FLORA OF VIETNAM
Polypodiaceae s.l. Dryopteridaceae
Dryopteris sparsa (D.Don) Kuntze

Ha Giang prov., Quan Ba distr., Cao Ma Po commune, Chin Chu Lin village, around point 23°04ʹ47.2ʺN 104°48ʹ55.6ʺE, steep slopes and flattened top of mountain composed with sandstone at elevation 1800–1950 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern on shady mossy steep slope. Common. 21 October 2018, L. Averyanov, Nguyen Sinh Khang, T. Maisak, Truong Duc Thieu, VR 1145 (HN, LE01037391).