Perennials; caudex branched, (woody, pulvinate-cespitose, forming hard, hemispherical mats, basal parts covered with persistent leaf bases); densely (silvery gray) pubescent, tri-chomes mostly 5-rayed, rays bifurcate, slightly fused at base, (umbonate, strongly tuberculate except nearly smooth over umbo). Stems several from base (crowded), erect, not exceeding leaves. Basal leaves: usually absent. Cauline leaves: (petiole not differentiated from blade); blade linear-oblanceolate, 3-8(-13) mm, margins entire. Racemes (secund), dense, corymbose, (few-flowered, not or barely exceeding leaves). Fruiting pedicels (ascending to divaricate-ascending, straight), 3.5-6 mm. Flowers: sepals (yellow-green), linear to narrowly triangular, 3.7-4.8 mm, (lateral pair subsaccate); petals (deep yellow, slightly orange in center), spatulate, 5.2-6.5 mm, (claw joined at right angle). Fruits (becoming reddish or copper-colored in age), ovate, often slightly compressed (at margins apically), 3-5 mm, (apex acute); valves (not retaining seeds after dehiscence), glabrous; (septum perforate or not); ovules 4-8 per ovary; style 1.8-3 mm. Seeds plump or slightly flattened, (strongly mucilaginous).
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