Dalea purpurea
 
Purple Prairie-Clover

Upper Stem and Inflorescence

Oro Lake Regional Park
16-July-2010

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Purpureum: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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plants glabrous or sparsely pubescent; NOT [plants densely hairy throughout]

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leaflets 3-5; NOT [leaflets 5-9], NOT [leaflets 7-17]

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leaflets narrowly linear; NOT [leaflets linear-oblong]

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leaflets 1-1.5 mm wide; NOT [leaflets 2-3 mm wide]

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calyx villose-tomentose; NOT [calyx glabrous except the lobes]

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flowers rose or purple; NOT [flowers white]

 

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Petalostemon: Answers to key questions in Budd's Flora  and Flora of Alberta leading to this genus.  
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herbs; NOT [shrubs]

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the root tuber-like

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plants not climbing

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leaves pinnately divided; NOT [leaves palmately divided]

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the terminal leaflet normal; NOT [the terminal leaflet replaced by a tendril]

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leaves glandular-dotted

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flowers in dense, cylindrical spikes; NOT [flowers in racemes]

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flowers small, to 5mm; NOT [flowers 10-15 mm long]

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keel not truncate; NOT [keel mostly truncate]

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stamens 5; NOT [stamens 10]

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pods not segmented or jointed; NOT [pods segmented or jointed, breaking up at maturity]

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pods not prickly; NOT [pods with hooked prickles]

 

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

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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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flowers irregular in shape

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corolla pea-like; NOT [corolla with one petal spurred or sac-like]

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stamens usually separate or partly so, not in a column; NOT [stamens numerous, united into a column]

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fruit a legume; NOT [fruit a 3-valved capsule]