Biermannia averyanovii (Vuong, Kumar, V.H. Bui, V.S.Dang in Pham et al.) Averyanov, Leonid V., Nguyen, Van Canh, Truong, Ba Vuong, Nguyen, Khang Sinh, Nguyen, Cuong Huu, Maisak, Tatiana V., Doan, Nga Thi, Nguyen, Tuan Hoang, Pham, Van The, Dat, Pham Thi Thanh, Thai, Tran Huy, Nguyen, Van Khuong & Trinh, Ngoc Bon, 2023

Averyanov, Leonid V., Nguyen, Van Canh, Truong, Ba Vuong, Nguyen, Khang Sinh, Nguyen, Cuong Huu, Maisak, Tatiana V., Doan, Nga Thi, Nguyen, Tuan Hoang, Pham, Van The, Dat, Pham Thi Thanh, Thai, Tran Huy, Nguyen, Van Khuong & Trinh, Ngoc Bon, 2023, New orchids in the flora of Vietnam VI (Orchidaceae, tribes Arethuseae, Cymbidieae, Diurideae, Epidendreae, Vandeae, and Vanilleae), Phytotaxa 597 (2), pp. 87-110 : 101

Biermannia averyanovii (Vuong, Kumar, V.H. Bui, V.S.Dang in Pham et al.) Averyanov, comb. nov.

≡ Chamaeanthus averyanovii Vuong, Kumar, V.H. Bui & V.S.Dang in Pham et al. (2021: 132, fig. 1).

Type:— VIETNAM. Son La Province: Thuan Chau District, 18 June 2021, Truong Ba Vuong , Bui Van Huong, BV 1194 ( VNM 00069908 ) .

Notes:—We can not see any fundamental differences between Biermannia King & Pantling (1897: 591) and Chamaeanthus Schlechter ex J.J. Smith (1905: 552) except for insufficient variation on the length of the column foot. Following Seidenfaden & Wood (1992), we consider these genera congeneric and use here earlier valid name. Data on ecology, phenology, distribution, and conservation status for this species were reported earlier ( Pham et al. 2021).