Perennials; (cespitose); caudex branched (with persistent leaf remains); sometimes scapose. Stems unbranched, (0.2-)0.4-1.5(-1.9) dm, pubescent throughout, trichomes simple, 0.4-0.8 mm, and short-stalked, 4-10-rayed, 0.05-0.3 mm, (mostly branched distally). Basal leaves rosulate; petiolate; petiole base and margin ciliate, (trichomes simple, 0.3-1 mm); blade oblanceolate to lanceolate, 0.4-1.5 cm × 1.5-5 mm, margins entire, surfaces pubescent with simple and stalked, 2-or 3-rayed trichomes, 0.4-1 mm, with short-stalked, 8-12-rayed, stellate ones, 0.1-0.2 mm. Cauline leaves 0-2; sessile; blade oblong to broadly ovate, margins entire, surfaces pubescent as basal. Racemes 5-13(-18)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem distally. Fruiting pedicels divaricate to ascending, straight, 2-6(-8) mm, pubescent as rachis. Flowers: sepals ovate, 2-3 mm, pubescent, (trichomes simple and short-stalked, mostly 2-rayed); petals white, spatulate to obovate, 3.5-5 × 1.5-2.5 mm; anthers ovate, 0.2-0.3 mm. Fruits elliptic to oblong, plane, slightly flattened, 4-8(-9.5) × 2-3(-4) mm; valves pubescent, trichomes short-stalked, (2-)5-12-rayed, 0.05-3 mm; ovules 24-36 per ovary; style 0.2-0.8 mm (stigma considerably wider than style, often appearing 2-lobed). Seeds ovate, 0.7-1 × 0.5-0.6 mm. 2n = 64.
Home