Wild Lettuce

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Related to lactuca canadensis: Lactuca virosa
An annual containing alkaloids, bitter latex, iron, triterpenes, and vitamins A, B1, B2, and C; it is antitussive and sedative, and has been used for anxiety, insomnia, and whooping cough. It has mild psychotropic (hypnotic/sedative) effects described as similar to opium
Toxicity Wild lettuce may be toxic in large doses
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References in periodicals archive ?
At Cedar Creek Lactuca canadensis is present in fields of various ages but is rather rare.
The population of Lactuca canadensis plants used in this study was within a 10 X 12 m area bisected by one side of a gopher + deer exclosure.
The population of Lactuca canadensis in field 28 was very localized.
Lactuca canadensis L.; Tall or Canada Wild Lettuce; Dry roadside and meadow north of fen; Infrequent; C = 2; BSUH 14789.
Lactuca canadensis L.: Wild or Tall Lettuce; abundant; widespread; BSUH 11173.