FLORA OF VIETNAM Rubiaceae Ophiorrhiza sp. Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23º08ʹ55.1ʺN 104º59ʹ45.7ʺE, 1000-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary and partially degraded evergreen broad-leaved humid forest on rocky mountain slopes. Terrestrial and lithophytic herb in shady place. Common. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 073.
Record creation: 2019-06-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01058104 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01058104