Hannaea recta (Skvortzow & Meyer) Q. Liu, Glushchenko, Kulikovskiy & Kociolek, comb. nov., stat. nov.

Ceratoneis amphioxys var. recta Skvortzow & Meyer, Proceedings of the Sungaree River Biological Station 1 (5): 8; pl. 1, fig. 11 (1928). — Ceratoneis arcus f. recta (Skvortzow & Meyer) Skvortzow, Proceedings of the Harbin Society of Natural History and Ethnography 2: 19; pl. 2, fig. 40 (1946). — Ceratoneis arcus f. recta (Skvortzow & Meyer) Proschkina-Lavrenko in Zabelina, Opredelitel presnovodnych vodoroslei SSSR. Gosudarstvennoe Izdatelystvo Sovetskaya Nauka 4: 138; fig. 76, 3 (1951). — Ceratoneis recta (Skvortzow & Meyer) Iwahashi, Journal of Japanese Botany 12: 391 (1936). — Ceratoneis arcus f. recta (Skvortzow) Poretsky in Poretsky & Sheshukova, Leningrad State University: 145-146; fig. 3 (1953). — Ceratoneis arcus subsp. recta (Skvortzow) Skabichevskii, Trudy Limnologicheskogo Instituta 2: 52; fig. a, b (1963).

LOCALITY. — Lake Baikal.