Vascular Plants

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Scientific names beginning with R:
25 genera
136 species, 39 subspecies and varieties
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Rainiera strictatongue leaved luina, Rainiera, false silverback
Distribution: Occurring on both sides of the Cascades crest in south-central Washington; Washington south to Oregon.
Habitat: Meadows and moist, open hillsides at mid- to high elevations in the mountains.
Ranunculus abortivuskidney-leaf buttercup
Ranunculus acrismeadow buttercup
Distribution: Occurring chiefly west of the Cascades crest in Washington; widely distributed in the northern half of North America.
Habitat: Moist to well-drained soil at low to moderate elevations.
Ranunculus alismifolius
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Swales, streambanks and moist meadows, moderate to high elevations in the mountains.
var. alismellus – dwarf plantain-leaved buttercup
var. alismifolius – plantain-leaved buttercup
var. davisii – water-plantain buttercup
var. hartwegii – hartweg's buttercup
Ranunculus aquatilis
Distribution: Alaska to California, east to Montana and Wyoming
Habitat: In sluggish streams and ponds, low to moderate elevations
var. aquatilis – white water buttercup
var. diffusus – water buttercup
Ranunculus arvensisfield buttercup, hungerweed
Distribution: Known only from along eastern border in Washington; Washington south to California, east to Idaho and Utah; also in areas of central and eastern U.S.
Habitat: Dry woodlands and waste ground.
Ranunculus bulbosusSt. Anthony's-turnip, bulbous buttercup
Ranunculus californicus
Distribution: Occurring along the northern coastal areas of Washington; British Columbia south to California.
Habitat: Grassy bluffs along the coast.
var. californicus – California buttercup
Ranunculus cardiophyllusheart-leaf buttercup
Ranunculus cooleyaeCooley's buttercup
Distribution: Alaska and the Cascades of British Columbia, known in Washington from Mt. Colonel Bob in the Olympics and Del Campo Peak Snohomish county.
Habitat: Damp slopes and rocky crevices at high elevations, blossoming as snow recedes.
Ranunculus cymbalariaalkali buttercup, seaside buttercup
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America except southern and southeastern regions of U.S.
Habitat: Ditches, marshes and muddy meadowlands.
Ranunculus eschscholtzii
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana, Colorado and New Mexico.
Habitat: Meadow and talus slopes at mid- to high elevations in the mountains.
var. eschscholtzii – Eschscholtz buttercup
var. suksdorfii – Suksdorf buttercup, Suksdorf's buttercup
var. suksdorfii – Suksdorf's buttercup
Ranunculus flabellarisyellow water buttercup
Distribution: East side of the Cascades, British Columbia to northern California, east in Canada to Quebec.
Habitat: Shallow ponds, mud flats and marshes at low elevations.
Ranunculus flammula
Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America except in southern part of U.S.
Habitat: Mostly in mud, often where brackish, from sea level to mid-elevations in the mountains.
var. flammula – creeping spearwort
var. ovalis – creeping spearwort
var. reptans – creeping spearwort
Ranunculus gelidusarctic buttercup, modest buttercup
Distribution: Olympic and Cascade mountains in Washington; scattered from Alaska south to Colorado in the Rocky Mountains.
Habitat: Alpine.
Ranunculus glaberrimus
Distribution: East side of the Cascades, British Columbia to northern California, east to the Dakotas
Habitat: Sagebrush desert, shrub-steppe and ponderosa pine woodlands
var. ellipticus – sagebrush buttercup
var. glaberrimus – sagebrush buttercup
Ranunculus gmeliniismall yellow water buttercup
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to Nevada, east to the Rocky Mountains, and across Canada to the Atlantic Coast.
Habitat: Standing water up to 2 meters deep.
Ranunculus hebecarpusdowny buttercup
Distribution: Eastern Washington and adjacent Idaho, south to Arizona and Baja California.
Habitat: Moist to rather dry hillsides and woodlands.
