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Annual herb from a taproot; stems erect, several, simple or few-branched, 15-40 cm tall.
Basal leaves numerous, tufted, oblanceolate to spoon-shaped, 1.5-4 cm long, soon deciduous; stem leaves opposite, 2-4 pairs, narrowly lanceolate to oblanceolate, 1.5-5 cm long.
Inflorescence of 1 to few terminal or axillary flowers on long, naked stalks; corollas deep blue or purplish, tubular, 4-lobed, sometimes 3-lobed, the lobes minutely jagged and with a few slender lateral teeth, rounded at the tips, not fringed in the throat, 3.5-5.5 mm long; calyces 15-25 mm long, 1/2 the length of the corollas, the lobes pointed and subequal; stamens shorter than the corolla lobes; anthers 3-4 mm long.
Capsules, cylindric; seeds oblong, angular, wingless, finely pimpled, dark-brown, 0.5 mm long.
Source: The Illustrated Flora of British Columbia