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

Cardamine hirsuta L.
hairy bitter-cress
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Rosemary Taylor  Email the photographer   (Photo ID #24291)

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Distribution of Cardamine hirsuta
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Species Information

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General:
Annual herb from slender taproot; stems usually solitary, stiff, 5-30 cm tall, usually glabrous.
Leaves:
Basal leaves in compact rosettes, compound, stalked, hairy-fringed, pinnate with 2-3 or more pairs of egg-shaped to orbicular leaflets and a larger, somewhat kidney-shaped terminal leaflet; stem leaves few, almost unstalked, with smaller, narrower leaflets; all leaflets wavy-margined to shallowly few-lobed, sparsely stiff-hairy above and on the margins.
Flowers:
Inflorescence a simple raceme; flower stalks ascending, 5-10 mm long; petals white, narrow, 1.5-2 mm long; sepals half as long as petals, greenish-violet with narrow white margins; stamens 4.
Fruits:
Siliques, erect, 1.8-2.5 cm long, about 1 mm wide; styles 0.5-2 (6) mm long; seeds 22-36.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry waste places, roadsides and open woods in the lowland zone; frequent in SW BC; introduced from Eurasia.

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.

Taxonomic and Nomenclatural Links

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General References