Ranunculus inamoenus
var. inamoenus – unlovely buttercup
Ranunculus macouniiMacoun's buttercup
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains and northern Great Plains and central Canada; also in Canadian Maritimes.
Habitat: Riparian areas and wet meadows from lowlands to montane.
Ranunculus muricatusspiny-fruit buttercup
Distribution: Introduced in scattered locations in the United States; mostly west of the Cascades in Washington, Oregon and California.
Habitat: Ditches and other moist places, often on cultivated land.
Ranunculus occidentalis
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to California, east to Alberta and Nevada.
Habitat: Moist to well-drained soil, low to mid-elevations in the mountains.
var. occidentalis – western buttercup
Ranunculus orthorhynchus
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and Utah.
Habitat: Streambanks and moist fields to mountain meadows and slopes.
var. orthorhynchus – straight-beak buttercup
var. platyphyllus – straight-beak buttercup
Ranunculus parviflorussmall-flower buttercup
Distribution: Sparingly introduced to lowlands of western Washington; Washington south to California; southeastern U.S.
Habitat: Roadsides, fields, urbanized settings, and other disturbed areas.
Ranunculus pensylvanicusPennsylvania buttercup
Ranunculus populagomountain buttercup
Distribution: In two discrete locations in Washington (Pierce County and Blue Mountains); Washington south to California, east to Idaho and western Montana.
Habitat: Wet areas at mid- to high elevations in the mountains.
Ranunculus pygmaeusdwarf buttercup
Ranunculus repenscreeping buttercup
Distribution: Occurring throughout Washington, but most common west of the Cascades; Alaska south to California and Utah, and from central plains of U.S. to Labrador.
Habitat: Moist areas, lawns and gardens, disturbed forest understory.
Ranunculus sardoushairy buttercup
Ranunculus sceleratus
Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America.
Habitat: Moist meadows and boggy shoreland to semi-aquatic and often brackish areas.
var. multifidus – celery-leaved buttercup
var. sceleratus – celery-leaved buttercup
Ranunculus triternatusobscure buttercup
Distribution: Goldendale area, Klickitat County, Washington, south to Wasco County, Oregon.
Habitat: Sagebrush slopes.
Ranunculus uncinatuslittle buttercup
Distribution: Widely distributed throughout Washington; Alaska to California, east to Montana and New Mexico.
Habitat: Moist, usually shady areas, sea level to mid-elevations in the mountains.
Raphanus raphanistrumjointed charlock, wild radish
Distribution: Occurring in scattered locations chiefly west of the Cascades; widely distributed throughout North America.
Habitat: Weed of waste ground.
Raphanus sativusgarden radish
Distribution: Occurring in scattered locations throughout Washington; widely distributed throughout North America.
Habitat: Waste places.
Ratibida columniferaprairie coneflower, Upright prairie coneflower, redspike Mexican-hat
Distribution: Southeast British Columbia and Montana, east to Minnesota and south to Texas.
Habitat: Prairies, plains and waste ground.
Redfieldia flexuosablowout grass
Reseda albawhite upright mignonette
Distribution: Introduced sparingly in Washington, usually along the coast; British Columbia south to California; upper central and eastern North America.
Habitat: Disturbed ground.
Reseda luteolayellow dye, Dyer's rocket, weld
Distribution: Scattered locations in Washington; British Columbia south to California; scattered locations in central and eastern North America.
Habitat: Disturbed ground.
Rhamnus alnifoliaalder-leaf buckthorn
Distribution: Occurring in the northeast corner of Washington; British Columbia east to Quebec, east of the Cascades to Idaho, Montana and the central Sierra Nevada of California.
Habitat: Moist ground, expecially along streams, at moderate to mid-elevations in the mountains.
Rhinanthus minorlittle yellowrattle; yellow rattle, yellow rattle-box
Distribution: Both sides of the Cascades in Washington; Alaska to Newfoundland, south to upper Midwest and New England; circumboreal.
