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)

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

Species Information

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



General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
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

Ecology

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

Minimum

Average

Maximum

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
Class
E
Number of field plots
 species was recorded in:
2
Modal BEC Zone Class
PP
All BEC Zones (# of stations/zone) species was recorded in: ICH(1), PP(1)

Climate

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