wild lettuce

noun

any of various uncultivated species of lettuce, growing as weeds in fields and waste places, especially a North American species, Lactuca canadensis.

wild lettuce

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)

Besides cocillana the preparation contains two other obsolete drugs, wild lettuce and euphorbia pilulifera.

The wild lettuce yields down for the humming-bird's nest, and the flowers of whiteweed are used by the kingbird and cedar-bird.

Back in the meadows where thistles and wild lettuce are going to seed, the hard-bills spend their holidays.

Grasses and wild lettuce were next to alfalfa in importance.

Many grasslands have a stand of dandelions; sow thistle, wild lettuce, and ragweed were also common in some grasslands.

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