General:
Annual herb from a slender taproot; stems usually branched from leafy base, 4-35 cm tall, short-hairy with simple and 2-to 5-branched hairs.

Leaves:
Basal leaves oblanceolate to egg-shaped, entire or obscurely toothed, 6-30 mm long, 2-10 mm wide, short-stalked, with coarse, cross-shaped hairs; stem leaves mostly unstalked, reduced upward.

Flowers:
Inflorescence of 1-several long, narrow, 1-sided clusters with well-spaced, inconspicuous flowers; petals white, 1-2 mm long, spoon-shaped, sometimes lacking; sepals about 1 mm long, dropping early.

Fruits:
Silicles, 2.0-2.5 mm wide, round, flattened parallel to the partition, often with 2 types of hairs, the larger hairs flat and hooked, the smaller hairs branched or lacking; styles 0.2-0.3 mm; stalks bent downward, 1-4 mm long; seeds 1, flat.

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

Synonyms and Alternate Names:
Athysanus pusillus var. glabrior S. Watson
Thysanocarpus pusillus Hook.