Brown galingale (Cyperus fuscus)
Origin: Introduced

Shaggy galinsoga (Galinsoga quadriradiata)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to Washington, east across southern Canada to central and eastern North America.
Habitat: Fields, roadsides, gardens, wastelots, and other disturbed areas at low elevations.
Origin: Introduced from Central and South America
Flowers: June-October

Cultivated garlic (Allium sativum)
Distribution: West of the Cascades in Washington.
Habitat: Disturbed areas near towns, cities, agricultural fields where cultivated.
Origin: Introduced
Flowers: May-July

Wild garlic (Allium vineale)
Distribution: Scattered localities throughout Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Flowers: June - August

Explorer's gentian (Gentiana calycosa)
Distribution: Occurring on both sides of the Cascades crest in the Cascades, Olympics and Blue Mountains of Washington; British Columbia to California, east to Alberta, Wyoming, and Utah.
Habitat: Subalpine to alpine meadows.
Origin: Native
Flowers: July-October

King's gentian (Gentiana sceptrum)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to northwest California.
Habitat: Bogs and wet places, especially along the coast, at low elevations.
Origin: Native
Flowers: July-September

Mt. bog gentian (Gentiana calycosa)
Distribution: Occurring on both sides of the Cascades crest in the Cascades, Olympics and Blue Mountains of Washington; British Columbia to California, east to Alberta, Wyoming, and Utah.
Habitat: Subalpine to alpine meadows.
Origin: Native
Flowers: July-October

Pleated gentian (Gentiana affinis)
Distribution: East of the Cascades in Washington; British Columbia south to California and Arizona.
Habitat: Damp soil and meadowlands, from the valleys and foothills to well up in the mountains.
Origin: Native
Flowers: July-September

Rocky Mtn. gentian (Gentiana affinis)
Distribution: East of the Cascades in Washington; British Columbia south to California and Arizona.
Habitat: Damp soil and meadowlands, from the valleys and foothills to well up in the mountains.
Origin: Native
Flowers: July-September

Slender gentian (Comastoma tenellum)
Distribution: Known only from Okanogan County in Washington; Alaska south to California, east to the northern Rocky Mountains; circumpolar.
Habitat: Alpine areas, typically where moist.
Origin: Native
Flowers: June-August

Swamp gentian (Gentiana douglasiana)
Distribution: Narrow distribution in Cascade and Olympic Mountains of Washington; Alaska south to Washington.
Habitat: Bogs and tundra.
Origin: Native
Flowers: July-September

Dovefoot geranium (Geranium molle)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana, also in the central U.S. and northeastern North America.
Habitat: Disturbed areas including roadsides, moist ground in waste places and lawns, prairies, balds, and forest edge.
Origin: Introduced from Europe
Flowers: April-September

Purple geranium (Geranium purpureum)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California.
Habitat: Roadsides, fields, lawns, wastelots, and other disturbed open areas at low elevation.
Origin: Introduced from Europe
Flowers: May-June

Spanish geranium (Geranium ibericum)
Origin: Introduced

Sticky purple geranium (Geranium viscosissimum)
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains..
Habitat: Moist meadows and slopes, and forest openings, from the foothills to the middle elevations.
Origin: Native
Flowers: May-July

White geranium (Geranium richardsonii)
Distribution: East of the Cascades in Washington; British Columbia south to southern California and New Mexico.
Habitat: Mostly in partial shade, from the lowlands to well up in the mountains.
Origin: Native
Flowers: June-August

Nettle-leaf giant-hyssop (Agastache urticifolia)
Distribution: East of the Cascades in Washington; British Columbia to California, east to Colorado.
Habitat: Dry open slopes and draws, foothills to mid-elevations in the mountains
Origin: Native
Flowers: May-August

Ballhead gilia (Ipomopsis congesta)
Distribution: Occurring on the eastern border of Washington; Washington south to California, east to the Great Plains.
Habitat: Dry, open areas at low to middle elevations.
Origin: Native
Flowers: June-July

Delicate gilia (Lathrocasis tenerrima)
Distribution: Known from Okanogan, Douglas, and Chelan counties in Washington; British Columbia south to California, east to Montana, Idaho, Wyoming, Utah and Nevada.
Habitat: Rocky outcroppings, Ponderosa pine forest openings, and montane shrub-steppe communities.
Origin: Native
Flowers: May-June