Habitat: Moist meadows, forest openings, and roadsides at low to middle elevations, sometimes in subalpine.
ssp. groenlandicus – Little Yellow Rattle
ssp. minor – little yellowrattle; yellow rattle
Rhodiola integrifolia
Distribution: In the Cascades and northeastern corner of Washington; Alaska to south to California, east to Colorado.
Habitat: Cliffs, talus and ridges, subalpine to alpine, generally where moist in early summer.
ssp. integrifolia – king's crown, roseroot
Rhododendron albiflorumwhite rhododendron
Distribution: British Columbia to Oregon, east to Montana
Habitat: Moist, usually forested, slopes, mid- to high elevations in the mountains
Rhododendron columbianummt. Labrador tea, smooth Labrador tea, western Labrador tea
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia and Alberta south to California, east to Montana, Wyoming, and Utah.
Habitat: Swamps and bogs, lowlands to mid-elevations in the mountains.
Rhododendron groenlandicumrusty Labrador-tea, bog Labrador tea
Distribution: Occurring west of the Cascades crest in Washington; Alaska south to Oregon and Idaho, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Swamps and bogs along the coast.
Rhododendron macrophyllumCalifornia rhododendron, Pacific rhododendron
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Moist woods, sea level to moderate elevations in the mountains.
Rhus glabrasmooth sumac
Distribution: East of the Cascades in Washington; British Columbia to Mexico, east to New Hampshire and Georgia.
Habitat: Dry hillsides and draws, low to moderate elevations.
Rhus typhinastaghorn sumac
Rhynchospora albawhite beakrush
Distribution: Alaska to California, east to Idaho, and throughout northeastern United states.
Habitat: Sphagnum bogs and other wet places, lowlands to mid-elevations in the mountains
Ribes acerifoliummaple-leaf currant
Distribution: Occurring in the Cascades, Olympic Mountains, and northeastern Washington; Southern British Columbia south to Oregon, east to Idaho.
Habitat: Stream banks, meadowland thickets, open ridges and rock slides, mid-elevations in the mountains to timberline.
Ribes aureum
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains and the Great Plains of the U.S.
Habitat: Moderately moist areas in shrub-steppe to ponderosa pine forests.
var. aureum – golden currant
Ribes bracteosumCalifornia black currant, stink currant
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California.
Habitat: Moist to wet woods, low to mid-elevations.
Ribes cereum
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Great Plains.
Habitat: Shrub-steppe and sagebrush desert to sub-alpine ridges.
var. cereum – wax currant
var. colubrinum – squaw currant, wax currant
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.
var. divaricatum – coast black gooseberry
Ribes hudsonianumHudson Bay currant, northern black currant, western black currant
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east across Canada to the Atlantic Coast, and east in the U.S. to the Rocky Mountains and Great Lakes area.
Habitat: Stream banks, moist woods and meadow margins at mid-elevations in the mountains.
Ribes inerme
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist forest edges and openings in the mountains, riparian corridors at lower elevations.
var. inerme – white-stemed gooseberry, whitestem gooseberry
Ribes lacustreswamp currant, bristly black gooseberry, swamp gooseberry
Distribution: Widely distributed throughout much of Washington; Alaska south to California, east across the northern half of North America to the Atlantic Coast.
Habitat: Moist woods and streambanks to drier forest slopes at low to moderate elevations.
Ribes laxiflorumtrailing black currant
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Wet coastal woods to mid-elevations in the mountains.
Ribes lobbiigummy gooseberry, Lobb's gooseberry, Oregon gooseberry
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.
Ribes montigenumalpine prickly currant, mountain gooseberry, western prickly gooseberry
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Subalpine to alpine ridges, talus slopes and rock crevices.
Ribes nigrumcultivated black currant
Ribes niveumSnake River gooseberry, snow gooseberry
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.
Ribes oxyacanthoides
Distribution: East of the Cascades in Washington chiefly in the northeatern and southeastern portions of the state; Alaska to Oregon, east to the Atlantic Coast in the northern half of North America.
