N. Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi Municipality, village Phia Khao, around point 22º17'31''N, 105º31'51''E, Cau Muc mountain at elevation 800-900 m a.s.l. Primary broad-leaved evergreen closed forest on very steep slopes and cliffs near tops of rocky ridge composed with solid marble-like
stratified limestone. Terrestrial achlorophyllous dull purple-brown saprophyte. Flowers deep
Coordinates (geographic position):22° 17′ 31″ N, 105° 31′ 51″ E ±1000 mRecord creation: 2019-01-16, Leonid Averyanov, ILCE-7RCitation: Specimen LE 01041989 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01041989