idaho and Montana; occasional in eastern United States.
Habitat: Waste ground, roadsides, and overgrazed areas.
Perennial, the culms 3-10 dm. tall, glabrous to pubescent.
Distribution: British Columbia south to Mexico, east to Rocky Mountains.
Habitat: Grasslands, meadows, and forest openings from sea level to subalpine.
(= Bromus ciliatus in Flora of the Pacific Northwest)
(= Bromus commutatus in Flora of the Pacific Northwest)
Annual, the culms 2-9 dm. tall, erect.
Distribution: Introduced chiefly east of the Cascades fromsouthern British Columbia to California, east to Montana and Colorado.
Habitat: Waste ground, meadows, roadsides.
Annual, the culms 4-8 dm. tall, usually glabrous.
Distribution: Introduced from British Columbia to Baja California, mostly west of the Cascades in Washington, but east to Idaho and Colorado.
Habitat: A weed of waste ground and along highways and railroads.
(= Bromus mollis in Flora of the Pacific Northwest)
Annual, the culms 2-7 dm. tall, usually soft-pubescent throughout.
Distribution: Common introduction from Alaska south to Baja California, east to Idaho and Montana.
Habitat: Waste ground, roadsides, dry hillsides.
(= Bromus inermis in Flora of the Pacific Northwest)
Strongly rhizomatous perennial, the culms 2-12 dm. tall.
Distribution: Alaska to California, east to Labrador and Vermont.
Habitat: Commonly used in hayfields and pastures; disturbed areas, old fields, meadows and streambanks from the lowlands to subalpine slopes.
(= Bromus japonicus in Flora of the Pacific Northwest)
Annual, the culms 2-5 dm. tall.
Distribution: East of the Cascades, southern British Columbia to California, east across Canada and most of eastern United States.
Habitat: Sagebrush desert and grasslands to lower mountain forests; often a weed of roadsides and waste land.
(= Bromus pacificus in Flora of the Pacific Northwest)
Distribution: West of the Cascades crest in Washington; Alaska south to Oregon.
Habitat: Meadows and forest openingsat low elevations, often near or along the coast.
(= Bromus inermis ssp. pumpellianus in Flora of the Pacific Northwest)
(= Bromus rubens in Flora of the Pacific Northwest)
Annual, the culms 1.5-4.5 dm. tall, finely pubescent just below the panicle.
Distribution: Chiefly east of the Cascades in Washington; central Washington south to California, east to Idaho, Utah and Arizona.
Habitat: Common weed on overgrazed land, waste areas.
(= Bromus secalinus in Flora of the Pacific Northwest)
(= Bromus sitchensis var. sitchensis in Flora of the Pacific Northwest)
Perennial, the culms 5-15 dm. tall, without rhizomes.
Distribution: Along or near the coast from Alaska south to northwest Oregon.
Habitat: Meadowland to subalpine streambanks and talus slopes.
Displaying matches 1 - 50 of 196. Next page.
