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

	stolons leafy; NOT [stolons often leafless, with a terminal rosette]
	leaves usually small, ovate, spatulate; NOT [leaves mostly linear-lanceolate]
	leaves generally narrower; NOT [leaves generally about 1 cm wide]
	leaves usually green and glabrous above; NOT [leaves usually greyish and tomentose above and below]
	plants with greatly reduced stem leaves; NOT [plants with well-developed stem leaves]
	basal leaves in well-developed appressed rosettes; NOT [basal leaves, if present, upright around the stem]
	rosette leaves to 25 mm long; NOT [rosette leaves to 50 mm long]
	rosette leaves usually less than 10 mm wide; NOT [rosette leaves 20 mm wide]
	lower leaves usually broader; NOT [lower leaves narrowly oblanceolate]
	rosette leaves densely pubescent on both sides; NOT [rosette leaves glabrous to subglabrous above; densely pubescent below]
	stem leaves 5-7; NOT [ stem leaves 8-12]
	heads in corymbs, often congested; NOT [heads in loose racemes]
	heads on short peduncles or subsessile; NOT [heads on long, slender peduncles]
	involucre 8-13 mm high; NOT [involucre 4-7 mm high]
	involucral bracts green or whitish at the base; NOT [involucral bracts with a large dark spot at the base]
	bracts woolly at base; NOT [bracts glabrous or nearly so]
	bracts with white or cream tips; NOT [bracts with  greenish, light brown, dark brown, or black tips], NOT [bracts with pink tips]  (Flora of Alberta)
	terminal part of involucral bracts whitish or light pink when young; NOT [terminal part of involucral bracts roseate to deep pink, even at maturity] (Budd's Flora)

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

	juice watery; NOT milky
	plants perennial with fibrous roots, lacking a taproot; NOT [plants perennial with taproot, or low spreading annuals]
	plants often stoloniferous; NOT [plants rhizomatous but lacking stolons]
	low plants; NOT [tall plants]
	plants more or less white-woolly
	leaves mostly basal, with stem leaves reduced; NOT [stem leafy]
	basal leaves generally forming a persistent tuft or rosette, stem seldom very leafy; NOT [basal leaves soon deciduous, not markedly larger than the numerous well-developed cauline leaves]
	basal leaves, if any, NOT cordate or sagittate
	bracts of involucre dry, parchmenty or membranous; NOT [green]
	involucral bracts mostly with dry, scarious, thin, white to yellowish or brownish tips]; NOT [involucral bracts not markedly scarious at the tip]
	receptacle naked; NOT [receptacle densely bristly]
	flower heads with all florets tubular
	flowers NOT perfect
	heads strictly dioecious; NOT [some or all pistillate heads with a few central staminate flowers]
	stamens united to form a tube around the pistil
	pappus of capillary bristles, sometimes plumose; NOT [pappus of scales, or of awns, or a crown, or none]