Lam Dong province, Lac Duong district, Da Chais, Bi Doup-Nui Ba N.P., route to plant diversity area for environment education, near Salmon pound No.3, Primary broad-leaved mixed with coniferous forest on sandstone mountain, at shaded and wet places along small stream bank, around point 12.17269o N, 108.70132o E, elevation of 1460-1500 m a.s.l. Terrestrial herb about 35-65 tall, rare. 15 November 2019, Nguyen Sinh Khang, Mac Mahan Scott Forrest, Zale Peter Jeffrey, Paige Gregory, Pham Thi Nguyen & Nguyen Van Cuong, LD 52