Annual herb from fibrous roots; stems erect to decumbent, 5-20 cm tall, simple or few-branched, smooth to obscurely and minutely glandular-hairy above.
Opposite, unstalked, lanceolate, 8-25 mm long, sparingly and minutely toothed toward the tip or entire, gradually long-tapering to the pointed tip, smooth.
Inflorescence of single small flowers on stalks in the axils of reduced upper leaves, the stalks stout, 1-2 cm long, without bractlets at the top; corollas tubular, 5-8 mm long, 2-lipped, the upper lip shallowly 2-lobed, the lower lip 3-lobed, the tube yellow, the lobes white sometimes pink-tinged; calyces 4-7 mm long, to 10 mm in fruit, the 5 distinct sepals more or less equal, lanceolate, long-pointed at the tip; fertile stamens 2.
Capsules, egg- to globe-shaped, 4-5 mm long; seeds numerous, oblong-egg-shaped, longitudinally ribbed with faint cross ridges.
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