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

Erysimum cheiranthoides L.
wormseed mustard (wormseed wallflower)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #25006)

E-Flora BC Static Map
Distribution of Erysimum cheiranthoides
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Species Information

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Annual or biennial herb from a taproot; stems simple or branched, leafy, 0.2-1.0 m tall, sparsely hairy with 2-pronged hairs.
Basal leaves lacking; stem leaves linear to lanceolate or oblanceolate, entire or minutely toothed, 2-8 cm long, 2-18 mm wide, finely hairy with 3-pronged hairs.
Racemes bractless; flower stalks 4-15 mm long, spreading or spreading-ascending; petals pale yellow, 3.5-5 mm long; sepals yellowish or greenish, 2-3 mm long.
Siliques, ascending to erect, 1.5-2 (3) cm long, about 1 mm wide, round in cross section, finely appressed-hairy; beaks 0.5-1 mm long; seeds 1-1.2 mm long, wingless.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic roadsides, fields and waste places in the lowland, steppe and montane zones; frequent throughout BC except the Queen Charlotte Islands and adjacent coast; circumboreal, N to AK, YT and NT, E to NF and S to NC, MI, UT and CA; Eurasia, native status uncertain.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Erysimum cheiranthoides

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) 585 993 1770
Slope Gradient (%) 0 19 75
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
185 243 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 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(3), MS(1), PP(1), SBPS(1), SBS(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.

Synonyms and Alternate Names

Cheirinia cheiranthoides (L.) Link
Erysimum cheiranthoides subsp. altum Ahti
Erysimum cheiranthoides subsp. cheiranthoides

Taxonomic and Nomenclatural Links

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General References