Lactuca
lettuce
Synonyms:
Mulgedium [FNA19]
8 species
1 subspecies and varieties
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Lactuca biennistall blue lettuce, wild blue lettuce
Distribution: Alaska to Newfoundland, south to California and North Carolina.
Habitat: Moist places.
Origin: Native
Flowers: July - August
Lactuca canadensisCanadian wild lettuce, Florida blue lettuce
Distribution: Widespread in eastern United States; occasionally introduced in the Pacific Northwest.
Habitat: Fields, woodlands and waste places.
Origin: Introduced from eastern North America
Flowers: July - September
Lactuca ludovicianaLouisiana lettuce, prairie lettuce, western lettuce
Origin: Introduced
Flowers: July - September
Lactuca salignaleast lettuce, willow lettuce
Distribution: Occurring in scattered locations in Washington; Washington south to California, east across the southwestern U.S. to the central U.S. and northeastern North America.
Habitat: Disturbed areas, roadsides, and meadows.
Origin: Introduced
Flowers: August-October
Lactuca sativagarden lettuce
Distribution: Occurring in scattered locations in Washington; Washington south to California, east to Idaho; in scattered locations in the central U.S., more commonly distributed in eastern North America.
Habitat: Disturbed areas, often escaping from cultivation.
Origin: Introduced
Flowers: July-September
Lactuca serriolaprickly lettuce
Distribution: Occurring on both sides of the Cascades in Washington; common and widespread throughout much of North America.
Habitat: Fields and waste places.
Origin: Introduced from Europe
Flowers: July-September
Lactuca tataricablue lettuce
Origin: Native
ssp. pulchella – blue lettuce
Lactuca virosagreat lettuce, tall lettuce, wild lettuce
Distribution: Known from Puget Trough region in Washington; also in California, Mississippi, and Maryland.
Habitat: Disturbed, open areas at low elevations including wastelots and roadsides.
Origin: Introduced
Flowers: May-October