FLORA OF VIETNAM
Begoniaceae
Begonia pseudodryadis C.Y. Wu var. bitepala Aver., var. nov.

Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Dau Cau 1 village, around point 23°05ʹ26.3ʺN 105°01ʹ03.0ʺE, 1100-1150 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Lithophytic herb on vertical shady cliff. Petioles dull purple, leaves olive-brownish with palmate oriented white spots above, below pink. Locally common. 14 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 095 (holotype – LE01054061, isotype – HN). New variety differs from the type in staminate flowers having obligatory 2 tepals (vs. staminate flowers always with 4 tepals).