Viola selkirkii
 
Long-Spurred Violet

Whole Plant in Ground

Brockelbank Hill, Highway 980 South of Armit
23-May-2017

Note the flowers are borne on a leafless stalk (scape) that arises directly from the rootstock.

A key to violets originally written by Vern Harmes and subsequently expanded by Glen Lee to include most of the violets found in Saskatchewan can be found here

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Selkirkii: Answers to questions in Lee/Harmes key leading to this species. 
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plant without a leafy flowering stem, the leaves and flower stem all grow from a central rootstalk; NOT [plant has leafy flowering stems]

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leaves not deeply divided or lobed, merely shallowly toothed; NOT [leaves cleft almost to their bases]

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flowers purple-blue or mauve; NOT [flowers yellow], NOT [flowers white]

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petals beardless; NOT [side petals or all petals bearded]

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flower spur is long, about 2/3 the length of the petal blade

 

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Violaceae: Answers to key questions in Budd's Flora leading to this family. 
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herbs; NOT [shrubs or trees]

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plants terrestrial or semiaquatic; NOT [plants aquatic, leaves submerged or floating]

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plants not with colored milky juice

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plants with more than one normal leaf

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some or all leaves alternate; NOT [leaves opposite, whorled, or basal]

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leaves with stipules; NOT [leaves without stipules, or having glands]

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flowers with two floral rings

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calyx regular; NOT [calyx irregular, some sepals smaller than others]

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corolla with each petal distinct from the others

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corolla irregular in shape; NOT [corolla regular in shape]

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corolla with one petal spurred or sac-like; NOT [corolla pea-like]

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stamens usually separate or partly so, not in a column; NOT [stamens numerous, united into a column]

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fruit a 3-valved capsule; NOT [fruit a legume]