Polypodiaceae s.l.

Lepisorus sp.?.

Ha Giang prov., Quan Ba distr., Cao Ma Po commune, Chin Chu Lin village, around point 23º05ʹ13.5ʺN 104º48ʹ30.2ʺE, rocky outcrops on steep rocky slopes composed with eroded karstic limestone at elevation 1750–1950 m a.s.l. Highly degraded remnants of primary evergreen broad-leaved very humid forest and evergreen secondary shrubs. Creeping lithophytic fern on mossy open rocks. Not rare.20 October 2018, L. Averyanov, Nguyen Sinh Khang, T. Maisak, Truong Duc Thieu, VR 1112.