Herbs perennial, cespitose, (3-)7-25(-30) cm tall, often woody at base, canescent throughout with sessile, 7-16-rayed stellate trichomes. Stems usually erect or ascending, often several from caudex, sterile shoots often several. Cauline leaves subsessile; leaf blade linear-lanceolate to linear-oblong, 0.4-2(-3) cm × (0.5-)1-3 mm, gradually smaller upward, base attenuate, apex acute. Racemes corymbose, simple on each stem. Fruiting pedicels divaricate, (3-)4-7(-9) mm, stout, straight, uniformly stellate or sometimes also with simple and forked trichomes. Sepals oblong, 2.5-3 × 1-1.5 mm, deciduous or rarely persistent, stellate. Petals yellow, broadly spatulate, (4.5-)5-7(-8) × (1-)2-3 mm, glabrous outside, caducous, base attenuate, apex rounded or emarginate. Filaments 2.5-4 mm; median pairs slender or slightly flattened above base, neither winged nor toothed; lateral pair with a minute, unilateral tooth just above base; anthers narrowly oblong, 0.7-1 mm. Ovules 2 per locule. Fruit broadly oblong or oblong-obovate, (3-)4-7 × 3-5 mm, apex emarginate and to 0.5 mm deep; valves not veined, 1 inflated, another concave, margin often not flat, glabrous or sparsely stellate; style 1.5-2.8(-3.5) mm, slender, glabrous. Seeds 2 per locule, ovate or oblong, 1.3-2 × 0.9-1.2 mm, compressed, not margined. Fl. May-Jun, fr. Jul-Aug. 2n = 16.
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