N.Vietnam, Bac Kan Prov., Ba Be Distr., Nam Mau Municipality Nam Dai village, Ba Be National Park around point 22025′ 013′'N 1050 35′ 771′'E.
Secondary closed evergreen broad-leaved forest on top of remnant mountains composed with crystalline highly eroded marble-like limestone at elevation 531 m a.s.l. Herb 50- 100 cm hight. Young fruit green, red- violet in mature. On soil, in shady and wet along the strem HLF 560 21 Dec. 2002.
Coll. Nguyen Tien Hiep, Jacinto Regalado, Duong Van Xy, Bang Tien Sy Grant from Henry Luce Foundation.