Vascular Plants

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Scientific names beginning with M:
Maclura pomiferaosage-orange
Distribution: Introduced and established in the Snake River Canyon in Asotin County, Washington; Washington south to California, and widely established in central and eastern U.S. and Ontario, Canada.
Habitat: Open, disturbed areas.
Madia citriodoralemon scented tarplant, lemon scented tarweed, lemon tarweed
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Nevada.
Habitat: Dry, open hillsides and foothills.
Madia eleganscommon madia, autumn showy tarweed
Distribution: Southwest Washington, south through western Oregon to California.
Habitat: Dry, open places, often becoming a roadside weed.
Madia exiguathreadstem madia, little tarplant, little tarweed
Distribution: Chiefly east of the Cascades, southern British Columbia to California, east to northwest Montana and Nevada.
Habitat: Dry, open woods and grasslands, from the plains and foothills, occasionally up to moderate elevations in the mountains.
Madia glomeratamountain tarplant, cluster tarweed, mountain tarweed
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to south to California, east to the Rocky Mountains and across northern U.S. and southern Canada to the Atlantic Coast.
Habitat: Common in dry, open places from the foothills to mid-elevations in the mountains.
Madia gracilisgrassy tarplant, common tarweed, slender tarweed
Distribution: Widely distributed throughout Washington; British Columbia south to California, east to Montana, Idaho, Nevada, and Utah.
Habitat: Dry, open areas from shrub-steppe to mid-elevations in the mountains.
Madia sativaChilean tarplant, coast tarweed
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California.
Habitat: Dry, open places at low elevations, often along roadsides or other disturbed sites.
Maianthemum dilatatumwild lily-of-the-valley, may-lily, two-leaf false Solomon's-seal
Distribution: Chiefly west of the Cascades in Washington; Alaska south to California, east to northern Idaho.
Habitat: Shady, moist areas, open to dense woods, sea level to moderate elevations in the mountains.
Maianthemum racemosum
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America south of Yukon Territory, Northwest Territory, and Quebec.
Habitat: Moist woods and open forests, sea level to mid-elevations in the mountains.
ssp. amplexicaule – plumed Solomon's seal, plumed spikenard
Maianthemum stellatumstar-flowered Solomon's-seal
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America.
Habitat: Moist woods and streambanks to open, rocky hillsides.
Malaxis monophyllos
var. brachypoda – North American white adder’s-mouth
Malus dawsonianaDawson apple
Distribution: Occurring west of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Fields, roadsides, wastelots, and abandoned homesteads.
Malus ×domesticaapple, cultivated apple
Distribution: In scattered locations in Washington;
Habitat: Disturbed areas, often where escaped from cultivation.
Malus fuscaOregon crabapple, western crabapple
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to California.
Habitat: Moist woods, swamps and open canyons from sea level to moderate elevations in the mountains.
Malus pumilacultivated apple
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Forested edges and openings, fields, roadsides, abandoned homesteads, and other disturbed areas.
Malus pumilacultivated apple
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Forested edges and openings, fields, roadsides, abandoned homesteads, and other disturbed areas.
Malva moschatamusk mallow
Distribution: Occurring west of the Cascades in Washington; Washington south to California, east to Wyoming, and Tennesee to Maine in eastern United states.
Habitat: Garden plant occasionally escaping in disturbed areas.
Malva neglectadwarf mallow
Distribution: Widely distributed throughout Washington on both sides of the Cascades; widely distributed throughout North America.
Habitat: Common weed of roadsides, waste areas, gardens, and disturbed sites.
Malva parvifloracheeseweed, alkali mallow, small-whorl mallow
Distribution: Scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Waste places, disturbed areas.
Malva sylvestriscommon mallow, high mallow
Distribution: Scattered locations on both sides of the Cascades in Washington; widely distributed throughout North America.
Habitat: Waste places and disturbed soil.
Malvella leprosaalkali-mallow
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and southern Great Plains.
Habitat: Sagebrush desert in sandy (often alkaline) soil.
Marah oreganacoastal manroot
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Low elevation fields, thickets and open areas.
Marrubium vulgarewhite horehound
Distribution: Both sides of the Cascades in Washington; introduced in most of the United States.
