FLORA OF VIETNAM Fam. Burmanniaceae Burmannia unguiculata Aver., sp.nov. Northern Vietnam, Tuyen Quang Prov., Na Hang Distr., Thuong Lam Municipality, Na Lau village, in the vicinity of point 22ø28'23''N, 105ø19'47''E. Primary evergreen seasonal broad-leaved forest on highly eroded remnant ridge composed with soft stratified limestone consolidated with numerous quartzite dikes at elev. 450-500 m a.s.l. Mycotrophic achlorophyllous blue herb on shady rocky slope. Flowers light blue to white, stem blue to blue-violet. Occasional. No HAL 1709 (Photo) 31 May 2002 Collectors: L.Averyanov, P.K.Loc.
Coordinates (geographic position):22° 28′ 23″ N, 105° 19′ 47″ E ±1000 mRecord creation: 2019-06-28, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01055869 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055869