E-Flora BC: Electronic Atlas of the Flora of British Columbia

Lepidium perfoliatum L.
clasping-leaved pepper-grass (clasping pepperweed)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Eileen Brown  Email the photographer   (Photo ID #20245)

E-Flora BC Static Map
Distribution of Lepidium perfoliatum
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Species Information

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Annual or biennial herb from a taproot; stems simple to freely branched, (10) 20-60 cm tall, usually somewhat short-hairy or hairy below, glabrous and glaucous above.
Leave of 2 distinct types; basal leaves 2- to 3- times pinnately cut into linear segments, to 10 cm long, long-stalked; lower stem leaves usually similar; middle and upper leaves suborbicular, deeply heart-shaped and clasping with slightly overlapping lobes, thus appearing as if the stem passes through the leaf.
Flower stalks slender, round in cross section, usually somewhat longer than the silicles; petals pale yellow, about 1.5 mm long (half length of sepals), narrowly spoon-shaped.
Silicles, spreading, suborbicular, 3-4 mm long and wide, glabrous or rarely slightly hairy, barely winged at the tips, slightly notched; sinuses about 0.2 mm deep; beaks about equalling the sinus.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry roadsides and waste places; infrequent in SC BC; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Lepidium perfoliatum

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 435 435 435
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
5 5 5
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BG(1)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References