wild lettuce

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Related to lactuca canadensis: Lactuca virosa

wild lettuce

n
(Plants) any of several uncultivated lettuce plants, such as Lactuca serriola (or L. scariola) of Eurasia and L. canadensis (horseweed) of North America, which grow as weeds and have yellow or blue flowers, milky juice in the stem, and prickly leaves: family Asteraceae (composites)
References in periodicals archive ?
Lactuca canadensis occurs throughout the greater part of
Juncus torreyi Koeleria macrantha Kummerowia stipulacea * Lactuca canadensis Lactuca serriola * Lactuca sp.
1 Asteraceae Native Cony--a canadensis Asteraceae Native Erigeron annuus Asteraceae Native Lactuca canadensis Asteraceae Introduced Lactuca serriola Asteraceae Native Pyrrhopappus carolinianus Asteraceae Native Solidago canadensis Asteraceae Native Taraxacum officinale Brassicaceae Introduced Capsella burla pastoris Convolvulaceae Native Calystegia sepium Chenopodiaceae -- Chenopodium sp.
In this study we examined the effect of browsing by white-tailed deer (Odocoileus virginianus) on the monocarpic perennial forb, Lactuca canadensis.