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

Arabis nuttallii B.L. Rob.
Nuttall's rockcress
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #15935)

E-Flora BC Static Map
Distribution of Arabis nuttallii
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Species Information

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General:
Perennial herb from a simple stem-base; stems simple, one to several, 10-30 cm tall, with long, simple or 2-branched hairs at the bases, becoming glabrous above.
Leaves:
Basal leaves numerous in a rosette, egg-shaped, 1-3 cm long, 3-5 mm wide, drying and remaining prominent, stalks and blades with many long, simple or 2-branched hairs; stem leaves unstalked to short-stalked, not clasping stem, lanceolate to oblanceolate, 8-12 mm long, 2-5 mm wide, long hairs on margins and undersurface.
Flowers:
Racemes few-flowered (5-25); petals 5-6 mm long, white to pale lavender; outer two sepals not bulging on one side at the base.
Fruits:
Siliques, angled upward, straight to slightly curved, 1-2 cm long, 1-1.5 mm wide; seeds in 1 row, 0.75-1.0 mm long, wingless.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic meadows, talus slopes, rock outcrops, open forests and roadsides in the montane to alpine zones; infrequent in SE BC; N to YT, E to SW AB and S to WY, UT and NV.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Arabis nuttallii

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) 820 1640 2257
Slope Gradient (%) 0 19 72
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
10 4 330
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 4 6
Modal Nutrient Regime
Class
E
Number of field plots
 species was recorded in:
24
Modal BEC Zone Class
AT
All BEC Zones (# of stations/zone) species was recorded in: AT(10), BG(1), ESSF(2), IDF(3), IMA(1), SBPS(3)

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.

Synonyms and Alternate Names

Arabis bridgeri M.E. Jones
Arabis macella Piper
Boechera nuttallii (B.L. Rob.) Dorn

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References