Great Basin gilia (Aliciella leptomeria)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Open, sandy and rocky areas in sagebrush steppe from low to middle elevations.
Origin: Native
Flowers: April-June

Scarlet gilia (Ipomopsis aggregata)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains, Oklahoma and Texas.
Habitat: Open or lightly wooded, drier meadows and rocky slopes, lowlands to fairly high elevations in the mountains.
Origin: Native
Flowers: May-August

Sinuate gilia (Gilia sinuata)
Distribution: Occurring east of the Cascades crest in Washington; Washington to southeast California, east to Idaho and Wyoming.
Habitat: Dry, open, and usually sandy places in the foothills and plains.
Origin: Native
Flowers: April-July

Lott's gily-flower (Aliciella lottiae)
Distribution: Occurring east of the Cascades crest in the south-central portion of Washington; Washington south to California, east to Idaho and Utah.
Habitat: Open, sandy areas in sagebrush-steppe at low to middle elevations.
Origin: Native
Flowers: April-June

Sand gily-flower (Aliciella leptomeria)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Open, sandy and rocky areas in sagebrush steppe from low to middle elevations.
Origin: Native
Flowers: April-June

Giraffehead (Lamium amplexicaule)
Distribution: Both sides of the Cascades in Washington; introduced and widespread in North America; Eurasia and North Africa.
Habitat: Weed in distrurbed areas, fields, lawns.
Origin: Introduced from Eurasia
Flowers: April-July

Yellow glandweed (Bellardia viscosa)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in south-central U.S.
Habitat: Roadsides, fields, pastures, ditches, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from Eurasia.
Flowers: June-August

Western globeflower (Trollius albiflorus)
Distribution: Chiefly in the Olympics and Cascades mountains of Washington; British Columbia to Washington, east to the Rocky Mountains.
Habitat: Subalpine and alpine wet meadows and slopes, blooming as the snow recedes.
Origin: Native
Flowers: May-August

Long-sepal globemallow (Iliamna longisepala)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Chelan and Douglas counties.
Habitat: From sagebrush desert to ponderosa pine forest openings at low elevations.
Origin: Native
Flowers: June-August

Streambank globemallow (Iliamna rivularis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Montana and Colorado.
Habitat: Somewhat moist areas, often along seasonal stream banks, foothills to forest openings at mid-elevations.
Origin: Native
Flowers: June-August

Beach morning glory (Calystegia soldanella)
Distribution: Occurring west of the Cascades crest along the coast in Washington; British Columbia to San Diego County, California.
Habitat: Coastal beaches and sand dunes, often extending down to the high tide level.
Origin: Native
Flowers: April-September

Gnome-plant (Hemitomes congestum)
Distribution: West of the Cascades in Washington; Vancouver Island and mainland British Columbia south to Monterey County, California.
Habitat: Rich humus in damp coniferous forests at mid-elevations in the mountains.
Origin: Native
Flowers: June-August

Tall goat-chicory (Agoseris ×elata)
Distribution: Occurring on both sides of the Cascades crest in Washington; south-central British Columbia to California.
Habitat: Meadows and open woods, from the valleys to middle elevations in the mountains.
Origin: Native
Flowers: June-July

Remarkable goatsbeard (Tragopogon mirus)
Distribution: Occurring east of the Cascades crest in south-central and eastern Washington; eastern Washington and adjacent western Idaho, also occurring in Arizona.
Habitat: Dry, open areas in the foothills.
Origin: Native
Flowers: May-June

Woolly goatsbeard (Tragopogon floccosus)
Distribution: Occurring east of the Cascades crest in eastern Washington, where known only from Whitman County. eastern Washington and adjacent western Idaho.
Habitat: Disturbed areas, fields, roadsides.
Origin: Introduced
Flowers: July-August

Slender godetia (Clarkia gracilis)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Fairly dry, open areas at low elevations.
Origin: Native
Flowers: June-July

Hairy goldaster (Heterotheca villosa)
Distribution: Widespread in Washington and Oregon, chiefly east of the Cascades; east to Michigan
Habitat: Open, sunny areas, often in sandy soil, low to moderate elevations
Origin: Native
Flowers: June-September

