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)

E-Flora BC Static Map
Distribution of Idahoa scapigera
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

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.

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


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

Additional Photo Sources

General References