Covallariaceae

Tuyen Quang prov., Lam Binh distr., Thuong Lam commune, Na Tong village, Nhieu Lai- Bung Coc (Ao Ech). Around point 22°30'19.4"N, 105°18'18.3"E, 480–540 m. a.s.l. Secondary evergreen humid forest on rocky limestone mixed sandstone on with brown-red soil hills at elevation 480–540 m. a.s.l. Herb 50–70 cm in height, common. 11 Oct. 2017 CPC 8447 AL 396c N.T.Hiep, N.S.Khang, C.Q.Ngan, N.Q.Hieu, Chau Van Tuy, Chau Van Xa.

Herbarium prepared in 16.03 2020. Flowers outside white with purplw speckles at lobe apex, tube inside dark purple-brown to almost black, anther pale yellow, pistil dark perple-brown to almost black, stigma white. L. Averyanov, AL 396c.1.