N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Lam Xa Municipality, Lang Trang village, around point 20°20′02′'N, 105°12′39′'E. Remnants of primary broad-leaved evergreen seasonal forest along rocky tops of remnant mountains composed with solid crystalline marble-like highly eroded limestone at elev. 500-550 m a.s.l. Lithophytic rosette herb on shady cliff. Flowers white, anthers and stigma yellowish. Leaves deep green with irregular white spots above, light uniform green below, petioles pink-brown. Very common.