Lewisia triphylla (S. Watson) B.L. Rob.
three-leaved lewisia (threeleaf lewisia)
Montiaceae (Purslane family)
(Previously in Portulacaceae)

Introduction to Vascular Plants


© Jocie Brooks     (Photo ID #71175)


E-Flora BC Static Map

Distribution of Lewisia triphylla
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Species Information

Perennial herb from a shallow, roundish, bulb-like corm 3-9 mm wide; stems ascending to erect, solitary or several, branched, threadlike below ground, 3-10 cm long.
Basal leaves narrowly linear, 2-5 cm long, soon deciduous or sometimes lacking; stem leaves 2-3 (5) semi-whorled, linear, 1-4.5 cm long.
Inflorescence simple to compound and flat-topped with 1-25 flowers on stalks 5-15 mm long; floral bracts solitary at the base of most stalks; petals 5-9, white and pink-veined to pink, oblanceolate, 4-7 mm long; sepals 2, oval, 2-3 mm long lengthening to 4.5 mm in fruit; stamens 3-5.
Capsules, egg-shaped, membranous; seeds 10-20, dark brown, smooth, shiny, 1 mm long.

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 gravelly slopes, meadows, open forests and sandy snowbed sites from the montane to alpine zones; rare on Vancouver Island and SE BC; S to MT, CO and CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Claytonia triphylla S. Watson
Erocallis triphylla (S. Watson) Rydb.