Menispermaceae

Stephania sp.

Quang Ninh Province, Van Don District, Van Yen Commune, Bai Tu Long National Park, Cai Lim protection sector|, Yang Nuoc Xanh Island, around point 21º05’03’’N 107º32’42’’E. Open broad-leaved evergreen forest and scrub on steep slopes and cliffs composed by solid highly eroded limestone at elevation about 70 m a.s.l. Herbaceous vine to 2-3 m long. Flowers dull yellowish to dirty purple. Not rare.

18 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4388 (NHC181).