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

Lepidium virginicum L.
tall pepper-grass (Virginia pepperweed)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #6948)

E-Flora BC Static Map
Distribution of Lepidium virginicum
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Lepidium virginicum var. menziesii

Species Information

Click on the image below to view an expanded illustration for this species.

Annual herb from a slender taproot; stems erect, 15-60 cm tall, simple below, freely branched above, hairy to nearly glabrous.
Basal leaves egg-shaped, pinnately cut or merely toothed, 2-15 cm long, 0.5-5 cm wide, usually lacking at anthesis; stem leaves gradually reduced upwards, entire or rarely toothed.
Racemes numerous, elongate, many-flowered; flower stalks spreading, 2-6 mm long, round in cross section to somewhat flattened, glabrous to finely short-hairy; petals white, 1-3 mm long, conspicuous, as long as or slightly longer than the sepals; sepals about 1 mm long, glabrous or slightly soft-hairy.
Silicles, orbicular to nearly round, 2.5-4 mm long, scarcely margined, shallowly notched (to 0.2 mm), usually glabrous; beaks short, well included within the notch.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry disturbed areas and waste places in the lowland zone; infrequent in SW BC, known from S Vancouver Island, the Gulf Islands and the adjacent mainland; S to OK, TX, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Lepidium virginicum

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) 800 913 1060
Slope Gradient (%) 0 24 55
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
60 180 298
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 3 6
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), IDF(5), PP(2)


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