Habitat: Weed of disturbed sites
Marsilea mutica
Distribution: Known from Snohomish and Pacific counties in Washington; southeastern U.S.
Habitat: Lowland ponds in water to 1 meter deep.
Marsilea oligosporaNelson's pepperwort, Pacific clover-fern water-clover
Marsilea vestitahairy clover-fern, pepperwort, water-clover pepperwort
Distribution: Both sides of the Cascades in Washington; British Columbia south to California, east to Minnesota and Louisiana.
Habitat: Ponds, vernal pools, floodplains.
Matricaria chamomillawild chamomile, scented mayweed
Distribution: Widespread across the United States and southern Canada.
Habitat: Roadsides, dry waste sites.
Matricaria discoideapineapple weed
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas, moist to dry.
Mauranthemum paludosumannual marguerite
Mazus pumilusJapanese mazus
Distribution: Introduced in eastern United States and in scattered locations in southwest Washington and adjacent Oregon.
Habitat: Lawns and wet bottom lands.
Meconella oreganawhite fairy-poppy
Distribution: West of the Cascades, Victoria, British Columbia south to California; rare in Washington, more common in the Willamette Valley of Oregon.
Habitat: Open ground and prairies where wet in the spring.
Meconopsis cambricaWelsh poppy
Distribution: Occurring in lowland western Cascades in Washington; southern British Columbia to Washington, perhaps introduced elsewhere.
Habitat: Forest edge where disturbed.
Medicago arabicaspotted medic
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California, east to Montana; also in the central, southern, and northeastern U.S.
Habitat: Disturbed areas including wastelots, roadsides and fields.
Medicago lupulinahop clover, black medic
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America.
Habitat: Waste places and sandy or gravelly soil.
Medicago minimaburr medick
Distribution: Sparingly introduced in the Pacific Coast states, and some states in the southern and eastern United States
Habitat: Escaped from cultivation
Medicago polymorphatoothed medick
Distribution: Introduced from Europe and found almost throughout the United States; escecially abundant west of the Cascades and Sierra Nevada.
Habitat: Waste ground and disturbed areas, mostly at low elevations.
Medicago sativaalfalfa, lucerne
Distribution: Introduced as a forage crop in the temperate regions of the world
Habitat: Near cultivated fields, roadsides, often on dry ground
Melampyrum linearenarrow-leaved cow wheat
Distribution: Occurring in the northeastern corner of Washington; British Columbia south to Washington, east across the northern half of North America to the Atlantic Coast.
Habitat: Forest openings, rocky outcroppings, and wet areas from low to moderate elevations.
Melica aristatabearded melic grass
Melica bulbosaonion grass
Melica fugaxsmall melic grass
Melica harfordiiHarford's melic grass
Melica smithiiSmith's melic grass
Distribution: Slouthern British Columbia south to Oregon, east to Alberta and Wyoming.
Habitat: Moist woods.
Melica spectabilisshowy melic grass
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.
Melica subulataAlaska oniongrass
Distribution: Southern Alaska south to California, east to Montana and Wyoming.
Habitat: Open slopes to thick, dry or moist woods, from near sea level to mid-elevations in the mountains.
Melilotus albus
Distribution: Widely distributed across Washington; widely distributed as a weed over most of the United States and southern Canada.
Habitat: Roadsides, waste ground, disturbed soil.
Melilotus indicussmall flowered yellow sweet clover, Indian sweet-clover
Distribution: Sparingly introduced in western Washington and Oregon, more common in California.
Habitat: Waste ground, disturbed soil.
Melilotus officinalisyellow sweet-clover
Distribution: Widely distributed throughout Washington; introduced throughout the United States
Habitat: Widespread weed of roadsides and waste ground.
Melissa officinalislemonbalm
Distribution: Scattered localities across Washington; Alaska south to California; central and eastern North America.
Habitat: Roadsides and other disturbed habitats.
Mentha aquaticabergamot mint, water mint
Distribution: West of the Cascades in Washington; British Columbia south to California; central and eastern North America.
Habitat: Lake and pond shores, riparian areas, and wetlands.
