Sisymbrium loeselii L.
Loesel's tumble-mustard (small tumbleweed mustard)
Brassicaceae (Mustard family)

Introduction to Vascular Plants


© Amelie Rousseau     (Photo ID #6478)


E-Flora BC Static Map

Distribution of Sisymbrium loeselii
Click here to view the full interactive map and legend

Species Information

Annual herb from a taproot; stems erect, 0.4-1.2 m tall, freely branched, sparsely to densely hairy with spreading hairs or the hairs pointing backward, glabrous above.
Broadly deltoid-lanceolate to lanceolate, to 15 cm long, short-stalked, pinnately-cut, the segments pointing backwards, usually with large, long-pointed, terminal lobes irregularly saw-toothed to toothed.
Racemes to 40 cm long in fruit; petals lemon yellow, 6-8 mm long, broadly egg-shaped with long narrow claw; sepals about 3.5 mm long, lanceolate.
Siliques, ascending to erect but not appressed, straight or slightly arcuate, 2-3.5 cm long, round in cross section, segments prominently 3-nerved; beaks about 0.5 mm long; fruiting stalks spreading to ascending, 7-20 mm long, slender; seeds uniseriate, about 0.7 mm long, not gelatinous when wet.

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.


Ecological Framework for Sisymbrium loeselii

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)
646 311 1244
Slope Gradient (%)
11 0 63

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

227 12 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 1 6
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BG(20), IDF(6), PP(1)

Habitat and Range

Mesic to dry fields and waste places in the lowland, steppe and montane zones; frequent in S BC; introduced from Eurasia.

SourceThe Illustrated Flora of British Columbia