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General:
Annual herb from a taproot; stems erect, solitary, simple, smooth, 10-60 cm tall.
Leaves:
Basal leaves soon deciduous; stem leaves opposite, lowermost leaves spoon-shaped or egg-shaped with short stalks, others more oblong or elliptic and stalkless, smooth, 1-6 cm long, 3-22 mm wide.
Flowers:
Inflorescence of terminal, more or less headlike clusters; corollas white to pale or dark pink 1.5-9.5 mm long, 2-lobed, with a slender spur, the tip usually enlarged; calyces lacking.
Fruits:
Achenes, dry, 2-4 mm long, convex side of body usually keeled, not grooved lengthwise, winged or not, the wing margins not thickened, hairy near the tips or along the margins.
Notes:
Two closely related varieties occur in our region
1. Corollas 1.5-3.5 mm long, white to pale pink ..... var. major (Fisch. & C.A. Mey.) Dyal
1. Corollas 4-9.5 mm long, pale to dark pink ..... var. congesta
Source: The Illustrated Flora of British Columbia
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