Mountain golden-pea (Thermopsis montana)
Distribution: Occurring on both sides of the Cascades crest in Washington, but only occurring in the far western and eastern counties; British Columbia to California, east to the Rocky Mountains.
Habitat: Sandy, well-drained soil to wet meadowland, low to moderate elevations.
Origin: Native
Flowers: May-July

Pacific golden-saxifrage (Chrysosplenium glechomifolium)
Distribution: West of the Cascades and mostly along the coast, British Columbia south to northwest California.
Habitat: Moist, usually swampy places, mostly at low elevations.
Origin: Native
Flowers: Late March - May

Cascade Canada goldenrod (Solidago elongata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Washington to California.
Habitat: Sandy or gravelly open areas or thickets at low to middle elevations.
Origin: Native
Flowers: July-September

Grass-leaved goldenrod (Euthamia graminifolia)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to Oregon, east to Idaho; native from the Great Plains to the Atlantic Coast.
Habitat: Lowland fields, lakeshores, and wastelots.
Origin: Introduced from central and eastern North America
Flowers: July-September

Northern goldenrod (Solidago multiradiata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, Nevada, and Arizona, east to the Rocky Mountains, Great Plains, Great Lakes region, and midwestern U.S.
Habitat: Mountain meadows and open slopes at high elevations
Origin: Native
Flowers: June-September

Sticky goldenrod (Solidago simplex)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Open, slightly moist areas from coastal dunes to alpine meadows.
Origin: Native
Flowers: June-September

Western Canada goldenrod (Solidago lepida)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Atlantic Coast.
Habitat: Dry to moist areas in meadows and riparian areas, from low to middle elevations.
Origin: Native
Flowers: July-October

Western goldentop (Euthamia occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Great Plains of the U.S.
Habitat: Stream and river banks, lake and pond margins, wetlands, and other moist areas at low to middle elevations.
Origin: Native
Flowers: July-October

Columbia goldenweed (Ericameria resinosa)
Distribution: Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho.
Habitat: Basalt cliffs and rock crevices in the plains and foothills, extending up to 6000 feet on the east slope of the Cascades.
Origin: Native
Flowers: July-September

Greene's goldenweed (Ericameria greenei)
Distribution: Occurring east of the Cascade crest in Washington; Washington to California, east to Idaho.
Habitat: Dry, rocky slopes and open forests from middle elevations to the subalpine.
Origin: Native
Flowers: July-August

Hairy goldenweed (Pyrrocoma hirta)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington, the mountains of northeast Oregon and adjacent Idaho, south to northeast California.
Habitat: Meadows and open or sparsely wooded slopes in the foothills to middle elevations in the mountains.
Origin: Native
Flowers: July-August

Large-flowered goldenweed (Pyrrocoma carthamoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Wyoming, and Nevada.
Habitat: Open hillsides, meadows and forest openings from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: July-August

Narrowleaf goldenweed (Nestotus stenophyllus)
Distribution: Occurring east of the Cascades crest in central Washington; Washington to California, east to Idaho and Nevada.
Habitat: Dry, rocky soil, often with sagebrush.
Origin: Native
Flowers: May-July

Palouse goldenweed (Pyrrocoma scaberula)
Distribution: Occurring in the southeastern corner of Washington; southeastern Washington to adjacent Oregon and Idaho.
Habitat: Grasslands and open hillsides at low to middle elevations.
Origin: Native
Flowers: July-August

Sticky goldenweed (Pyrrocoma hirta)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington, the mountains of northeast Oregon and adjacent Idaho, south to northeast California.
Habitat: Meadows and open or sparsely wooded slopes in the foothills to middle elevations in the mountains.
Origin: Native
Flowers: July-August

Coastal goldfields (Lasthenia minor)
Distribution: Occurring west of the Cascades crest in lowland western Washington, where known from a single collection in Skagit County; central California.
Habitat: Coastal balds and grasslands.
Origin: Native
Flowers: Arpril-May

Seaside goldfields (Lasthenia maritima)
Distribution: Occurring west of the Cascades crest along the coast in Washington; southern British Columbia to California.
Habitat: Coastal islands, headlands, and seabird nesting sites.
Origin: Native
Flowers: May-July

Fern-leaf goldthread (Coptis aspleniifolia)
Distribution: Occurring west of the Cascades crest in Washington; Alaska south along the coast to Washington.
Habitat: Moist woods and bogs at low elevations.
Origin: Native
Flowers: April-May

