Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, environs of Mo O O O village, around point 17°38’00.4”N 105°55’57.9”E, Kalap Mountain. Primary mixed and coniferous forest (with Dacrydium elatum and Dacrycarpus imbricatus) on very steep rocky slope and on rocky top of remnant mountain composed with highly eroded solid crystalline limestone at elevation 750-800 m a.s.l. Tree 7-10 m tall, 5-6 cm DBH on steep shady rocky slope near to mountain top. Syconia green with purple tint. Common.