(Trentep. ex Roth) Grunow (1880: 1587)
Amphipleura rutilans (Trentep. ex Roth) Cleve (1894: 126)See VanLandingham (1967: 507) for further references and synonymy.
Conferva rutilans Trentep. ex Roth (1806: 179)
Cardinal et al. (1984: 371, figs 9, 10, 13, 14), Lobban (1986: 85, fig. 11), Round et al. (1990: 518, figs f, g)
Cells solitary or forming mucilage tubes. Valves linear to lanceolate, with bluntly rounded poles; apical axis 13–60 µm; transapical axis c. 9–12 µm. Raphe slits short, with central raphe endings terminating well short of valve centre; all raphe endings deflected in the same direction. Transapical striae fine, straight, uniseriate, c. 30 in 10 µm, consisting of simple poroids. Copulae bearing 2 rows of round to oval poroids.
Ellis Fjord, near Davis Station, East Antarctica; high intertidal, Livingston I., Antarctic Peninsula (Lobban, 1986).
Specimens seen in the present study are longer (50–60 µm) than those of previous reports (e.g. 13–43 µm, Cardinal et al., 1984). Amphipleura rutilans (Trentep. ex Roth) Cleve var. antarctica (Harv.) Grunow, with finer valve striation, was reported by Manguin (1960: 309, fig. 164) from the Antarctic Peninsula. “Berkeleya/Amphipleura ” was recorded by McConville & Wetherbee (1983) from near Casey Station, East Antarctica.