General:
Annual or biennial herb from a slender taproot; stems erect or ascending with several ascending branches near the base, 10-25 (40) cm tall, the shoots grey-hairy with starlike hairs.

Leaves:
Basal leaves lacking; stem leaves narrowly oblanceolate, entire, 5-25 mm long, grey with starlike down.

Flowers:
Inflorescene elongate; flower stalks spreading, 2-5 mm long; flowers about 3 mm in diameter; petals cream or white, linear, 3-4 mm long; sepals about 2 mm long, soft-hairy and with starlike hairs, persistent in fruit.

Fruits:
Silicles, 3-4 mm long, almost circular (oval), starlike hairy, strongly flattened near the edges but bulging in the middle, 2 seeds in each chamber; styles up to 0.5 mm long.

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:
Alyssum calycinum L.
Clypeola alyssoides L.