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

Introduction to Vascular Plants


© Jim Riley     (Photo ID #28455)


E-Flora BC Static Map

Distribution of Idahoa scapigera
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Species Information

Annual herb from a slender taproot; stems several, scapose, glabrous.
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.
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.
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.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and 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.

SourceThe Illustrated Flora of British Columbia