FLORA OF VIETNAM
Polypodiaceae s.l. (Athyriaceae)
Diplazium crassiusculum Ching

Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988°N 105.08646°E. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Terrestrial fern on steep shady slope. Common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1527 (HN, LE01067120, LE01070233).