Habitat: Prairies and lower mountains.
var. cognatum – northern gooseberry, umatilla gooseberry, Umatilla gooseberry
Ribes rubrumnorthern red currant
Ribes sanguineum
Distribution: Chiefly west of the Cascades in Washington; British Columbia to south to California.
Habitat: Open to wooded, moist to dry valleys and lower mountains.
var. sanguineum – redflowering currant
Ribes tristeAmerican red currant, swamp red currant, wild red currant
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Moist woods and rocky slopes at mid- to high elevations in the mountains.
Ribes velutinumdesert gooseberry, Goodding's gooseberry
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.
Ribes viscosissimumHall's sticky currant, mountain currant
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open to timbered, moist to fairly dry slopes, moderate to high elevations.
Ribes watsonianumMount Adams gooseberry, spring gooseberry, wastson gooseberry
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.
Ribes wolfiiWinaha currant, wolf's currant
Rigiopappus leptocladusbristlehead, false wireweed
Distribution: Pacific Northwest to Utah and California; chiefly east of the Columbia River in Washington
Habitat: Dry, open areas at low elevations; sagebrush and grasslands areas
Robinia hispidabristly locust
Distribution: Introduced as an ornamental, occasionally escaping.
Habitat: Disturbed soil.
Robinia pseudoacaciablack locust
Distribution: Native to eastern United States, and widely introduced in the West
Habitat: Common around old homesteads, along river banks
Romanzoffia sitchensisSitka mistmaiden
Distribution: Both sides of the Cascades in Washington; Alaska south to northern California, east to Idaho and Montana.
Habitat: Wet cliffs and ledges, usually at mid- to high elevations in the mountains, but descending to near sea level in the Columbia River Gorge.
Romanzoffia tracyiTracy's mistmaiden
Distribution: Along the coast in southwestern Washington; south to northern California.
Habitat: Coastal bluffs and rocks.
Rorippa austriacaAustrian yellowcress field-cress
Distribution: Occurring in scattered locations chiefly east of the Cascades in Washington; Alberta south to California, east to coastal U.S.
Habitat: Disturbed areas and waste ground.
Rorippa columbiaeColumbia yellowcress cress
Distribution: In the south-central counties of Washington; Washington south to California.
Habitat: Moist, sandy soil.
Rorippa curvipesblunt-leaved yellowcress, truncate yellowcress
Distribution: Occurring chiefly east of the Cascades in Washington; widely distributed throughout western and central North America.
Habitat: Wet areas including streambanks, lake shores, wet meadows, and ditches.
Rorippa curvisiliquawestern yellowcress
Distribution: British Columbia to California, east to Montana and Nevada
Habitat: Stream banks and moist soil, low to mid-elevations in the mountains
Rorippa palustrishispid yellowcress, marsh yellowcress
Distribution: Widely distributed throughout Washington; common throughout North America.
Habitat: Wet ground and low elevations.
Rorippa sinuataspreading yellowcress
Distribution: Occurring in Klickitat County in Washington; British Columbia south to California, east to central North America.
Habitat: Wet areas including pond and lake margins, stream banks, and ditches.
Rorippa sylvestriscreeping yellowcress
Distribution: Known only from Whitman County in Washington; British Columbia south to Oregon, east across North America to the Atlantic Coast.
Habitat: Disturbed, moist areas at low to middle elevations.
Rorippa tenerrimaModoc yellowcress
Rosa caninadog rose
Distribution: Introduced at low elevations west of the Cascades, and in Idaho
Habitat: Roadside thickets.
Rosa eglanteriasweetbrier rose
Distribution: Introduced chiefly west of the Cascades, and in eastern United states.
Habitat: Roadsides and pastures, occasionally in more natural areas.
Rosa gymnocarpabaldhip rose, wood rose
Distribution: Occurring west of and on the east slope of the Cascades in Washington; British Columbia to California, and in the mountains of Idaho and eastern Oregon.
Habitat: Moist or dry woods, sea level to mid-elevations in the mountains.
