Lobelia kalmii
 
Kalm's Lobelia

Corolla Tube, Inner Surface

Highway # 3, West of Hudson Bay
25-July-2019

The corolla forms a two-lipped tube which is split at the top.  This tube has been spread flat to reveal its inner surface. 

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Kalmii: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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plants terrestrial; NOT [plants aquatic, with leaves all submerged]

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plants of moist marshy places; NOT [plants of drier soils]

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stems leafy; NOT [leaves all basal]

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stem leaves linear; NOT [stem leaves lanceolate to oblanceolate to ovate]

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stem leaves less than 10 mm wide; NOT [stem leaves usually more than 10 mm wide]

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flowers in a loose raceme, on lax pedicels; NOT [flowers in a spike-like raceme]

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racemes few-flowered; NOT [racemes many-flowered]

 
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Lobelia: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. 
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perennials; NOT annuals

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corolla-tube split to near the base on the upper side

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capsule 2-celled; NOT capsule 1-celled

 

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Lobeliaceae: Answers to key questions in Budd's Flora  leading to this family. 
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herbs

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

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plants often with milky juice; NOT [plants without milky juice]

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NOT [climbing plants with tendrils]

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leaves basal or alternate; NOT [leaves opposite]

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flowers NOT in heads, NOT in spikes

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flowers with two floral rings

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petals wholly or partly united forming a tube or bell

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corolla irregular, split down one side; NOT [corolla regular, bell-shaped]

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anthers united into a tube; NOT [anthers free]

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ovary inferior; NOT superior