Perennials; (cespitose, sometimes forming mats); caudex branched (with persistent leaf bases, branches creeping, terminating in scapes or sterile rosettes); scapose. Stems unbranched, (0.3-)0.4-1.6(-1.9) dm, pubescent, trichomes sessile, pectinate, 0.1-0.4 mm, (parallel to long axis of stem, sometimes with irregularly 2-4-rayed ones, 0.2-0.6 mm). Basal leaves rosulate; subsessile; blade narrowly oblanceolate to linear, (0.4-)0.6-1.3(-2) cm × 0.9-2.2 mm, margins entire (not ciliate), surfaces pubescent with subsessile or sessile, pectinate trichomes, 0.2-0.5 mm. Cauline leaves 0. Racemes 5-22-flowered, ebracteate, considerably elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels divaricate-ascending, straight, (5-)7-14 mm, sparsely pubescent, trichomes pectinate. Flowers: sepals broadly ovate, 2-3.2 mm, pubescent, (trichomes pectinate); petals yellow, obovate to spatulate, 4-6.5 × 1.5-2.5 mm; anthers ovate 0.4-0.5 mm. Fruits ovoid, plane, slightly inflated basally, 4-6(-7) × 2-3 mm; valves pubescent, trichomes usually sessile, pectinate, 0.2-0.5 mm, rarely with simple ones; ovules 4-8 per ovary; style 0.5-1.5 mm. Seeds oblong, 1.1-1.5 × 0.6-0.8 mm. 2n = 22.
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