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

Thelypodium laciniatum (Hook.) Endl. ex Walp.
Cut-leaved Thelypody (cutleaf thelypody; many-flowered thelypody; thick-leaved thelypody; thick-leaved thelypody (var. laciniatum))
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Jim Riley  Email the photographer   (Photo ID #1007)

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Distribution of Thelypodium laciniatum
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Thelypodium laciniatum var. laciniatum

Species Information

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Biennial herb from a taproot; stems erect, 0.2-1.5 (2.1) m tall, usually freely branched, solid, glabrous and somewhat glaucous.
Basal and lower stem leaves lanceolate to deltoid-lanceolate, less often oblong to egg-shaped, (4) 6-24 (45) cm long, laciniate to pinnately lobed, long-stalked; stem leaves numerous, reduced upwards, lanceolate to linear-lanceolate, often long-pointed, entire to toothed or laciniate, stalked, glabrous and somewhat glaucous.
Inflorescences densely flowered racemes, usually branched, slightly elongate in fruit; flower stalks horizontal to spreading, (1.5) 2.5-6.5 (15) mm long, straight or sometimes curved, stout, often flattened at base; calyces tubular to campanulate; petals white to purplish, 6-20 mm long, linear to narrowly spoon-shaped; sepals greenish-white to purplish, 3.5-7 mm long, slightly or not at all pouched at the base.
Siliques, widely spreading to ascending, 3-10 (12) cm long, about 1 mm thick, straight to strongly curved, very slightly flattened; beaks (0.5) 1-3 (4) mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry talus and rocky slopes in the steppe and lower montane zones; rare in SC BC; S to ID, NV and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Thelypodium laciniatum

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) 77 77 77
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]
6 6 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: CWH(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