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

	herbs or subshrubs with bases not woody and branches usually herbaceous; NOT [shrubs with woody bases and branches]
	plants hairy, silky, or woolly; NOT  [plants glabrous or nearly so]
	stem-leaves deeply and narrowly dissected; NOT [stem-leaves entire to coarsely lobed or toothed]
	leaves only once or twice divided; NOT [leaves 2 or 3 times divided]
	leaf-divisions wider, mostly 2-3 mm wide;  NOT [leaf-divisions narrow-filiform, about 1 mm wide]
	leaf-lobes rounded; NOT [leaf-lobes acute]
	margin of leaves entire; NOT [margin of leaves serrate]
	leaves greyish green; NOT [leaves green]
	leaves hairy or silky hairy, but not woolly; NOT [leaves white woolly, at least on underside] (BF)
	leaves tomentose at least below; NOT [leaves essentially glabrous] (FOA)
	heads erect; NOT [heads nodding] (FOA)
	heads 2-3 mm wide; NOT [heads 3-5 mm wide], NOT [heads large, 6-10 mm across]
	involucral bracts 1-2 mm long; NOT [involucral bracts 2-3 mm long]
	receptacular hairs present between the disc-florets; NOT [receptacular hairs absent]

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

	herbs; NOT [low grayish shrubs, with linear leaves]
	juice watery; NOT [juice milky]
	NOT [plants annual, woolly or glandular; leaves opposite, at least below, linear-lanceolate, 1-6 mm wide, entire]
	leaves alternate; NOT [most of the leaves opposite]
	basal leaves either absent, or of distinctly different shape or not woolly below; NOT [basal leaves triangular-ovate to subreniform, white-woolly below]
	leaves lobed or divided; NOT [leaves linear-elliptic], NOT [leaves large, deltoid-ovate]
	leaves without spiny-tipped teeth
	flowers appearing after the leaves; NOT [flowers appearing before the large felty-pubescent leaves]
	inflorescence paniculate, spicate or racemose; NOT [inflorescence corymbose]
	inflorescence not glandular; NOT [inflorescence glandular sticky]
	heads numerous
	heads not over 5 mm across
	involucral bracts usually more numerous; NOT [involucral bracts 4-5]
	bracts of involucre not dry or parchmenty, usually green; NOT [bracts of involucre dry, parchmenty or membranous, not green]
	involucral bracts not petaloid; NOT [involucral bracts with yellowish, more or less petaloid, scarious tips]
	involucral bracts not spiny-tipped
	involucral bracts without hooked bristles
	receptacle naked or merely hairy; NOT [receptacle chaffy]
	flower heads with all florets tubular
	florets yellow or greenish yellow; NOT [florets purplish white, purple, or rose]
	stamens united  to form a tube around the pistil
	pappus none or inconspicuous; NOT [pappus present, distinct]