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

Rorippa curvipes Greene
bluntleaf yellowcress (blunt-leaved yellow cress)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #20303)

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Distribution of Rorippa curvipes
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Species Information

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Annual, or rarely, short-lived perennial; stems erect to somewhat decumbent, 10-50 cm long, single to several, usually branched at base, sparingly to moderately stiff-hairy below.
Basal leaves egg-shaped to oblanceolate, 1.5-6 cm long, 5-20 mm wide, entire to shallowly wavy-margined and lobed to pinnately-cut with egg-shaped, wavy-margined to entire segments, generally stalked, lower surfaces glabrous, upper with few hairs; stem leaves oblong, egg-shaped, or oblanceolate, 4-8 cm long, 5-15 mm wide, generally with clasping, ear-like lobes, entire or round-toothed to saw-toothed.
Inflorescence of 2-5 (7) mm long, divergent to ascending stalks; petals very pale yellow, oblong to spoon-shaped, 1-1.5 mm long, 0.2-1 mm wide; sepals 1-1.5 mm long, glabrous, not pouched at base, deciduous shortly after anthesis.
Siliques, oval to oblong-lanceolate, slightly curved inward, 3-6 (8) mm long, 1.5-2.5 mm wide, blunt to obtuse at the tips; beaks 0.2-1 mm long; seeds brown, about 0.5 mm long, minutely honeycombed and pimpled, 10-80.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist sandy soils in the lowland to lower montane zones; infrequent in S BC east of the Coast-Cascade Mountains; E to MI, MO and TX, and S to CA and N MX.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Rorippa curvipes

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) 657 842 1028
Slope Gradient (%) 0 7 15
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
210 210 210
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 6 8
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: ICH(1), PP(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