Oregon goldthread (Coptis laciniata)
Distribution: Occurring in the southwestern region of Washington; Washington south to California.
Habitat: Moist woods at low elevations.
Origin: Native
Flowers: April-August

Western goldthread (Coptis occidentalis)
Distribution: Occurring in the northeastern corner of Washington; Adjacent British Columbia east to Idaho and Montana.
Habitat: Moist woods.
Origin: Native
Flowers: April-May

Bristly black gooseberry (Ribes lacustre)
Distribution: Occurring in forested and mountainous areas on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, and eastern North America.
Habitat: Moist forests and stream banks to forestd slopes and subalpine ridges.
Origin: Native
Flowers: April-July

Coast black gooseberry (Ribes divaricatum)
Distribution: Occurring chiefly west of the Cascades crest in Washington and along the Columbia River Gorge; British Columbia south to California.
Habitat: Moist hillsides, prairies and open woods at low elevations.
Origin: Native
Flowers: April-May

Goodding's gooseberry (Ribes velutinum)
Distribution: Occurring in the southeastern corner of Washington; Washington south to California, east to Montana, Idaho, Nevada, Utah, and Arizona.
Habitat: Open areas in sagebrush-steppe and Ponderosa pine forests.
Origin: Native
Flowers: March-May

Lobb's gooseberry (Ribes lobbii)
Distribution: Occurring chiefly east of the Cascades crest in Washington, but occasionally found to the coast; British Columbia south to California.
Habitat: Lowland valleys to open forests at moderate elevations in the mountains.
Origin: Native
Flowers: April-June

Mountain gooseberry (Ribes montigenum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Subalpine to alpine ridges, talus slopes and rock crevices.
Origin: Native
Flowers: June-August

Snake River gooseberry (Ribes niveum)
Distribution: Occurring in the southeastern corner of Washington; Washington south to Oregon and Nevada, east to Idaho and Colorado.
Habitat: Usually in thickets along streams, but somedtimes on open hllsides.
Origin: Native
Flowers: April-May

Spring gooseberry (Ribes watsonianum)
Distribution: Chiefly east of the Cascades crest in Washington; British Columbia south to Oregon, east to Alberta.
Habitat: Forest openings in canyons and on ridges, mid-elevations in the mountains.
Origin: Native
Flowers: May-July

Swamp gooseberry (Ribes lacustre)
Distribution: Occurring in forested and mountainous areas on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, and eastern North America.
Habitat: Moist forests and stream banks to forestd slopes and subalpine ridges.
Origin: Native
Flowers: April-July

Western prickly gooseberry (Ribes montigenum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Subalpine to alpine ridges, talus slopes and rock crevices.
Origin: Native
Flowers: June-August

Berlandieri's goosefoot (Chenopodium berlandieri)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, riparian zones, wastelots, and other open areas at low to middle elevations.
Origin: Native
Flowers: August-October

Desert goosefoot (Chenopodium pratericola)
Origin: Native

Giant goosefoot (Chenopodiastrum simplex)
Distribution: Introduced in much of North America; British Columbia to California in the West.
Habitat: Weed of roadsides and waste areas.
Origin: Native
Flowers: June - September

Hybrid goosefoot (Chenopodium ×schulzeanum)
Origin: Native

Large seed goosefoot (Oxybasis macrosperma)
Origin: Introduced

Low goosefoot (Oxybasis chenopodioides)
Origin: Native
Flowers: June - August

Narrowleaf goosefoot (Chenopodium leptophyllum)
Distribution: East side of the Cascades, British Columbia to Baja California, east to the Mississippi Valley.
Habitat: Deserts and dry grasslands.
Origin: Native
Flowers: May - August

Nettleleaf goosefoot (Chenopodiastrum murale)
Distribution: Introduced throughout most of North America.
Habitat: Roadsides and waste areas.
Origin: Introduced
Flowers: May - August

Over's Goosefoot (Blitum hastatum)
Origin: Introduced?

