Herbs perennial. Stems erect, sometimes diffuse, 10--30 cm tall, basally branched. Leaves sessile, ovate-lanceolate to lanceolate, 1--2 cm × 1.5--4 mm, both surfaces glabrous, base cuneate, apex acuminate, axillary sterile branches from proximal leaves sometimes present. Flowers 1--3, sometimes 6--10, in cymes; bracts herbaceous, margin membranous. Pedicel ca. 1 cm. Sepals 5, ovate-lanceolate, 5--8 × 1--2 mm, margin membranous, apex acuminate. Petals 5, 1/2--2/3 as long as sepals, 2-cleft nearly to base; lobes linear. Stamens 10; filaments short. Ovary ovoid; styles 3. Capsule ovoid-orbicular, 5--7 mm. Seeds orbicular-ovoid, rugulose. Fl. Jun--Aug, fr. Aug--Sep.
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