Mimulus glabratus
 
Smooth Monkeyflower

Stamens

Fen at Intersection of Highways 47 and 247
18-July-2017

The lower lip has been removed from the corolla and then spread flat.  This is the adaxial side.  Note the four stamens are in two pairs of unequal length, i.e. they are didynamous.

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Glabratus: Answers to key questions in Budd's Flora leading to this species. 
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stems mostly creeping; NOT [stems mostly erect]

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calyx distinctly 2-lipped; NOT [calyx regular or nearly so]

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calyx 5-12 mm long; NOT [calyx 12-17 mm long]

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corolla 12-25 mm long; NOT [corolla 5-12 mm long]; NOT [corolla 25-45 mm long]

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flowers yellow; NOT [flowers blue or crimson]

 

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Mimulus: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. 
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stems leafy; NOT [leaves in a basal rosette]

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leaves all opposite; NOT [leaves alternate], NOT [upper leaves often whorled]

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leaves simple, neither pinnately lobed nor cleft; NOT [leaves pinnately lobed or cleft]

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leaves lanceolate to ovate or rotund; NOT [leaves narrowly linear, 1-6 mm wide]

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leaves dentate; NOT [leaves entire]

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floral leaves or bracts usually green; NOT [floral leaves or bracts brightly colored, usually red or yellow, or shades of these colours], NOT [upper leaves violet-tinged]

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flowers in the axils of leaves or bracts; NOT [flowers in a terminal spike], NOT [flowers solitary]

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flowers large and showy, 10-35 mm long; NOT [flowers less than 10 mm long]

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calyx 5-lobed; NOT [calyx 4-lobed]

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calyx green; NOT [calyx violet-tinged]

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corolla usually much longer; NOT [corolla 7-14 mm long]

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corolla not spurred at the base

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NOT [corolla green, tinged reddish brown to purple]

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anther-bearing stamens 4

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staminodes absent or inconspicuous

 

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Scrophulariaceae: 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 green or with some chlorophyll; NOT [plants parasitic or saprophytic, without chlorophyll]

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plants not aquatic

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stems not square

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leaves not bearing bladders

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flowers not in heads or spikes; NOT [flowers in long or short spikes], NOT [flowers in heads or in form resembling a head]

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flowers with two floral rings

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corolla irregular; NOT [corolla regular]

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petals wholly or partly united forming a tube or bell]

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ovary superior; NOT [ovary inferior]

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fruit a many-seeded capsule; NOT [fruit with 4 nutlets]