Alyssum
alyssum
3 species
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Alyssum alyssoidessmall alison, madwort, pale alyssum madwort
Distribution: Chiefly east of the Cascades in Washington; widely distributed throughout North America except for parts of southeastern U.S.
Habitat: Dry, waste areas, becoming common in the shrub-steppe of eastern Washington.
Origin: Introduced from Eurasia
Flowers: May-July
Alyssum desertorumdesert alyssum
Distribution: East of the Cascades in Washington; widely distributed throughout central and western North America.
Habitat: Dry, open ground, often where disturbed.
Origin: Introduced from Eurasia
Flowers: May-June
Alyssum muraleyellowtuft
Origin: Introduced