FLORA OF VIETNAM Begoniaceae Begonia pseudodryadis C.Y. Wu var. bitepala Aver., var. nov. Ha Giang Prov., Quan Ba Distr., Can Ty Commune, Sin Suoi Ho Village, around point 23.09566ºN 105.02142ºE. Very steep mountain slopes composed of solid highly eroded karstic limestone at elevation 800–1000 m a.s.l. Remnants of primary evergreen broad-leaved and coniferous (with Calocedrus rupestris and Xanthocyparis vietnamensis) humid forest. Rosulate lithophytic herb on vertical shady mossy cliff. Leaves dark olive-green with irregular whitish spots above, pale purple with light greenish spots below. Flowers light pink-purple, anther yellow. Locally common. 11 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1571.