Mentha arvensisAmerican wild mint, corn mint, field mint
Distribution: Widely distributed on both sides of the Cascades in Washington; Alaska to California, east across Canada and most of the United States.
Habitat: Common in lake and pond shore margins, riparian and wetland areas at low elevations.
Mentha piperitapeppermint
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout in North America.
Habitat: Banks of streams and ditches, bottom lands and moist roadsides.
Mentha pulegiumpennyroyal
Distribution: Southern and southwestern Washington along the Columbia River; British Columbia south to California; scattered in eastern North America.
Habitat: Moist, disturbed areas.
Mentha spicataspearmint
Distribution: Both sides of the Cascades in Washington; widespread throughout all of North America.
Habitat: Banks of streams and ditches and other damp places.
Mentha suaveolensapple mint
Distribution: Chiefly west of the Cascades in Washington; Washington to California and Arizona
Habitat: Roadsides, wasteland, and other disturbed sites.
Mentha ×villosafoxtail mint
Mentzelia albicauliswhite-stem blazingstar
Distribution: Mostly east of the Cascades in Washington; British Columbia to California, east to Montana and New Mexico.
Habitat: Dry, usually sandy soil in the shrub-steppe to the foothills.
Mentzelia dispersabushy blazing star
Distribution: East of the Cascades in Washington; Washington south to southern California, east to Montana and Colorado.
Habitat: Dry soil, from the plains into the canyons and slopes of the lower mountains.
Mentzelia laevicaulis
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to California, east to Montana and Colorado.
Habitat: Dry, often rocky or gravelly soil, desert valleys to lower mountains.
var. laevicaulis – blazing star mentzelia, common blazing star
var. parviflora – blazing star mentzelia, common blazing star
Menyanthes trifoliatabuck-bean
Distribution: Widely distributed throughout Washington on both sides of the Cascades; Alaska south to California, east across Canada and the northern half of the United States.
Habitat: Bogs, marshes and ponds, low to mid-elevations in the mountains
Menziesia ferrugineafalse azalea, fool's-huckleberry
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, Montana, and Wyoming.
Habitat: Forest understory and edges from montane to subalpine.
Mertensia ciliatastreamside bluebells
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Stream banks, wet meadows, damp thickets, and wet cliffs, from the foothills to high elevations in the mountains.
Mertensia longifloratrumpet bluebells, long-flowered lungwort
Distribution: Chiefly east of the Cascades, British Columbia to California, east to Montana
Habitat: Drier areas, foothills to moderate elevations in the mountains
Mertensia oblongifolia
Distribution: Uncommon east of the Cascades in Washington to California, east to South Dakota
Habitat: Deeper soils in shrub-steppe
var. amoena – sagebrush bluebells
var. oblongifolia – languid lady, leafy lungwort
Mertensia paniculata
Distribution: Alaska to Oregon, east to Montana; also in the Great Lakes region
Habitat: Streambanks and wet meadows at mid-elevations in the mountains
var. borealis – tall lungwort
var. paniculata – panicled lungwort
Mertensia platyphyllabroadleaved bluebells, western bluebells
Distribution: Occurring from the west base of the Cascades Mountains to the coast in Washington; Washington south to Oregon.
Habitat: Stream banks and moist, low woods at lower elevations.
Mertensia umbratilisshade bluebells, shade lungwort
Distribution: Occurring east of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Forest openings and seasonally moist areas at low to middle elevations.
Micranthes apetalaTiny swamp saxifrage, western swamp saxifrage
Distribution: East of the Cascades crest in Washington; Washington south to Oregon, east to Idaho and Montana.
Habitat: Vernally moist meadows at low to moderate elevations.
Micranthes ferruginearusty saxifrage
Distribution: In the Olympics and Cascades mountains in Washington; Alaska to south California, east to Idaho, Montana, and Wyoming.
Habitat: Open, moist, often rocky areas, low to mid-elevations in the mountains.
Micranthes fragosaClayton's saxifrage
Distribution: East of Cascades in Washington, south to Oregon and east to Idaho.
Habitat: Wet slopes and cliffs, often near watercourses.
Micranthes gormaniiGorman's saxifrage
Micranthes idahoensisIdaho saxifrage
Distribution: Washington and Oregon, east to Montana and Idaho.
