4 species
1 subspecies and varieties
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Lappula longispinalong-spined stickseed
Distribution: East of the Cascades in the Pacific Northwest; Eurasia.
Habitat: A weed in dry, disturbed places, along roadsides and on overgrazed ranges.
Origin: Introduced
Flowers: May - July
Lappula montanamontane stickseed
Distribution: Occurring east of the crest in north-central Washington; central British Columbia to north-central Washington, east to Montana.
Habitat: Dry meadows and forest openings from low to middle elevations.
Origin: Native
Flowers: May-July
Lappula occidentaliswestern stickseed
Origin: Native
var. occidentalis – western stickseed
Lappula squarrosabristly sheepburr, bristly stickseed, common stickseed, European stickseed, bristly-fruited tickweed
Distribution: Occurring east of the Cascades crest in Washington; widely distributed throughout much of North America; Eurasia.
Habitat: Shrub-steppe, disturbed areas, roadside.
Origin: Introduced from Eurasia, possibly native in northern Rocky Mts. (Cronquist et al. 1984)
Flowers: June-August