FLORA OF VIETNAM Fabaceae (Mimosoideae) Archidendron laoticum (Gagnep.) I.C. Nielsen? Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. 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. Tree to 25 (30) m tall. Fruits 1-4 seeded, pod dull brown, to 20 cm long and 5 cm in diameter, seeds brown mottled with light brownish. Common. One of the forest co-dominant. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1513. Det.: Sawai Mattapha 29.11.2019