Habitat: Exposed areas, ledges, and open slopes.
Micranthes integrifoliaColumbian saxifrage, swamp saxifrage, Whole-leaf saxifrage
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to California.
Habitat: Prairies, grassy slopes and vernally moist areas, sea level to subalpine.
Micranthes lyalliiLyall's saxifrage, red-stemmed saxifrage
Distribution: On both sides of the Cascades in Washington; Alaska south to the north Cascades of Washington, east to western Alberta, and south in the Rocky Mountains to Montana and Idaho.
Habitat: Wet, gravelly meadows and along streams and ponds at high elevations.
Micranthes nelsoniana
Distribution: Both sides of the Cascades in Washington; British Columbia to Oregon.
Habitat: Montane wet areas and streambanks from low to medium elevations.
var. cascadensis – dotted saxifrage, Nelson's saxifrage
Micranthes nidificaColumbia saxifrage, swamp saxifrage
Distribution: East of the crest of the Cascades, British Columbia south to northeast California, east to Idaho and Nevada.
Habitat: Prairies and wet banks to subalpine meadows.
Micranthes occidentalismountain saxifrage, redwool saxifrage, western saxifrage
Distribution: Both sides of the Cascades in Washington; Alaska south to Oregon and Nevada, east to Saskatachewan and south to New Mexico.
Habitat: Dry to wet open areas, rock crevices, meadows, and streambanks from moderate to high elevations in the mountains.
Micranthes odontolomabrook saxifrage, streambank saxifrage
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Streambanks, lake shores and wet meadows from the lower mountains to the alpine.
Micranthes oreganabog saxifrage, Oregon saxifrage
Distribution: Both sides of the Cascades crest in Washington; Washington south to California, east to Alberta, Montana, Idaho, Nevada, and Colorado.
Habitat: Bogs, streambanks and wet meadows at mid-elevations in the mountains.
Micranthes rufidularusty-hair saxifrage
Distribution: Both sides of the Cascades in Washington; British Columbia south to California.
Habitat: Wet open areas, ledges, rock outcroppings from moderate to high elevations in the mountains.
Micranthes tischiiOlympic saxifrage
Distribution: Olympic Peninsula endemic
Habitat: Forested ledges and rock crevices where moist.
Micranthes tolmieialpine saxifrage, Tolmie's alpine saxifrage, Tolmie's saxifrage
Distribution: Occurring in the Olympic and Cascade mountains in Washington; Alaska south to California, east to Idaho, Montana, Nevada and Utah.
Habitat: Mountain meadows, scree, and rock crevices at moderate to high elevations.
Microgilia minutiflorasmall-flowered gilia, small-flower skyrocket
Micromonolepis pusillared povertyweed
Distribution: Occurring in central Washington; disjunct in central Washington, otherwise from southern Oregon to California, Nevada, Utah, Wyoming, and Colorado.
Habitat: Sagebrush-steppe desert, often where alkaline.
Microseris bigeloviicoast microseris, coastal silverpuffs
Microseris borealisapargidium, bog microseris, northern silverpuffs
Distribution: Occurring west of the Cascades crest in Washington; southern Alaska south to northern California.
Habitat: Sphagnum bogs and wet meadows in the mountains.
Microseris laciniata
Distribution: Washington to California, from the eastern foothills of the Cascades to the coast.
Habitat: Usually in fairly moist meadows.
ssp. laciniata – cutleaf microseris, cut leaved scorzonella
ssp. leptosepala – cut-leaved silverpuffs, cutleaf silverpuffs
Microseris nutansnodding microseris, nodding scorzonella, nodding silverpuffs
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains and South Dakota.
Habitat: Open areas to open forests, somewhat moist places, low to mid-elevations.
Microsteris gracilisslender phlox
Distribution: Widely distributed throughout Washington; Alaska south to California, east to the Rocky Mountains and the Great Plains in the U.S.
Habitat: Lowlands and foothills in open, dry to moderately moist places.
Microthlaspi perfoliatumperfoliate pennycress
Distribution: Only found along eastern border in Washington; central and eastern U.S.
