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prickly sow thistle

noun
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Definition of prickly sow thistle

: an annual European sow thistle (Sonchus asper) naturalized in North America and having clasping spiny-toothed leaves with rounded basal auricles, lemon-yellow flower heads, and 3-nerved achenes

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“Prickly sow thistle.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/prickly%20sow%20thistle. Accessed 10 December 2019.

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