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

	leafy stems tufted, herbaceous, from a perennial underground base; NOT [main stems prostrate, elongated, often semi-wooded], NOT [shrubs]
	plants without runners; NOT [delicate plant with long, slender, branched, rooting runners]
	plants less than 3 dm high; NOT [plants 0.5–2 m high]
	stems not prickly
	leaves 3-foliolate; NOT [leaves 5-digitate], NOT [leaves pedate], NOT [leaves 3-5 foliolate, usually pinnate or lobed], NOT [leaves rounded, shallowly several-lobed]
	central leaflet with rounded tip; NOT [central leaflet with pointed tip]
	flowers mostly perfect; NOT [flowers unisexual]
	petals 10-15 mm long; NOT [petals 4-8 mm long]
	petals spreading at maturity; NOT [petals erect]
	petals rose-coloured; NOT [petals white]

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

	shrubs; NOT [herbs, or with a woody base and otherwise herbaceous], NOT [small trees]
	plants generally taller than 5-15 cm
	leaves compound, distinctly divided into leaflets; NOT [leaves simple]; NOT [leaves lobed, not distinctly divided]
	leaves not linear-dissected; NOT [leaves dissected into linear divisions]
	leaves with 3-5 leaflets; NOT [leaves with 5-11 leaflets], NOT [leaves with 11-17 leaflets]
	sepal bractlets absent; NOT [bractlets alternating with the sepals]
	flowers white; NOT [flowers pink or yellow]
	carpels numerous; NOT [carpel 1], NOT [carpels mostly 5]
	ovary or ovaries superior; NOT [ovary inferior]
	hypanthium shaped like a saucer, cup or urn and free from the ovary; NOT [ovary enclosed in and adnate to the hypanthium]
	fruit more or less fleshy; NOT [fruit dry]
	carpels becoming drupelets (raspberry-like); NOT [carpels becoming achenes, enclosed in a fleshy receptacle]

Rosaceae: Answers to key questions in Budd's Flora  leading to this family. 

	shrubs or trees; NOT [herbs]
	plants NOT climbing
	plants with normal leaves; NOT [succulent, spiny plants with leaves absent or scale-like, inconspicuous]; NOT [leaves all basal, and tubular or with tentacles for catching insects]
	leaves alternate; NOT [leaves opposite]
	leaves compound; NOT [leaves simple]
	leaflets NOT leathery
	leaflets NOT spinose-tipped
	flowers with two floral rings, and with each petal distinct from the others
	flowers perfect; NOT [flowers dioecious or perfect]
	petals 5; NOT [petal (standard) solitary]
	stamens numerous; NOT [stamens 5]
	fruit NOT a legume