Habitat: Roadsides, pastures, and other open, disturbed ground.
Mimetanthe pilosadowny monkey-flower, false monkey-flower
Mimulus nanus
Distribution: East of the Cascades, British Columbia to California, east to Montana and Colorado
Habitat: Open, very dry areas
Mimulus ringensAllegheny monkey-flower, Allegheny monkeyflower
Distribution: Occurring along the Columbia and Snake rivers in Washington, where introduced; native to eastern North America.
Habitat: Riparian corridors in open sites, tolerant of episodic or extensive inundation.
Minuartia eleganselegant stitchwort
Minuartia nuttallii
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Sagebrush hills to alpine slopes, especially on gravelly benches or talus.
var. fragilis – brittle sandwort, brittle stichwort
var. nuttallii – Nuttall's sandwort
Minuartia pusillaannual sandwort, dwarf sandwort, dwarf stitchwort
Minuartia rubellaboreal stitchwort
Distribution: Alaska to Greenland, south in the mountains to Oregon and New Mexico
Habitat: Subalpine to alpine meadows, ridges and talus slopes
Minuartia tenellaslender sandwort, slender stitchwort
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to Oregon.
Habitat: Lowlands, prairies and coastal bluffs.
Mirabilis nyctagineafour-o'clock, heartleaf umbrellawort four-o'clock
Distribution: Occurring east of the Cascades in Washington; Native east of the Rockies, Montana to Mexico, east to Wisconsin.
Habitat: Disturbed areas of dry valleys and plains.
Mitella nudabare-stemmed mitrewort
Distribution: Alaska south to the Cascades of northwest Washington, east to Labrador and south to north-central Montana.
Habitat: Damp woods, along streams and in bogs.
Mitellastra caulescensleafy mitrewort, star-shaped mitrewort
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to northwest California, east to Idaho and Montana.
Habitat: Shady woods, wet meadows and swamps, low to mid-elevations.
Moehringia lateriflorablunt-leaf sandwort, bluntleaf sandwort
Distribution: Occurring on both sides of the Cascades in Washington, though more common east of the crest; occurring throughout much of North America except along the southern U.S. boundary.
Habitat: Forest understory and edge, open meadows.
Moehringia macrophyllalarge-leaf sandwort
Distribution: Both sides of the Cascades, east to the Atlantic Coast
Habitat: Moist to dry, shaded to open woods, meadows and rocky slopes in the mountains
Moenchia erectaupright chickweed
Distribution: Occurring west of the Cascades in Washington; British Columbia south to California; in scattered locations in other parts of the central and southern U.S.
Habitat: Open, disturbed areas at low elevations.
Molinia caeruleapurple moor grass
Distribution: Known from a single locality in King County where it is persistent; occurring in scattered locations throughout North America.
Habitat: Disturbed areas at low elevation near the coast.
Mollugo verticillatacarpetweed, green carpetweed
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to Baja California, east over nearly all of temperate North America.
Habitat: Moist, often waste ground, especially along river banks.
Monardella odoratissima
Distribution: Chiefly east of the Cascades in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Open, dry, often rocky places, low deserts to mid-elevations in the mountains.
var. discolor – mountain monardella
var. odoratissima – mountain monardella
Moneses uniflorasingle-delight
Distribution: Distributed on both sides of the Cascades in Washington; Alaska south to California, east to the Rocky Mountains and in eastern North America.
Habitat: Moist woods with high-humas soils, sea level to mid-elevations in the mountains.
Monolepis nuttallianaNuttall's povertyweed
Distribution: East of the Cascades, southern British Columbia south to southern California, east to Manitoba, Missouri and New Mexico.
Habitat: Dry to moist, saline or alkaline soil, from the desert plains to mid-elevations in he mountains.
Monolepis spathulataprostrate monolepis
Monotropa hypopitysmany-flower Indian-pipe
Distribution: On both sides of the Cascades in Washington; British Columbia south to California, east to the Atlantic Coast.
Habitat: In humus of coniferous forests at low to mid-elevations.
Monotropa unifloraone-flower Indian-pipe
Distribution: Chiefly west of the Cascades in Washington; widely distributed throughout North America except for Alaska, Yukon Territory, Nevada, and southern Rocky Mountain states.
