FLORA OF VIETNAM Fabaceae Ormosia integrifolia Aver., sp. nov.** Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1100-1290 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen coniferous humid forest with Pseudotsuga sinensis on rocky mountain tops and ridges. Treelet or shrub 2-3 m tall on steep slopes. Flowers white. Not common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 025 (holotype – HN, LE01058078 – photo, isotype – HN). From close O. simplicifolia Merr. & L. Chen (having also simple leaves) this plan differs in distinctly petiolate, narrowly ovate, acute leaves with distinct 3 veins (vs. leaves shortly petiolate, oblong lanceolate, acuminate, with one main vein and pinnate venation) and short inflorecence less than 3 cm long (vs. inflorescence 6–10 cm long).

All photos © L. Averyanov & K.S. Nguyen