Picea glauca
 
White Spruce

Twig

Duck Mountain Provincial Park
15-May-2015

Note the leaves are borne singly and are spirally arranged.

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Glauca: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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twigs glabrous; NOT [twigs hairy or minutely hairy]

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leaves mostly less than 1.5 cm long; NOT [leaves mostly over 1.5 cm long]

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leaves sharp-pointed; NOT [leaf apex flattened and short-pointed], NOT [leaves usually blunt at apex]

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seed cones 2.5-5 cm long; NOT [seed cones usually less than 2.5 cm long], NOT [cones 3-8 cm long]

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seed cones oblong-cylindrical; NOT [seed cones oval or ovoid]

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seed cones brown when mature; NOT [seed cones often purplish]

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seed cones falling the first winter; NOT [seed cones remaining on tree for several years]

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seed scales entire; NOT [seed scales erose]

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seed scales broadly rounded at apex; NOT [seed scales truncate to pointed at apex]

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seed scales stiff; NOT [seed scales flexible]

 

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Picea: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. 
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leaf scars prominent on twigs

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branches (from which the needles have fallen) rough with peg-like projections; NOT [branches not rough with peg-like projections]

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leaves borne singly; NOT [leaves borne in clusters of 2 to many]

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leaves not appearing 2-ranked; NOT [leaves appearing 2-ranked]

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leaves 4-sided; NOT [leaves flattened]

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leaves not narrowed at the base

 

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Pinaceae: Answers to key questions in Budd's Flora  leading to this family. 
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leaves borne singly and alternately, or in clusters; NOT [leaves opposite or whorled]

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leaves not overlapping; NOT [leaves often overlapping]

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leaves linear or needle-shaped; NOT [leaves scale-like or awl-shaped]

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plants monoecious; NOT [plants dioecious]

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ovulate cones present; NOT [ovulate cones absent, the seeds solitary, surrounded by a red fleshy cup-like aril]

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ovulate cones woody

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ovulate cones with many scales; NOT [ovulate cones with 12 scales or less]

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ovulate cones with spirally arranged scales; NOT [ovulate cones with opposite or whorled scales]

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ovulate cones several to many seeded