Red goosefoot (Oxybasis chenopodioides)
Origin: Native
Flowers: June - August

Smooth goosefoot (Chenopodium subglabrum)
Origin: Native
Flowers: May - August

White goosefoot (Chenopodium strictum)
Origin: Introduced from Eurasia

Common gorse (Ulex europaeus)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in the eastern U.S.
Habitat: Roadsides, dry hillsides, fields, and other disturbed areas at low elevation.
Origin: Introduced from Europe
Flowers: April-September

European grape (Vitis vinifera)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to the Willamette Valley in western Oregon, also in Columbia River Gorge and Hells Canyon.
Habitat: Forest edge, fields, and other disturbed areas where escaping from cultivation.
Origin: Introduced from Europe
Flowers: June-July

Common grape-hyacinth (Muscari botryoides)
Origin: Introduced

Grape-hyacinth (Muscari neglectum)
Origin: Introduced from Europe

Common grapefern (Botrypus virginianus)
Distribution: Occurring chiefly west of the Cascades crest and in the northeastern counties in Washington; Alaska to California, east across most of North America to the Atlantic Coast; also in Eurasia.
Habitat: Moist woods and thickets, seldom in meadows, from valleys to middle elevations in the mountains.
Origin: Native

Leathery grapefern (Sceptridium multifidum)
Distribution: Occurring chiefly west of the Cascades crest and in the northeastern counties in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Open or shaded places, including meadows, wetland margins, and forest edge, from low elevations to the subalpine.
Origin: Native

Alaska blue grass (Poa paucispicula)
Origin: Native
Flowers: Late June - August

American slough grass (Beckmannia syzigachne)
Distribution: Alaska to California, east from the coast to Manitoba and the Great Lakes region
Habitat: Pond margins, marshes and ditches at low elevations
Origin: Native
Flowers: June - July

Annual false wheat grass (Eremopyrum triticeum)
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to Arizona, east to the Rocky Mountains and Great Plains.
Habitat: Dry wasteland, disturbed areas.
Origin: Introduced
Flowers: May-July

Annual rabbit's-foot grass (Polypogon monspeliensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Wet to dry waste areas, including vernal pools where the water is brackish.
Origin: Introduced
Flowers: May-August

Awnless barnyard grass (Echinochloa colona)
Origin: Introduced from the tropics

Bearded melic grass (Melica aristata)
Origin: Native
Flowers: June - July

Beardless rabbit's-foot grass (Polypogon viridis)
Origin: Introduced
Flowers: June - September

Blowout grass (Redfieldia flexuosa)
Origin: Introduced from central United States

Bristly dog's-tail grass (Cynosurus echinatus)
Distribution: Introduced in southwest British Columba and Oregon's Wilamette Valley, south into California; more common in central and eastern United States.
Habitat: Weed of waste places.
Origin: Introduced
Flowers: May - July

Cheat grass (Bromus tectorum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Baja California, Mexico, east across North America to the Atlantic Coast.
Habitat: Sagebrush desert, grasslands, prairies, meadows, balds, roadsides, wastelots, and other distrubed open areas from low to middle elevations.
Origin: Introduced from Europe
Flowers: March-June

Coastal salt grass (Distichlis spicata)
Distribution: Vancouver Island, British Columbia, south to California; also along the east coast of the United States from Canada to Florida and Texas.
Habitat: Coastal beaches and salt marshes.
Origin: Native
Flowers: June - September

Common canary grass (Phalaris canariensis)
Origin: Introduced
Flowers: June - August

Common velvet grass (Holcus lanatus)
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, east across much of North America to the Atlantic Coast.
Habitat: Balds, prairies, roadsides, meadows, lawns, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-July

Dwarf alkali grass (Puccinellia pumila)
Origin: Native
Flowers: June - August

Eurasian quack grass (Thinopyrum ponticum)
Distribution: Occurring in scattered locations in the southern portion of Washington; British Columbia south to California, east to the central portion of North America.
Habitat: Disturbed areas including roadsides, wastelots, and agricultural fields.
Origin: Introduced
Flowers: May-June

Fern grass (Scleropoa rigida)
Origin: Introduced
Flowers: June - July

Flat-stem blue grass (Poa compressa)
Distribution: Alaska east to Newfoundland, south to most of the United States; common in the Pacific Northwest.
Habitat: Waste ground, roadsides, and gardens to open woods and meadows, usually where moist.
Origin: Introduced
Flowers: June - August

Fowl manna grass (Glyceria striata)
Distribution: Alaska south to northern California, east to Newfoundland and Florida.
Habitat: Wet places, bogs, and mountain meadows.
Origin: Native
Flowers: May - July

