N. Vietnam, Thai Nguyen prov., Vo Nhai distr., Than Sa municipality, vicinities of Kim Son village (N 21°48′ E 105°54′), 23.3 km to 18° of Thai Nguyen city. Primary dry broadleaved evergreen forest on very steep rocky slopes of remnant karst limestone ridge at elev. about 300 m a.s.l. Adpressed lithophytic forb in crevices of shady cliffs. Leaves very deep green with silver-green palmate irregular spot above, gray-greenish with violet tint and purple violet venation below. Petiole dirty reddish. Flowers pink, fruits green with pink wings. Very common, especially at elev. 200-300 m.