Mimulus glabratus
 
Smooth Monkeyflower

Calyx Split and Spread Out

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

The calyx tube pictured here was split and then spread flat.  This is the adaxial side.  Note the calyx tube is five-lobed, the uppermost lobe larger than the other four. Note also the prominent ribs.

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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]