Dubius: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 

	leaf tips straight; NOT [leaf tips usually coiled or curved back]
	flower head stalk usually flared below flower head; NOT [stalk only slightly flared below flower head]
	flower heads in bud cone-shaped, gradually tapered at the top; NOT [flower heads in bud urn-shaped, abruptly narrowed at the base and the top]
	phyllaries usually longer than florets