Phytologi a 68: 268. 1990.
Plants annual, taprooted or roots fibrous. Stems 2 or more from each rosette, spreading to erect, leafy, 0.5–8 cm. Leaves basal and cauline; basal in single, prostrate rosette; blade spatulate, 0.5–1.5 cm. Inflorescences paniculate or racemose, often secund, ± dense. Flowers pedicellate; sepals ovate, 2–4 mm, fleshy, becoming membranaceous; petals persistent in fruit, 4, white, 3 mm; stamens 1(–3), anther yellow; style absent; stigmas 2; pedicel 1–3 mm. Capsules ovoid, 3–5 mm; valves 2. Seeds 5–9, black, orbicular, 0.3–0.7 mm, shiny. 2n = 44.
Phenology: Flowering Jun–Jul.
Habitat: Dry, less often moist, sandy or gravelly soils
Elevation: 1900-3500 m