ຫວາຍຫຼືມ / Evans's Rattane

Description. Stems clustered, climbing, to 7 m long and 1.3 cm diameter. Leaf sheaths green with white hairs, with sparsely to densely arranged brown, black-tipped, flattened, horizontally spreading spines to 1 cm long, sometimes with many short spines interspersed; knees present; ocreas present, densely bristly; flagella present; petioles to 20 cm long; rachis to 0.5 m long with 3-6, lanceolate leaflets per side, these arranged in distant groups or solitary, the apical pair free or only briefly joined at their bases; cirri absent. Inflorescences to 3 m long, flagellate; bracts tubular; fruits not seen. Distribution and habitat. Central Laos in lowland evergreen forest at 520-530 m elevation. Known from a few localities; one locality is now flooded by a hydro-electric dam. Flowering and fruiting. Flowers March. (M. Peters & A. Henderson, 2014).