Gray club-awn grass (Corynephorus canescens)
Origin: Introduced

Harford's melic grass (Melica harfordii)
Origin: Native
Flowers: Late May - July

Hooker's blue grass (Poa nervosa)
Origin: Native
Flowers: April - August

Johnson grass (Sorghum halepense)
Distribution: Introduced and established in much of the United States; rarely persistent in the Pacific Northwest.
Habitat: Waste ground, especially where moist.
Origin: Introduced from Mediterranean
Flowers: July - October

Koeler's prairie grass (Koeleria macrantha)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to northern Mexico, east across North America to the Atlantic Coast except in the southeastern U.S.
Habitat: Sagebrush deserts, prairies, and open forests to subalpine ridges, mostly on sandy to rocky soil.
Origin: Native
Flowers: May-July

Lemmon's alkali grass (Puccinellia lemmonii)
Origin: Native
Flowers: June - July

Little mountain blue grass (Poa curtifolia)
Origin: Native
Flowers: June - August

Loose-flower blue grass (Poa laxiflora)
Distribution: Southern Alaska south to the Olympic Peninsula of Washington and Multnomah, Clackamus and Benton Counties, Oregon.
Habitat: Moist woods to rocky, open slopes, from near sea level to lower elevations in the mountains.
Origin: Native
Flowers: June

Marsh blue grass (Poa leptocoma)
Origin: Native
Flowers: Late June - August

Mediterranean canary grass (Phalaris paradoxa)
Origin: Introduced
Flowers: June - August

Moss grass (Coleanthus subtilis)
Origin: Native?
Flowers: July - October

Nootka alkali grass (Puccinellia nutkaensis)
Origin: Native

Northwestern manna grass (Glyceria ×occidentalis)
Origin: Native
Flowers: May - June

Onion grass (Melica bulbosa)
Origin: Native
Flowers: May - July

Orchard grass (Dactylis glomerata)
Distribution: Distributed widely throughout Washington; distributed widely throughout North America.
Habitat: Disturbed areas such as meadows, fields, roadsides, and forest edges; common forage plant; also planted in logged areas in the mountains.
Origin: Introduced
Flowers: June-August

Pampas grass (Cortaderia selloana)
Distribution: Occurring in several counties west of the Cascades crest; Washington to California, in scattered states eastward to Atlantic Coast.
Habitat: Disturbed, open soil of wastelots, abandoned fields, and roadsides at low elevations, often near coast.
Origin: Introduced from central South America
Flowers: May-July

Purple-eyed grass (Olsynium douglasii)
Distribution: Widely distributed throughout Washington, but more common east of the Cascades crest; British Columbia to California, east to Idaho, Nevada, and Utah.
Habitat: Coastal bluffs, prairies, open rocky areas, oak and ponderosa pine woodlands, sagebrush and juniper desert, where moist in early spring.
Origin: Native
Flowers: March-June

Reed canary grass (Phalaris arundinacea)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America, except for extreme southern U.S., to the Atlantic Coast.
Habitat: Stream banks, meadows, fields, roadsides, irrigation ditches, and other disturbed open places from low elevations to nearly the subalpine.
Origin: Introduced from Europe
Flowers: June-July

Richardson's rice grass (Achnatherum richardsonii)
Origin: Native
Flowers: June - July

Rough-stalk blue grass (Poa trivialis)
Origin: Introduced
Flowers: May - July

Sand-dune blue grass (Poa macrantha)
Distribution: Southern Vancouver Island and the islands of Puget Sound, south along the coast to Mendocino County, California.
Habitat: Chiefly on sand dunes.
Origin: Native
Flowers: April - July

Shining alkali grass (Puccinellia nutkaensis)
Origin: Native

Showy melic grass (Melica spectabilis)
Distribution: Southern British Columbia south to northern California chiefly east of the Caascade crest, east to Montana and Colorado.
Habitat: Usually in moist, loamy soil in meadows and open parks in mountain forests, but also dry to wet meadowlands and open forests to subalpine ridges.
Origin: Native
Flowers: Late May - July

Slender hair grass (Deschampsia elongata)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to Alberta, Montana and New Mexico.
Habitat: Moist sandy or gravelly banks and slopes, and borders of streams and lakes.
Origin: Native
Flowers: June-July

