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

General:
Perennial herb from a creeping rhizome, finely dark-purplish or -blackish spotted almost throughout; stems erect, solitary, simple, smooth, 20-80 cm tall.

Leaves:
Basal leaves lacking; stem leaves opposite, unstalked, the upper leaves linear-lanceolate to elliptic-lanceolate, narrowed gradually to the bases, long-tapering to points, as much as 15 cm long, the lowermost leaves greatly reduced.

Flowers:
Inflorescence short, dense, slender, stalked, spike-like clusters in the axils of the two or three larger leaves near mid-stem, the individual flowers crowded and nearly unstalked; corollas pale yellow, dotted with red or purplish-black spots, 4-6 mm, deeply 5-lobed, the lobes somewhat clawed at the bases, linear-lanceolate, about twice the length of the calyces, sparingly spotted near the tips, sometimes bearing tiny toothlike, flat structures resembling fish scales just below each notch; calyces 5-lobed, the lobes lanceolate, 2-3 mm long, smooth, spotted; filaments distinct, exceeding the corolla lobes, smooth; styles about equalling the stamens; styles and ovaries spotted; sterile stamens lacking.

Fruits:
Capsules, breaking into valves at dispersal, about 2.5 mm long; seeds few.