Family: Rhizosoleniaceae De Toni
Genus: Rhizosolenia (Ehrenberg) Brightwell
Scientific name: Rhizosolenia hyalina Ostenfeld
Rhizosolenia pellucida Cleve
Hasle and Syvertsen, 1997.
Process slightly bent near the end of the otaria. Otaria narrow, extending along process for ca 4-6 µm. Diameter 9-60 µm,length of process up to 40 µm, band areolae 31-36 in 10 µm (Hasle and Syvertsen, 1997).
Cells length 180-220 µm; diameter 40-45 µm.
Sites of occurrence in RSA:
In Winter 2006 Cruise, this species was frequently observed at various sites (refer sites map), although never in large numbers; maximum abundance (4.4*10^2 cells/l) was associated with the northwestern part of the inner RSA (St. 11).