FLORA OF VIETNAM Orchidaceae Paphiopedilum helenae Aver.
N. Vietnam, prov. Cao Bang, distr. Thach An, municipality Duc Xuan, (N 22°21′ E 106°27′), about 39 km to SSE from Cao Bang town. Primary broadleaved semideciduous forest on steep slopes near tops of remnant limestone ridge at 500 m alt. Epilite herb on vertical shadow cliffs of N exposition. Not common. CBL 830 02 Dec. 1998 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98) Collectors: Averyanov L., P.K. Loc.
Coordinates (geographic position):22° 21′ N, 106° 27′ E ±1000 mRecord creation: 2020-11-02, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01074806 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01074806