FLORA OF VIETNAM Polypodiaceae s.l. (Dipteridaceae) Dipteris conjugata
N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Kim Municipality, Rao Bun stream around point 18°23′39′'N, 105°15′12′'E. Primary coniferous closed forest with Fokienia hodginsii and Dacrydium elatum along ridge rib and on slopes near the ridge tops at elevation 1100-1200 m a.s.l. (Kho Mu mt.).
Terrestrial fern with fronds up to 1.5 m tall on very steep and vertical mossy shady slope and on ridge tops. Very common. Occasional co-dominant of herb forest stratum.