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

	plants mostly erect; NOT [plants mat-forming, with creeping or trailing branches]
	leaves thin; NOT [leaves thick, coriaceous, revolute, shining above]
	leaves very hairy, especially beneath; NOT [leaves glabrous or sparsely hairy]
	leaves deciduous; NOT [leaves evergreen]
	flowers in dense terminal racemes; NOT [flowers axillary, solitary or a few together]
	corolla urn-shaped or globose; NOT [corolla open cup-shaped, 4-lobed, rose-pink]
	fruit blue, black or red; NOT [fruit red]

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

	stems erect, or if creeping not filiform; NOT [stems filiform and creeping], NOT [dwarf plants with very slender creeping stems]
	petals united into an urn-shaped or campanulate tube; NOT [petals appearing separate, turned backward]
	corolla cup-shaped or urn-shaped; NOT [corolla divided nearly to the base, lobes reflexed]
	ovary inferior; NOT [ovary superior]
	fruit fleshy; NOT [fruit fleshy or dry]

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

	shrubs or trees; NOT [herbs]
	leaves alternate; NOT [leaves opposite or whorled]
	flowers not in heads
	flowers with two floral rings
	petals wholly or partly united forming a tube or bell
	ovary inferior; NOT [ovary superior]
	fruit fleshy; NOT [fruit usually a capsule, sometimes a mealy-fleshy drupe]
	fruit many-seeded; NOT [fruit 1-seeded]