Vascular Plants of the Gila Wilderness
Presented in Association with the
Western New Mexico University Department
of Natural Sciences
Sonchus asper (Linnaeus) Hill
(Sow Thistle, Spiny Leaf Sow Thistle)
Sonchus asper is frequently found growing up against buildings in town and in disturbed areas.
It has only yellow ray flowers (ligulate) and very prickly foliage, The auricle, that part of the
leaf that wraps around the stem, is rounded (in comparison to Sonchus oleraceus.)
Please click on an image for a larger file.
Sonchus asper, photo Russ Kleinman & Bill Norris, Silver City, Oct. 27, 2007
Sonchus asper, rounded auricle, photo Russ Kleinman & Bill Norris, Silver City, Oct. 27, 2007
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