Lesquerella arenosa
 
Sand Bladderpod

Upper Stem

Hidden Valley
Approx. 15 mi. North of Regina at Qu'Appelle Valley
13-May-06

This species has been misidentified as L. ludoviciana (as in Budd's Flora).  However, L. ludoviciana is not found in Saskatchewan.  The key answers which separate L. arenosa from L. ludoviciana in Flora of the Great Plains are coloured red.  Note that the inner basal leaves of the specimens of L. arenosa pictured on this site are slightly involute.

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Arenosa:  Answers to key questions in Budd's Flora, Flora of Alberta, and Flora of the Great Plains leading to this species.  
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plants annual or short-lived perennials; NOT [plants perennial]

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plants NOT densely tufted

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inner basal leaves flat; NOT [inner basal leaves involute]

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inner basal leaves generally dentate or at least angular; NOT [inner basal leaves usually entire]

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inflorescence and infructescence often secund

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pedicels distinctly recurved; NOT [pedicels erect, straight or slightly curved], NOT [pedicels generally sigmoid]

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flowers reddish yellow; NOT [flowers bright yellow]

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styles generally 3.0-5.5 mm long; NOT [styles generally 1.0-2.5 mm long]

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pods more or less globose; NOT [pods ovate]

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pods densely pubescent; NOT [pods glabrous or nearly so]

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valves usually glabrous on the interior; NOT [valves often pubescent on the interior]

 
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Lesquerella: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus.   
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plants perennial; NOT [plants mostly annual]

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plants NOT alpine

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hairs on plant branched or starry; NOT hairs on plant simple

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leaves less than 1 cm wide; NOT [leaves up to 1 cm wide]

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leaves lanceolate to oblanceolate; NOT [leaves mostly spatulate]

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leaves more or less entire; NOT [leaves deeply serrate to pinnate or bipinnate]

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upper stem leaves, if any, NOT auriculate and clasping

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petals yellow; NOT [white]

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petals 4-8 mm long; NOT [petals 9-12 mm long]

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pods not inflated; NOT [pods conspicuously inflated]

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pods not much flattened, more or less round in cross section; NOT [pods much flattened, at least twice as wide as thick], NOT [pods compressed at right angles to the central partition]

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pods usually not more than 3 times as long as wide; NOT [pods usually at least 4 times as long as wide]

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pods often less than 8 mm long; NOT [pods 8-15 mm long]

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valves of pods with no nerves; NOT [valves of pods with one nerve]

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pods opening lengthwise; NOT [pods not opening or breaking off at maturity]

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seeds flat; NOT [seeds round]

 
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Cruciferae:  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 4

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corolla regular in shape

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petals 4; NOT 5

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stamens usually 6, four long and two short; NOT [stamens 6, of equal length], NOT [stamens usually more than 10]

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ovary superior; NOT inferior

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