Flowers: June - August
Conservation Status: Sensitive in Washington (WANHP)
Perennials not forming clumps; base unbranched or branched; stems typically 1-3.5 dm, occasionally branched distally, pubescent with simple trichomes and 3-6-rayed trichomes.
Basal leaves forming rosettes, petioles ciliate with simple trichomes to 0.8 mm, blades narrower toward base, 1-3.7 cm long and 2-7 mm broad, margins entire or finely toothed, pubescent above and beneath, stalked trichomes with up to 8 rays, 0.2-0.5 mm; cauline leaves usually 5-20, sessile, ovate to lanceolate or sometimes narrower toward base, margins entire or dentate, pubescent above and beneath, upper surface sometimes with simple trichomes.
Inflorescence racemose, generally 18-52 flowered, rarely up to 72 flowered, usually bracteate proximally; rachis rigid, pubescence same as stem; fruiting pedicels spreading-ascending to nearly erect, not curved, 3-13 mm, same pubescence as stem; sepals 4, green to yellowish, oblong, 2.2-3 mm, pubescent with simple and branched trichomes; petals 4, yellow, slender and narrower toward base, 3.5-5 mm long and 1.5-2.5 mm broad; anthers approximately 0.5 mm, ovate.
Siliques, 6-17 mm long and 2-3.5 mm broad, often partially appressed to rachis, linear-lanceolate to lanceolate or may be slender and narrower toward base, twisted or plane, flattened; valves pubescent with simple trichomes and 2-4-rayed trichomes on short stalks; ovaries containing 28-38 or more ovules; seeds oblong, 0.9-1.3 mm long and about half as wide.