General:
Perennial herb from a branched stem-base; stems several, 10-25 cm tall, glaucous and glabrous throughout or with a few hairs toward base.

Leaves:
Basal leaves in a prominent rosette, lanceolate, entire or few-toothed, 1.5-3 cm long, 0.3-7 mm wide, gradually narrowed to a long, slender stalk, glaucous and glabrous; stem leaves unstalked, ear-like at the bases, 2-3 cm long, 5-8 mm wide, entire or few-toothed, glabrous and glaucous.

Flowers:
Racemes few-flowered, symmetric; petals 6-10 mm long, purple; sepals not bulging on one side at the base.

Fruits:
Siliques, erect, somewhat spreading from the axis of the inflorescence, 3-6 cm long, 2-3 mm wide; seeds about 2 mm long, with wings less than 0.5 mm long.

Notes:
Arabis depauperata is tentatively placed here. It has been variously treated as a variety of A. lemmonii, as a synonym of A. microphylla and A. lyallii (Hitchcock et al. 1964, Rollins 1993), or as a separate species (Mulligan 1996).

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:
Arabis armerifolia Greene
Arabis densa Greene
Arabis lyallii S. Watson