Perennial herbs or subshrubs, 5-10 cm tall. Stems and branches terete; young branchlets pubescent, with dense rounded raised leaf scars and lenticels. Petiole ca. 6 mm, winged; leaf blade green, elliptic-obovate or spatulate, 1-1.5 × 0.5-0.8 cm, thickly papery (or slightly fleshy), abaxially slightly scabrous, glabrous, adaxially densely white hispidulous near margin, midvein raised abaxially, slightly impressed adaxially, lateral veins 2 or 3 pairs, only evident abaxially, base decurrent, cuneate, margin entire, apex obtuse, mucronate. Racemes terminal, few flowered. Flowers large, ca. 1.8 cm. Pedicel ca. 6 mm, pubescent. Sepals 5, unequal, caducous at anthesis; outer sepals 3, glabrous, upper one cucullate, ca. 6 mm, lateral ones oblong, ca. 4 × 2 mm, base oblique, apex obtuse; inner sepals 2, petaloid, elliptic-oblong, ca. 14 × 6 mm, 3-5-veined, base clawed, apex rounded. Petals 3, connate in lower 2/3, white to greenish white; lateral petals oblong, ca. 1.5 cm; keel ca. as long as or longer than lateral petals, apex with 4 fingerlike appendages. Stamens 8; filaments ca. 1.4 cm, lower 3/4 united, forming an open staminal sheath adnate with petals; anthers ovoid. Ovary broadly oblong, ca. 1.5 mm in diam., winged, with short stalk; style ca. 1.3 cm, apex 2-lobed, lobes deltoid; stigma in lobes. Fruit not seen. Fl. Jul-Sep, fr. unknown.
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