Perennials with erect stems 50-150(-200) mm high, sometimes branched from base. Leaves in 2.3(4) pairs and usually only lower ones with petioles up to 30 mm long; lamina obovate or elliptic, (10-)20-60(-80) x (5-)15-50(-60) mm, obtuse rarely bluntly acute, cuneate or cordate, crenate or doubly crenate, rarely serrate to entire, glabrous, scarcely fleshy, green, rarely purple underneath. Inflorescence usually terminal, an umbellate to flat-topped thyrse, with peduncle 30-100(-130) mm long, with 5-7(-12)-merous flowers. Calyx: lobes triangular, 1-2(-3) mm long, bluntly acute, glabrous, slightly fleshy, green often tinged red. Corolla star-shaped, scarcely fused at base, white often tinged pink; lobes lanceolate, 3-6(-8) mm long, usually sharply acute, spreading. Stamens with brown anthers. Squamae transversely oblong to square, rarely oblong, 0.2-0.6 x 0.3-0.6 mm, usually truncate or rarely rounded or emarginate, more or less constricted downwards, fleshy, yellow to white.
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Tuberous geophyte, 5-20 cm. Leaves opposite, in 2 or 3(4) pairs, the lower subpetiolate, thin-textured, obovate to cuneate-suborbicular, crenate. Flowers in a pedunculate, subumbellate thyrse, star-shaped, white to pinkish, petals 3-8 mm long, squamae at least as broad as long.
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