Oenothera
evening-primrose, gaura, oenothera
Synonyms:
Gaura [HC]
8 species
4 subspecies and varieties
4 subspecies and varieties
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Oenothera biennis – King's-cureall
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Meadows and stream banks, from the plains to the lower mountains, typically where disturbed.
Origin: Introduced from Europe
Flowers: June-August
Growth Duration: Biennial
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Meadows and stream banks, from the plains to the lower mountains, typically where disturbed.
Origin: Introduced from Europe
Flowers: June-August
Growth Duration: Biennial
Oenothera cespitosa
Distribution: Occuring sporadically throughout central and eastern Washington; widespread throughout much of western U.S. and central Canada.
Habitat: Talus slopes, road cuts, and dry hills.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occuring sporadically throughout central and eastern Washington; widespread throughout much of western U.S. and central Canada.
Habitat: Talus slopes, road cuts, and dry hills.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• ssp. cespitosa – butte primrose, fragrant evening primrose, rock rose
• ssp. marginata – fragrant evening-primrose
Oenothera curtiflora – small-flowered gaura, velvet weed
Distribution: Occurring east of the Cascades crest in Washington; south-central Washington to eastern Oregon, Nevada, and Arizona, east to North Dakota,, Iowa, and Louisiana; introduced in California and the eastern U.S., South America, Asia, and Australia.
Habitat: Meadows, stream banks, roadsides, sandy or rocky slopes, often where disturbed.
Origin: Introduced from the central U.S.
Flowers: June-September
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; south-central Washington to eastern Oregon, Nevada, and Arizona, east to North Dakota,, Iowa, and Louisiana; introduced in California and the eastern U.S., South America, Asia, and Australia.
Habitat: Meadows, stream banks, roadsides, sandy or rocky slopes, often where disturbed.
Origin: Introduced from the central U.S.
Flowers: June-September
Growth Duration: Annual
Oenothera elata – Hooker's evening primrose
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and southern Great Plains in the U.S.
Habitat: Sagebrush hills to mid elevations in the mountains, generally where moist.
Origin: Native
Flowers: June-September
Growth Duration: Biennial, Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and southern Great Plains in the U.S.
Habitat: Sagebrush hills to mid elevations in the mountains, generally where moist.
Origin: Native
Flowers: June-September
Growth Duration: Biennial, Perennial
Oenothera flava – long-tubed evening primrose
Distribution: Occurring east of the Cascades crest, where known historically from the south-central area. Washington to California, east to the Rocky Mountains and Great Plains.
Habitat: Hard-packed soil in swales or around vernal pools in the plains and lower foothills.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where known historically from the south-central area. Washington to California, east to the Rocky Mountains and Great Plains.
Habitat: Hard-packed soil in swales or around vernal pools in the plains and lower foothills.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Oenothera glazioviana – red-sepal evening-primrose
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in scattered locations in the eastern U.S.
Habitat: Disturbed soil.
Origin: Introduced from Europe
Flowers: June-September
Growth Duration: Biennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in scattered locations in the eastern U.S.
Habitat: Disturbed soil.
Origin: Introduced from Europe
Flowers: June-September
Growth Duration: Biennial
Oenothera pallida – pale evening-primrose
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Arizona, east to the Rocky Mountains and Texas.
Habitat: Dry, sandy or gravelly soil, commonly on dunes at low elevations.
Origin: Native
Flowers: May-July (September-October)
Growth Duration: Biennial, Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Arizona, east to the Rocky Mountains and Texas.
Habitat: Dry, sandy or gravelly soil, commonly on dunes at low elevations.
Origin: Native
Flowers: May-July (September-October)
Growth Duration: Biennial, Perennial
• ssp. pallida – pale evening primrose
Oenothera villosa – common evening primrose
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, shores, riparian zones, ditches, disturbed ground.
Flowers: June-August
Growth Duration: Biennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, shores, riparian zones, ditches, disturbed ground.
Flowers: June-August
Growth Duration: Biennial
• ssp. strigosa – hairy common evening primrose
