N.Vietnam, prov. Lao Cai, distr. Than Uyen, municipality Ho Mit (N. 22°06' E 103°52'). Elevation to Mang Han San quartzite peak by SW. slope from Ban Thao village (SSW macroslope of Hoang Lien Son ridge). Primary wet evergreen broadleaved forest on very steep rocky slope at. 1900-2200 m elev. Terrestrial and lithophyte forb in shady wet stream. canyon among mossy rocks. Flowers blue-violet. Common. No NTH 2869 21-22 May 1999. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 6300-98). Collectors: N.T.Hiep, P.H.Hoang, Averyanov L.
Coordinates (geographic position):22° 6′ 0″ N, 103° 52′ 0″ E ±1000 mRecord creation: 2019-02-22, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01049931 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01049931