Plants prostrate to ascending, 3-15 (-45) cm. Leaves not glaucous, in whorls of 3-8, basal rosette present, sometimes disappearing as plant matures; petiole 0.5-4 mm; blade linear to elliptic, obovate, or broadly spatulate, 5-40 × 0.5-15 mm, base cuneate, apex obtuse to rounded or acute. Inflorescences: flowers 2-6 in sessile, axillary umbels. Flowers: sepals green abaxially, white adaxially, oblong-elliptic, 1.5-2.5 × 0.5-1.2 mm, margins scarious; stamens 3[-4], alternate with carpels; pedicel erect-ascending at anthesis, erect to deflexed in fruit, 3-20 mm.Capsules ovoid-ellipsoid, 2.5-3.3 × 1.4-2.2 mm. Seeds 15-35, dark or reddish brown, with blackish, parallel, curved ridges on sides, or smooth, 0.5-0.6 × 0.4-0.5 mm. 2n = 64.