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

	shrubs spiny
	young twigs silvery stellate-pubescent ; NOT [young twigs brown stellate-pubescent]
	leaves lanceolate; NOT [leaves elliptic]
	style enclosed at base by tubular disc
	fruit yellow; NOT [fruit silvery, dry]

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

	leaves alternate; NOT [leaves opposite]
	flowers perfect or polygamous; NOT [flowers unisexual]
	sepals 4; NOT [sepals 2]
	stamens 4; NOT [stamens 8]
	tube much longer than the ovary; NOT [tube shorter]

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

	shrubs or trees; NOT [herbs]
	plants with erect stems; NOT [plants with decumbent stems]
	plants not climbing
	leaves simple; NOT [leaves pinnately compound]
	leaves wider; NOT [leaves linear]
	leaves silvery or brownish scurfy
	leaves deciduous; NOT [leaves evergreen]
	flowers not in catkins or aments; NOT [male flowers, at least, in catkins or aments]
	flowers with only one floral ring
	fruit without a feathery style; NOT [fruit with a persistent feathery style]
	fruit fleshy when ripe; NOT [fruit dry when ripe]