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

	plants with caudex, no taproot; NOT [plants with thick taproot] (BF)
	plants NOT producing leafy stolons (FOA)
	plants usually more than 20 cm high; NOT [plants usually less than 20 cm high] (BF)
	plants generally green; NOT [plants generally greyish to dark olive-green] (FOA)
	basal rosette often not present; NOT [basal rosette generally present] (FOA)
	NOT [basal leaves lobed or toothed, occasionally entire] (FOA)
	basal leaves not 3-nerved; NOT [basal leaves frequently 3-nerved] (FOA)
	stem leaves usually 5-7; NOT [stem leaves usually more than 10] (BF)
	stem leafiest basally; NOT [stem leafiest about the middle] (FOA)
	cauline leaves markedly reduced in size upwards; NOT [cauline leaves often not markedly reduced in size upwards], NOT [stem leaves at middle of stem longer than those below or above], NOT [stem leaves all about 2 mm wide]  (BF,FOA)
	leaves lanceolate to oblanceolate or spatulate; NOT [leaves linear to oblanceolate] (FOA)
	NOT [cauline leaves auriculate-clasping] (FOA)
	leaves more or less entire, not dissected, trifid or lobed at the apex; NOT [leaves dissected, or at least some trifid or lobed at the apex] (FOA)
	leaves more than 3 mm wide; NOT [leaves 1-3 mm wide] (FOA)
	cauline leaves less than 1 cm wide; NOT [cauline leaves mostly 1-2 cm wide] (FOA)
	leaves scabrous or pilose on both sides; NOT [leaves glabrous below, lightly pubescent above] (BF)
	leaves pubescent; NOT [leaves essentially glabrous above and below] (FOA)
	leaves lacking depressed, pubescent veins; NOT [leaves with depressed, usually pubescent veins] (FOA)
	heads usually more than one; NOT [head solitary] (FOA)
	peduncles straight; NOT [peduncles arcuate] (FOA)
	involucre at least 6 mm high; NOT [involucre 4-5 mm high] (FOA)
	involucres NOT woolly-villose (FOA)
	involucre NOT glandular (FOA)
	NOT [involucre deep purple; densely villous, the hairs with purple septa] (FOA)
	rays present, longer than 5 mm; NOT [rays absent, inconspicuous or short, not more than 5 mm long] (FOA)
	rays usually less than 1 mm wide; NOT [rays about 2 mm wide] (FOA)
	ray florets white; NOT [ray florets colored], NOT [ray florets yellow] (BF,FOA)
	rays usually drying pink or purplish; NOT [rays usually drying white or yellowish] (FOA)
	ray florets with a normal pappus; NOT [ray florets with a minute pappus] (BF)

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

	NOT [basal leaves mostly 1-6 cm long, linear to oblanceolate or spatulate, forming a dense rosette; plants with a well-developed taproot; and either densely caespitose, seldom more than 5 cm tall, the heads sessile among the leaves, or with stout, simple stems, 5-15 (25) cm tall, heads solitary, involucres 2-4 cm wide, bracts ciliate to pectinate or fimbriate, rays blue and achenes densely pubescent, obovate to triangular] (FOA)
	juice watery; NOT [juice milky] (FOA)
	plants usually with leafy stems; NOT [plants low, stemless, tufted] (BF)
	basal leaves not cordate or sagittate (FOA)
	leaves alternate or basal; NOT [leaves opposite] (FOA)
	leaves appearing before the flowers; NOT [leaves appearing after the flowers] (BF)
	leaves not extending beyond flowers; NOT [leaves usually extending beyond the flowers] (BF)
	involucral bracts subequal or more or less imbricate, often green in part, but neither definitely leafy nor with chartaceous base and herbaceous green tip; NOT [involucral bracts either subequal and the outer leafy or more commonly evidently imbricate, with chartaceous base and evident green tip, sometimes chartaceous throughout] (FOA)
	bracts in 1 or 2 series; NOT [bracts in several series] (BF)
	receptacle naked (FOA)
	flower heads with florets both tubular and ray (BF)
	ligulate flowers when present pistillate or neuter; NOT [ligulate flowers perfect] (FOA)
	ray florets conspicuous (BF)
	ray florets 50 or more; NOT [ray florets 10-50] (BF)
	rays white, to pink, purple or blue; NOT [rays yellow or orange] (FOA)
	stamens united to form a tube around the pistil (BF)
	style branches 0.5 mm long or less, or obsolete; NOT [style-branches ordinarily more than 0.5 mm long] (FOA)
	style branches lanceolate or broader; NOT [style-branches lanceolate or narrower] (FOA)
	style branches acute or obtuse; NOT [styles branches acute or acuminate] (FOA)
	pappus composed of numerous hairs; NOT [pappus absent or composed of a few hairs], NOT [pappus of 1 or 2 short awns, a mere crown or none] (BF,FOA)