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

Idahoa scapigera (Hook.) A. Nelson & J.F. Macbr.
scalepod (oldstem idahoa)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Jim Riley  Email the photographer   (Photo ID #28455)

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Distribution of Idahoa scapigera
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Species Information

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General:
Annual herb from a slender taproot; stems several, scapose, glabrous.
Leaves:
Basal leaves numerous in a rosette; flower stalks slender, usually 1-3 times as long as the blades, blades egg-shaped, entire to deeply lobed, 1-3 cm long; stem leaves lacking.
Flowers:
Solitary on leafless stems, (2) 3-13 cm tall; petals white, about equalling the sepals in length; sepals usually red or purplish, 1.4-2 mm long.
Fruits:
Silicles, oblong-oval to suborbicular, 6-12 mm long; seeds 6-12, about 5 mm long, 3.5-5 mm wide including about 1 mm wide wing.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist seepages to dry rocky slopes in the lowland, steppe and montane zones; rare in SW BC, known only from S Vancouver Island and the Gulf Islands, rare eastward in S BC; S to ID and CA.

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