Peritoma serrulata (Pursh) DC
Rocky Mountain bee plant (spider-flower; stinking-clover)

Introduction to Vascular Plants


© RĂ©al Sarrazin     (Photo ID #26676)


E-Flora BC Static Map

Distribution of Peritoma serrulata
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Species Information

Annual herb from a fibrous root; stems erect, branched, 0.1-1.5 m tall, glabrous to sparsely soft-hairy.
Basal leaves lacking; stem leaves with 3 leaflets, these linear-elliptic to narrowly lanceolate or oblanceolate, 1-7 cm long, stalked.
Inflorescence of bracted racemes which elongate with maturity; corollas reddish-purple to pale pink or rarely white; petals 4, narrowly egg-shaped, 8-11 mm long; calyx lobes 4, abruptly pointed, not much longer than the tube; stamens 6, twice as long as the petals, with pink filaments.
Podlike capsules, spreading to drooping, 3-6 cm long; seeds roughened with blisters.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

Moist to mesic sandy slopes and waste places in the steppe and lower montane zones; infrequent in SC and SE BC; E to MN and S to IL, NM and CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Cleome serrulata Pursh