Habitat and morphology of Hymenophyllum chamaecypericola, from Hsu 11888 (TAIF) A, B wild population growing on moss-covered basal trunk of a giant Chamaecyparis obtusa var. formosana C rhizome and young frond, showing the wingless and scarcely hairy stipe D–G fronds, adaxial views (D, E) and abaxial views (F–G) H, I laminae, adaxial view (F) and abaxial view (G), showing the minute yellow-brown clavate hairs on rachis and veins. J. Sori. Scale bars: 2 cm (B); 5 mm (C, J); 1 cm (D–G); 2 mm (H, I).