Impatiens nolitangere
 
Western Jewelweed

Detached Stamens

4 km North-West of Craven,
on West Side of Last Mountain Lake
18-Aug-2014

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Nolitangere: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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flowers gradually tapering to spur; NOT [flowers sharply contracted to spur]

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spur recurved but not abruptly so; NOT [spur bent back parallel with the sac]

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flowers pale yellow; NOT [flowers usually bright orange or reddish yellow]

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flowers not spotted

 

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

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flowers with two floral rings, and with each petal distinct from the others

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

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sepals 3

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one sepal petal-like and spurred

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stamens 10 or fewer; NOT [stamens usually more than 10]

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ovary superior; NOT [ovary inferior]

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carpels 3-5; NOT [carpels 1 or 2]

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fruit an explosive capsule