Cirsium drummondii
Short-Stemmed Thistle
Outer Bract, Outer Surface
Duck Mountain Provincial Park
01-July-07
Drummondii: Answers to key questions in Budd's Flora (BF) and Flora of Alberta (FOA) leading to this species.
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Cirsium: Answers to key questions in Budd's Flora (BF) and Flora of Alberta (FOA) leading to this genus.
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