Ha Noi prov. My Duc district, Huong Son commune, Chua Huong (Perfume Pagoda), around point: 220 25′ 08.6″ N, 1060 04′ 24.2″ E, 878 m a.s.l Woody vine to 4 m long , flower yellow, in top of limestone mountain, accompanied with Cycas hoabinhensis
CPC 4850 Date: 30 March 2013 Coll.: Nguyen Sinh Khang