Small floating manna grass (Glyceria borealis)
Distribution: Alaska east to Newfoundland, south to California and New Mexico.
Habitat: Swamps, wet meadows, and stream margins, often growing in 1-3 feet of water.
Origin: Native
Flowers: May - October

Smith's melic grass (Melica smithii)
Distribution: Slouthern British Columbia south to Oregon, east to Alberta and Wyoming.
Habitat: Moist woods.
Origin: Native
Flowers: June - August

Tall rye grass (Schedonorus arundinaceus)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout North America.
Habitat: Meadowlands, fallow fields an ditch banks.
Origin: Introduced
Flowers: May-July

Thurber's rice grass (Achnatherum thurberianum)
Origin: Native
Flowers: Late May - June

Western-wheat grass (Pascopyrum smithii)
Origin: Native
Flowers: June - August

White-grain mountain-rice grass (Oryzopsis asperifolia)
Distribution: British Columbia east to Newfoundland, south to Maine and Montana and the northeast portion of Washington.
Habitat: Open coniferous woods.
Origin: Native
Flowers: May - July

Woods blue grass (Poa interior)
Origin: Native

Fringed Grass-of-Parnassus (Parnassia fimbriata)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska to California, east to Alberta, Montana and New Mexico.
Habitat: Bogs, stream banks and wet meadows, mid- to high elevations in the mountains.
Origin: Native
Flowers: July-September

Kotzebue's Grass-of-Parnassus (Parnassia kotzebuei)
Distribution: Known only from Okanogan and Chelan counties in Washington; Arctic Alaska south to Chelan County, WA, east across northern Canada to Labrador, east in the U.S. to the Rocky Mountains.
Habitat: Moist subalpine meadows, cliff faces, and ledges, often in boggy soil.
Origin: Native
Flowers: July-September

Small-flowered Grass-of-Parnassus (Parnassia parviflora)
Origin: Native

Western grasswort (Lilaeopsis occidentalis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California.
Habitat: Marshes, river banks, salt flats, muddy or sandy beaches and shores along and near the coast.
Origin: Native
Flowers: June-July

Greasewood (Sarcobatus vermiculatus)
Distribution: East of the Cascade in Washington; Washington south to California, east to the Dakotas, south to Colorado.
Habitat: Saline or alkaline, usually heavy soils of the drier regions.
Origin: Native
Flowers: May-July

Spiny green-bush (Glossopetalon spinescens)
Origin: Native

Dyer's greenweed (Genista tinctoria)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington, Idaho, and in eastern North America.
Habitat: Roadsides, wastelots, and other disturbed open areas.
Origin: Introduced
Flowers: May-June

Field gromwell (Buglossoides arvensis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Roadsides, fields, and other dry, open, often disturbed sites in sagebrush desert to ponderosa pine forest openings.
Origin: Introduced from Europe
Flowers: April-June

Tall hairy grooveburr (Agrimonia gryposepala)
Distribution: Reported from Washington but currently no specimens exist; British Columbia to California, east to the Rocky Mountains.
Habitat: Edges, openings, draws, thickets, and open forest.
Origin: Native
Flowers: June-August

Ground cedar (Diphasiastrum complanatum)
Distribution: Occurring on both sides of the Cascades crest in Washington, primarily in the northern half of the state; Alaska south to Washington, Idaho and Montana, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Moist to dry, usually coniferous forests, rocky slopes and sandy openings, low to mid-elevations.
Origin: Native
Spores: Sporing structures in summer and fall

Long-leaved ground-cherry (Physalis longifolia)
Distribution: Occurring chiefly east of the Cascades in Washington; occurring throughout much of North America.
Habitat: Weed of cultivated fields and waste places.
Origin: Introduced
Flowers: June-September

Tree ground-pine (Dendrolycopodium dendroideum)
Distribution: Widespread across boreal forests of North America, south to northern Washington, Idaho, Montana, Colorado, and NE U.S. Also found in Asia. In Washington, known from scattered locations in the west Cascades and in Pend Oreille county.
Habitat: Woodlands and open brushy areas. In Washington, found mostly among rock or talus with thick moss or duff layers, often under brush or on edges of forest. At mid elevations in the mountains.
Origin: Native