Rosa micranthasmall-flowered sweetbrier
Rosa multiflorarambler rose
Distribution: British Columbia to California; throughout central and eastern North America. Native to eastern Asia.
Habitat: Disturbed areas, roadside plantings, riparian zones.
Rosa nutkana
Distribution: Widely distributed throughout Washington; Alaska south to California, and in the mountains in Colorado and Utah.
Habitat: Open or wooded areas, low to moderate elevations in the mountains.
ssp. macdougalii – bristly Nootka rose
ssp. nutkana – Nootka rose
Rosa pisocarpaclustered rose, peafruit rose
Distribution: Occurring west of the Cascades crest in Washington; southern British Columbia to California.
Habitat: Thickets, stream banks, and swampy places at lower elevations.
Rosa rugosarugosa rose
Distribution: Known from a few scattered locations in lowland western Washington; Alaska and Washington in western North America; in the north-central and northeastern areas of North America.
Habitat: Edge of saltwater beaches, roadsides, forest edge, fields, and other disturbed areas.
Rosa woodsii
Distribution: Occurring east of the Cascades crest in Washington; Alaska south to California, east to the central U.S. and eastern Canada.
Habitat: Valleys and hillsides at low elevations to forest openings at mid-elevations in the mountains.
var. ultramontana – pearhip rose
Rotala ramosiorlowland toothcup
Rubus arcticus
Distribution: Alaska to Newfoundland, south to Vancouver Island and southern British Columbia, and in the Rocky Mountains to Colorado.
Habitat: Tundra to high mountain meadows, bogs and woods.
ssp. acaulis – nagoonberry
Rubus bifronsEuropean blackberry, Himalayan blackberry
Distribution: British Columbia south to California and eastward throughout the intermountain west; sporadically in central and eastern North America.
Habitat: Disturbed areas, riparian zones, and forest edges at low elevations.
Rubus chamaemoruscloudberry
Rubus hispidusbristly dewberry, swamp dewberry
Rubus idaeus
Distribution: Alaska east to Newfoundland, south to California and North Carolina.
Habitat: Stream banks and open, moist or dry woods to rocky slopes in the mountains, often on talus.
ssp. strigosus – grayleaf red raspberry
Rubus laciniatuscut-leaf blackberry, evergreen blackberry
Distribution: Introduced chiefly west of the Cascades, British Columbia to California; occasionally east to Idaho
Habitat: Roadsides and disturbed areas, mostly at low elevations
Rubus lasiococcusroughfruit berry, dwarf bramble, hairy-fruit smooth dewberry
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia south to California.
Habitat: Moist to dry woods, lowlands to subalpine.
Rubus leucodermisblackcap raspberry, dark raspberry, whitebark raspberry
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to southern California, east to the Rocky Mountains.
Habitat: Fields and open to wooded hillsides, from low to moderate elevations.
Rubus nigerrimusdark raspberry, northwest raspberry
Distribution: Along the Snake River in Whitman County, Washington.
Habitat: Moist hillsides, usually along streams.
Rubus nivalissnow dwarf bramble, snow dewberry
Distribution: British Columbia south to southwest Oregon, in the Cascade, Olympic and coastal mountains.
Habitat: Open to deeply shaded, usually moist areas in the mountains at moderate to mid-elevations.
Rubus odoratuspurple flowering raspberry
Rubus parviflorusthimbleberry
Distribution: Alaska to California, east to the Dakotas and New Mexico
Habitat: Open to wooded, moist to dry areas, from sea level to subalpine mountain slopes
Rubus pedatusstrawberry bramble, strawberry-leaf raspberry
Distribution: Alaska to southern Oregon, east to Idaho and Montana
Habitat: Moist areas, open banks to dense forests, near sea level to timberline
Rubus pensilvanicusPennsylvania blackberry
Rubus pubescensdwarf red blackberry, dwarf red blackberry raspberry, raspberry raspberry, red raspberry
Distribution: Occurring in the northeast counties in Washington; widespread throughout the northern half of North America.