Habitat: In humus in deep, shady woods at low to moderate elevations.
Montia chamissoiChamisso's montia, water montia
Distribution: Occurring east of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains; scattered locations east of the Mississippi in the U.S.
Habitat: Wet areas, often in water, from the lowlands to mid-elevations in the mountains.
Montia dichotomadwarf montia
Distribution: Western Washington to northern Casifornia, east to Idaho and western Montana.
Habitat: Moist areas in the lowlands.
Montia diffusaspreading candyflower, branching montia
Distribution: West side of the Cascades, southern British Columbia to Marin County, California.
Habitat: Moist woods at low elevation.
Montia fontanawater blinks, water chickweed
Distribution: Alaska to California, east to Greenland and Maine
Habitat: Wet places, sometimes aquatic and floating, low to moderate elevations
Montia howelliiHowell's montia
Distribution: West of the Cascades, British Columbia to California.
Habitat: Moist lowland areas.
Montia linearislineleaf Indian lettuce, narrow-leafed montia
Distribution: Widely distributed throughout much of Washington; British Columbia south to Calfornia, east to the Rocky Mountains of Canada and the U.S.
Habitat: Moist to dry, usually sandy soil, low to moderate elevations.
Montia parvifoliastreambank springbeauty
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and Idaho.
Habitat: Somewhat moist, open, often rocky, slopes and outcroppings, sea level to moderate elevations in the mountains.
Morella californicaPacific bayberry
Distribution: Along the southern half of the outer coast in Washington; British Columbia south to California.
Habitat: Sandy, moist areas.
Morus albawhite mulberry
Distribution: Chiefly east of the Cascades in Washington; widely established throughout North America.
Habitat: Disturbed ground, waste areas; commonly established along riparian zones of rivers and streams.
Muhlenbergia andinafoxtail muhly
Muhlenbergia asperifoliaor alkali muhly, scratchgrass
Distribution: British Columbia south, east of the Cascades, to California, east to Montana and Texas.
Habitat: Dry to moist alkaline places.
Muhlenbergia filiformispull-up muhly
Distribution: British Columbia south to California, east to Alberta and New Mexico.
Habitat: Usually near warm springs or seepage areas, in moist meadows of mountain valleys to subalpine slopes.
Muhlenbergia glomerataspiked muhly
Muhlenbergia mexicanaMexican muhly, wirestem muhly
Muhlenbergia minutissimaannual muhly, least muhly
Muhlenbergia racemosagreen muhly
Muhlenbergia richardsonismatted muhly
Distribution: British Columbia south, east of the Cascade crests, to Baja California, east to New Brunswick and New Mexico.
Habitat: Moist to dry lowlands, meadows, mountain prairies and rocky slopes.
Mulgedium pulchellumblue lettuce
Distribution: Occurring east of the Cascades crest in Washington; widely distributed throughout North America except in southeastern U.S.
Habitat: Mostly in meadow, thickets and other moist places.
Murdannia keisakwart-removing-herb
Distribution: Widely introduced in southeastern United States; occasional in Washington.
Habitat: Ditches, swales and swamps, often in water.
Muscari armeniacumgarden grape-hyacinth
Muscari neglectumgrape-hyacinth
Mycelis muraliswall lettuce
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common on the west side; British Columbia to Oregon; eastern North America.
Habitat: Roadsides and waste ground from the lowlands to mid-elevations in the mountains.
Myosotis arvensismouse ear, rough forget-me-not, field scorpiongrass
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Fields, roadsides, wastelots, and forest openings, typically associated with disturbance.
Myosotis discoloryellow and blue scorpiongrass, yellow scorpiongrass
Distribution: Introduced in Washington to California, east to Montana, and along the East Coast
Habitat: Roadsides, dry to moist open areas
Myosotis laxabay forget-me-not, small forget-me-not
Distribution: Widely distributed on both sides of the Cascades in Washington; British Colombia and Alberta south to California, east to the Rocky Mountains; also in the eastern half of North America.
Habitat: In moist soil and shallow water, at low to moderate elevations.
