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

Arabis eschscholtziana Andrz.
Eschscholtz's rockcress (Eschscholtz's hairy rockcress)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #7374)

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Distribution of Arabis eschscholtziana
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Species Information

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General:
Biennial or short-lived perennial herb usually from an unbranched stem-base; stems 1-few, 20-80 cm tall, stiff-hairy basally, glabrous above.
Leaves:
Basal leaves oblanceolate, 2-8 cm long, 0.5-2 cm wide, narrowed to a slender, fringed stalk, glabrous to sparsely hairy above and below; stem leaves broadly egg-shaped to oblanceolate, unstalked, with clasping bases and often toothed margins, more or less glabrous.
Flowers:
Few to many-flowered racemes; petals 6-9 mm long, white to pale pink; sepals bulging on one side at the base.
Fruits:
siliques, erect to slightly spreading away from the axis of the inflorescence, straight or slightly curved, 5-8 cm long, 1-2 mm wide, glabrous; seeds in 1 row, 1-2 mm long, wingless or with very narrow wings.
Notes:
Often included in A. hirsuta, as the coastal form of that species.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic meadows, streambanks, rocky slopes and disturbed areas in the lowland to alpine zones; frequent in BC in and W of the Coast-Cascade Mountains; N to AK and YT and S to W ID and OR.

Source: The Illustrated Flora of British Columbia

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 hirsuta subsp. eschscholtziana (Andrz.) Hultén
Arabis hirsuta var. eschscholtziana (Andrz.) Rollins

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References