Acer spicatum
 
Mountain Maple

Infructescence

Upper Escarpment of Pasquia Hills,
14 Miles North and 5.5 Miles West of Hudson Bay, SK
11-August-2017

Each fruit is a schizocarp, composed of two samaras.  A samara is a single seeded, indehiscent fruit equipped with a papery wing.  The entire structure is sometimes called a double samara.

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Spicatum: Answers to key questions in Budd's Flora leading to this species. 
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leaves lobed, not pinnate; NOT [leaves pinnate with 3 - 5 leaflets]

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leaves with lobes deltoid; NOT [leaves with lobes rhomboid]

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leaf base not chordate

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inflorescence a many-flowered racemose panicle; NOT [inflorescence a few-flowered corymb]

 

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Aceraceae: Answers to key questions in Budd's Flora leading to this family.  Not all the answers apply to all members of this family, but they all do apply to A. spicatum. 
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plants not climbing

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large or small trees, or large shrubs; NOT [low shrubs]; NOT [herbs]

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plants with normal leaves

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leaves opposite; NOT [leaves alternate]

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leaves palmately lobed

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flowers with two floral rings

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each petal distinct from the others

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fruit a 2-seeded samara; NOT [fruit fleshy]