General:
Annual herb from a taproot, short, stiff, appressed-hairy throughout; stems 1-several, sometimes branched, 10-70 cm tall.

Leaves:
Lowermost leaves oblanceolate and soon deciduous, others linear to lanceolate or oblong, unstalked, 1.5-6 cm long and 2-15 mm wide, entire, alternate.

Flowers:
Inflorescence of several narrow clusters (compact at first, elongate and open in fruit); flowers solitary in axils of upper leaves, on short (1 mm) stalks that are erect to ascending in fruit; corollas funnel-shaped, 5-8 mm long, white or bluish-white; petals fused at base into a narrow tube that flares (2-4 mm wide) at top to 5 lobes, lacking bulges but with 5 hairy lines in the throat.

Fruits:
Nutlets usually 4, clustered together, brownish, wrinkled, pitted, sometimes pimply.

Source:  The 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.

Illustration Source:  The Illustrated Flora of British Columbia