Myosotis scorpioidescommon forget-me-not, true forget-me-not, water forget-me-not
Distribution: Introduced in much of western and eastern United States; uncommon in the Pacific Northwest
Habitat: Low to mid-elevations in the mountains
Myosotis strictablue scorpiongrass
Distribution: Introduced over most of northern United States and southern Canada; in Washington, chiefly east of the Cascades, where fairly common.
Habitat: Roadsides, stream banks, and moist to dry open places.
Myosotis sylvaticawood forget-me-not
Distribution: Introduced in western Washington and some mid-West and Eastern states
Habitat: Roadsides and moist woods at low elevations
Myosotis vernaspring forget-me-not, early scorpiongrass, spring scorpiongrass, white scorpiongrass
Myosoton aquaticumgiant chickweed, water chickweed
Distribution: Introduced in much of eastern United States; occasional in the Pacific Coast states and British Columbia.
Habitat: Stream banks, woods, marshes and wet meadows.
Myosurus apetalus
Distribution: East side of the Cascades, British Columbia to California, east to Wyoming
Habitat: Moist areas and vernal streambeds, mostly low elevation grasslands and sagebrush, occasionally to subalpine
var. borealis – sedge mouse-tail
Myosurus clavicaulis
Distribution: Occurring east of the Cascades crest in Washington; Washington south, east of the Cascades, to Oregon, east to Idaho.
Habitat: Sagebrush-steppe.
Myosurus minimustiny mousetail
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to south-central Canada and across the central U.S. to the southeastern states.
Habitat: Wet places, especially vernal pools.
Myosurus sessilisvernal pool mousetail
Distribution: Known from Klickitat County in Washington; South-central Washington south to north-central Oregon, also in central California.
Habitat: Vernal pools.
Myrica galesweetgale
Distribution: West of the Cascades in Washington; Alaska south to Oregon, east across northern Canada, upper Midwest, and northeastern U.S.
Habitat: Coastal bogs, swamps, lakes and streams.
Myriophyllum aquaticumparrot's feather, water feather, South American water milfoil
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Ponds and slow-moving streams.
Myriophyllum heterophyllumtwo-leaf milfoil, various-leaved water-milfoil
Distribution: Known only from Puget Sound lowlands in Washington; British Columbia south to California; widely distributed east of the Mississippi River in Canada and the U.S where apparently it is native.
Habitat: Lakes and ponds.
Myriophyllum hippuroideswestern milfoil, western water milfoil
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California; also in Illinois.
Habitat: Ponds and slow-moving streams.
Myriophyllum pinnatumcutleaf water-milfoil
Distribution: Known in Washington only from Thurston County; southern British Columbia to Oregon, also in eastern North America.
Habitat: Lakes, sloughs, ditches, slow streams.
Myriophyllum quitenseAndean water milfoil, waterwort water milfoil
Distribution: Occurring in scattered locations in Washington; British Columbia south to California, east across Canada to New Brunswick, east in the U.S. to Idaho, Wyoming, and Utah; occurring in Mexico and South America.
Habitat: Ponds and slow-moving streams.
Myriophyllum sibiricumAmerican milfoil, northern milfoil, Siberian water milfoil
Distribution: Widespread in North America; British Columbia south the California, east to the Atlantic Coast.
Habitat: Ponds and quiet streams, often in brackish water.
Myriophyllum spicatumEurasian water milfoil, spiked water milfoil
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Ponds, lakes, and quiet streams.
Myriophyllum ussurienseterrestrial water milfoil, Ussurian milfoil
Distribution: Known in Washington only from Skamania County;
Habitat: Freshwater intertidal zone on mudflats. British Columbia south to Oregon; circumboreal.
Myriophyllum verticillatumverticillate milfoil, whorled water milfoil
Distribution: Distributed on both sides of the Cascades in Washington;
Habitat: Aquatic habitats below the water surface.
Myriopteris gracilisFee's lip fern, slender fern, Fee's lace-fern
Myriopteris gracillimalace fern, lace lip fern
Distribution: Occurring on both sides of the Cascades in Washington; southern British Columbia to California, east to western Montana, Idaho, Nevada and Utah.
Habitat: Cliffs and rocky slopes from montane to subalpine.