Vancouver groundcone (Kopsiopsis hookeri)
Distribution: Occurring west of the Cascades crest along the Puget Sound and outer coast in Washington; British Columbia to California.
Habitat: Myco-heterotrophic on Gaultheria shallon, which occurs primarily in forest understories, along forest edges, and in forest and meadow openings at low to moderate elevations.
Origin: Native
Flowers: May-July

Arrowleaf groundsel (Senecio triangularis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist places and streambanks from the lowlands to the subalpine.
Origin: Native
Flowers: June-September

Black-tipped groundsel (Senecio lugens)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Washington, east to the northern Rocky Mountains.
Habitat: Wet meadows, grassy alpine slopes, and rich northern woods.
Origin: Native
Flowers: June-August

Butterweed groundsel (Senecio serra)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Meadows and open, moist hillsides, foothills to mid-elevations in the mountains.
Origin: Native
Flowers: June-August

Common groundsel (Senecio vulgaris)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, waste ground, lawns, and other disturbed, open sites.
Origin: Introduced from Europe
Flowers: February-May

Few-leaved groundsel (Packera subnuda)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Wyoming.
Habitat: Wet meadows in the subalpine and alpine.
Origin: Native
Flowers: July-September.

Long-rayed groundsel (Packera macounii)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Open woods and dry, open places at low elevations.
Origin: Native
Flowers: May-July

Porter's groundsel (Packera porteri)
Distribution: Reported east of the Cascades crest in Okanogan County in Washington; Washington and Oregon, also occurring in Colorado.
Habitat: Talus slopes in the alpine.
Origin: Native
Flowers: July-August

Rocky Mountain groundsel (Packera streptanthifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains and Sasketchewan.
Habitat: Moist to moderately dry open areas and forest, from middle elevations to the subalpine.
Origin: Native
Flowers: May-August

Water groundsel (Senecio hydrophilus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Swampy places in the valleys and foothills; tolerant of alkali.
Origin: Native
Flowers: June- September

Wood groundsel (Senecio sylvaticus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, also in eastern North America.
Habitat: Roadsides, fields, forest edge, wastelots, and other disturbed areas at low elevation.
Origin: Introduced from Europe
Flowers: May-September

Woolly groundsel (Packera cana)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains.
Habitat: Dry, open, often rocky places, from the foothills to alpine meadows.
Origin: Native
Flowers: May-August

Deceptive groundsmoke (Gayophytum decipiens)
Distribution: Occurring east of the Cascades crest in central Washington; north-central Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Rocky ridges and slopes, meadows, and flats from sagebrush desert to ponderosa pine forest openings.
Origin: Native
Flowers: June-August

Pinyon groundsmoke (Gayophytum ramosissimum)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California and Arizona, east to the Rocky Mountains.
Habitat: Dry foothills and valleys to the lower mountains.
Origin: Native
Flowers: June-July

Spreading groundsmoke (Gayophytum diffusum)
Distribution: Both sides of the Cascades in Washington; British Columbia south to California, east to South Dakota and New Mexico.
Habitat: Dry meadows and open slopes, from lowlands to near timberline.
Origin: Native
Flowers: June-August

Grouseberry (Vaccinium scoparium)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Colorado.
Habitat: Open, dry forests, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August

Guaco (Peritoma serrulata)
Distribution: East of the Cascades in Washington; widely distributed throughout North America except Alaska and southeastern U.S.
Habitat: Sagebrush deserts and Ponderosa pine forest openings.
Origin: Native
Flowers: June-August

Coastal gumweed (Grindelia hirsutula)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Coastal bluffs, forest openings, alluvial areas, and disturbed sites at low to middle elevations.
Origin: Native
Flowers: May-October

Curlycup gumweed (Grindelia squarrosa)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east across southern Canada and most of the United States to the Atlantic Coast.
Habitat: Dry, open, often sandy places, at low to middle elevations, often where disturbed.
Origin: Introduced from the Great Plains and possibly Rocky Mountains area
Flowers: June-September

Puget Sound gumweed (Grindelia integrifolia)
Distribution: Occurring west of the Cascades crest in Washington at low elevations; British Columbia to northern California.
Habitat: Salt marshes, rocky shores along the coast, coastal headlands and bluffs, and various non-maritime habitats in the Puget Trough.
Origin: Native
Flowers: June-March

Gypsy flower (Cynoglossum officinale)
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, forest edge, ditches, and other disturbed open areas; noxious weed.
Origin: Introduced from Eurasia
Flowers: May-July