Habitat: Stream banks and moist woods to clearings where moderately dry, mid-elevations in the mountains.
Rubus spectabilissalmonberry
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to Idaho.
Habitat: Lowland moist woods and swamps to mid-elevations in the mountains.
Rubus ulmifoliuselm-leaf blackberry
Rubus ursinusor trailing blackberry, California, dewberry, Pacific
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Open to fairly dense woodlands, sea level to mid-elevations in the mountains; common in logged areas.
Rubus vestitusEuropean blackberry
Distribution: Introduced at scattered locations in the Pacific Northwest.
Habitat: Roadsides and waste ground.
Rudbeckia alpicolaor showy coneflower, Wenatchee Mountain, Washington
Rudbeckia hirta
Distribution: Found in most of the United States, but native in the central states and introduced in the Pacific Northwest.
Habitat: Open meadows and disturbed places.
var. pulcherrima – blackeyed Susan
Rudbeckia laciniata
Distribution: Montana and southern Idaho, east to Quebec, then south to Florida.
Habitat: Streambanks and other moist places.
var. ampla – tall coneflower
Rudbeckia occidentaliswestern chocolate come, western coneflower
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Moist openings in forests at moderate to mid-elevations in the mountains.
Rumex acetosagarden sorrel
Distribution: Introduced in scattered locations in North America; occasional in British Columbia, western Washington and Oregon, and northcentral Montana.
Habitat: Disturbed soil and wasteland.
Rumex acetosellacommon sheep sorrel
Distribution: Introduced and common in most of the world.
Habitat: Along highways, railroads, and in waster areas, but also in open or lightly wooded undisturbed areas, from the lowlands to moderate elevations in the mountains.
Rumex conglomeratusclustered dock, sharp dock
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California, also along southern U.S. border to central and eastern U.S.
Habitat: A weed of waste ground.
Rumex crispuscurly dock, sour dock
Distribution: Introduced and common in most of North America from the coast to inland mountains.
Habitat: Moist meadows.
Rumex fueginusAmerican golden dock, Tierra del Fuego dock
Rumex hesperiuswestern willow dock
Rumex maritimusgolden dock
Distribution: Distributed throughout much of Washington; Alaska east to Quebec, south over most of the United States.
Habitat: Mostly in wet places.
Rumex obtusifoliusbitter dock
Distribution: Occurring on both sides of the Cascades in Washington; widely distributed throughout much of North America.
Habitat: Moist roadsides and wasteland.
Rumex occidentaliswestern dock, western dock o n
Distribution: Distributed on both sides of the Cascades in Washington; Alaska south to central California, east to North Dakota and New Mexico.
Habitat: Moist to swampy areas and wet meadows, from the sea coast to foothill valleys.
Rumex patientiapatience dock
Rumex paucifoliusalpine sorrel
Rumex persicarioidesseashore dock, yellow dock
Rumex sanguineusred-vein dock
Rumex stenophyllusnarrow-leaved dock, narrowleaf dock
Rumex transitoriusnarrow-leaved dock, Pacific willow dock
Rumex triangulivalvisor triangular-valved dock, white, white willow
Distribution: Occurring east of the Cascades in Washington; widely distributed throughout most of North America except the southeastern U.S.
Habitat: Range of habitats from riverbanks, stream edges, meadows, open hillsides, roadsides and wastelots; often associated with some type of disturbance.
Rumex venosusveiny dock, winged dock
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains and Great Plains.
Habitat: Sand dunes and sandy river banks to dry, gravelly soil, sagebrush deserts and grasslands at low elevations.
Rupertia physodesCalifornia-tea
Distribution: West of the Cascades in Washington; Washington south to California.
Habitat: Prairie and forest edges at low elevations.
Ruppia maritimabeaked ditch-grass, spiral ditch-grass, western ditch-grass
Distribution: Along the Pacific Coast from Alaska to California, inland throughout Canada and the United States to the Atlantic Coast.
Habitat: Coastal in saline or brackish water, inland in ponds, ditches, and lakes.