Bulbophyllum sp. nov.? (Bulbophyllum coweniorum J.J.Verm. & P.O'Byrne?)
Laos, Vientiane prov., Vang Vieng district, close vicinities of Vang Vien town, secondary degraded evergreen forest on steep slopes of small rocky stream (dry during rainless season) between remnant mountains composed with karstic highly eroded marble-like limestone at elevation at 300-400 m a.s.l., Creeping epiphyte on tall tree. Not rare, 12 December 2015, L. Averyanov, T. Maisak, M. Nuraliev, N. Vislobokov, AL 178(3 plants).
Herbarium specimen prepared in 17 April 2019, flowers odorless, dull yellow with small purple marks, L. Averyanov AL 178 / 1.