Vascular Plants of the Gila Wilderness
Presented in Association with the
Western New Mexico University Department
of Natural Sciences
Sonchus oleraceus Linnaeus
(Annual Sow Thistle, Common Sow Thistle)
Sonchus oleraceus is very similar to Sonchus asper, except that it is less prickly and
the auricles are more acute. The mature achenes are transversely tuberculate, unlike Sonchus
asper in which the achenes are only many-nerved.
Please click on an image for a larger file.
Sonchus oleraceus, photo Russ Kleinman, Silver City, Oct. 26, 2007
Sonchus oleraceus, inflorescence, photo Russ Kleinman, Silver City, Oct. 26, 2007
Sonchus oleraceus, angled auricle of leaf, photo Russ Kleinman, Silver City, Oct. 26, 2007
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