FLORA OF VIETNAM
Melastomataceae
Sonerila plagiocardia Diels

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. Lithophytic herb on vertical shady mossy bluff along rocky stream. Leaves pale green, dull purple below. Flowers pale pink-purple, anther yellow. Not common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1523 (HN, LE01067115, LE01070237).