Gentianaceae
Gentian Family
7 genera
15 species
4 subspecies and varieties
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Centaurium erythraeacommon centaury, European centaury
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California east to Idaho; eastern North America.
Habitat: Escaped to meadows, prairies and wasteland.
Origin: Introduced
Flowers: June-August
Centaurium pulchellumbranching centaury, lesser centaury
Origin: Introduced
Comastoma tenellumLapland gentian, Samiland gentian, slender gentian
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
Frasera albicaulis
Distribution: East of the Cascades in Washington; British Columbia to California, east to Montana and Nevada.
Habitat: Low plains to open areas in the mountains at moderate elevations.
Origin: Native
Flowers: May-July
var. albicaulis – white-stemmed frasera
var. columbiana – Columbia frasera
Frasera fastigiataclustered frasera, Umpqua green-gentian
Distribution: In the Blue Mountains of Washington; Oregon, east to northeast Idaho.
Habitat: Moist woods and meadowlands.
Origin: Native
Flowers: May-July
Frasera speciosaelkweed, giant frasera, monument plant
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to the Rocky Mountains, Texas and South Dakota.
Habitat: Open areas to open forests, foothills to subalpine slopes.
Origin: Native
Flowers: June-August
Gentiana affinispleated gentian, prairie gentian, Rocky Mtn. gentian
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
Gentiana calycosaexplorer's gentian, mt. bog gentian
Distribution: In the Cascades, Olympics and Blue Mountains of Washington; British Columbia south to California, east to Alberta, Wyoming, and Utah.
Habitat: Alpine to subalpine meadows.
Origin: Native
Flowers: July-October
Gentiana douglasianaswamp gentian
Distribution: Narrow distribution in Cascade and Olympic Mountains of Washington; Alaska south to Washington.
Habitat: Bogs and tundra.
Origin: Native
Flowers: July-September
Gentiana glaucaglaucous gentian
Distribution: In the North Cascades of Washington; Alaska south to Washington and Montana.
Habitat: Tundra and alpine meadows.
Origin: Native
Flowers: July-September
Gentiana sceptrumKing's gentian, staff gentian
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
Gentianella amarellanorthern gentian
Distribution: Across the northern part of Washington on both sides of the Cascades; Alaska to California, east to Minnasota and New Mexico.
Habitat: Moist areas, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: June-September
var. acuta – felwort, northern gentian
Swertia perennisalso felwort, alpine bog swertia
Distribution: Narrowly distributed in Cascades of Washington; Alaska south to California, east through the Rocky Mountains.
Habitat: Streambanks, wet meadows and other moist places, mid- to high elevations in the mountains.
Origin: Native
Flowers: July-August
Zeltnera exaltatadesert centaury, tall centaury
Distribution: East of the Cascades in Washington; east to Nebraska and Colorado, south to eastern California.
Habitat: Moist places, especially around alkaline lakes and hot springs.
Origin: Native
Flowers: June-July
Zeltnera muehlenbergiiMuhlenberg's centaury, Muhlenberg`s centaury
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Forest openings, wet areas at low to moderate elevations.
Origin: Native
Flowers: June-August