Herbs, perennial, 20-25 cm tall. Roots thick, woody. Stems thick, internodes to 4 cm. Stipules distinct, triangular, margin membranous. Leaves with 2 leaflets; petiole 0.8-1.8 cm, connected; leaflet blades obovate to nearly rotund, 2-4 × 1.5-3 cm, slightly fleshy, flat, apex rounded. Flowers axillary, paired. Pedicel ca. 5 mm. Sepals obovate. Petals slightly angular. Stamens longer than petals; appendages on middle part of filaments. Capsule oblanceolate to oblong, 2.5-4 × 1-1.5 cm, slightly ridged, dehiscent. Seeds 4 or 5 per carpel, ovoid, bony, margin irregular. Fl. May-Jun, fr. Jul.
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