FLORA OF VIETNAM Polypodiaceae s.l. Adianthum capillus-veneris
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. Lithophytic fern on shady limestone cliffs along stream near the water at 20-40 m a.s.l. Common.