Tupistra theana Aver. et N.Tanaka, sp.nov. Epitype
Quang Binh Prov., Minh Hoa Distr., Hoa Tien municipality, La Van village, around point 17°51’45”N 105°49’45”E. Highly degraded primary and secondary evergreen broad-leaved forest on very steep rocky slopes of remnant limestone hills composed with highly eroded marble-like crystalline limestone at elev. 200-450 m a.s.l. Lithophytic herb on shelves and in crevices of tall shady vertical cliff near to top of mountain. Not common.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122691 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122691