Picea mariana
 
Black Spruce

Twig

Duck Mountain Provincial Park
15-May-2015

Note the leaves are borne singly and are spirally arranged.

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Mariana: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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twigs dull brown

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twigs hairy; NOT [twigs glabrous or minutely hairy]

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leaves usually blunt at apex; NOT [leaves more pointed]

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

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

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

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

 

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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