Tupistra orlovii Aver., N. Tanaka & K. S. Nguyen, sp.nov.
Bolikhamsai prov., Thaphabat distr., Nam Bon village, Phou Khao Khouay national park, Tad Xai Waterfall, around point 18°27'25.9''N 103°08'17.5''E. Degraded primary and secondary evergreen dry forest along river on eroded sandstone at elev. About 340 m a.s.l. Lithophytic and occasionally terrestrial large herb on shady mossy boulders and river cliffs. Leaves uniform green, fruits glossy green. Rare, but locally abundant.
L. Orlov et al., sine n., 10 November 2016 and L.Averyanov et al., LA-VN 2191 11 April 2017.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122831 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122831