Herbs glabrous throughout, or fruit valves and/or sepals sparsely to densely pubescent with simple, flattened trichomes to 0.5 mm. Stems erect, somewhat fleshy, usually simple from taproot, 1.5-10 cm tall, often forming a flat mat 1-12 cm in diam. Leaves spatulate, linear-spatulate, oblong, or linear, (0.3-)0.6-2(-3) cm × (1-)2-3(-5) mm, fleshy, base attenuate, margin sinuate, dentate, or repand, sometimes entire, apex obtuse. Corymbs few to many flowered, lowermost or most flowers bracteate, sometimes flowers solitary from center of rosette. Fruiting pedicels 3-10 mm. Sepals erect or ascending, broadly ovate, (1-)1.5-2.5 × 1-1.5 mm, glabrous or densely pubescent, margin broadly membranous, apex denticulate or entire. Petals white or pink, drying purplish, spatulate to spatulate-linear, 1.8-2.5(-3.2) × 0.5-1(-1.5) mm, apex obtuse or subemarginate; claw to 2 mm. Filaments white, 1.1-1.6 mm; anthers ovate, (0.2-)0.3-0.5 mm, the apicula triangular, 0.05-0.1 mm, apex acute. Ovules (2-)4-8(-12) per ovary. Fruit valves oblong or ovate, glabrous or densely pubescent, 1-2.5 mm, notch 1-2 mm wide, apical cristae 3-14; replum 1.2-2.5 mm wide at base; style 0.2-0.5 mm. Seeds brown to blackish, broadly oblong, 0.7-1.1(-1.5) × 0.5-0.6 mm. Fl. Jun-Aug, fr. Jul-Sep.
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