A = Living and dead cells at different focal planes; B = Cell in Lugol. (DIC)
Life-form: Solitary
Size: Diameter=47-53 µm (excl. lists)
Resting spore:
Note:
Distinctive features: A few conspicous alae
Similar species:
Distribution: Atlantic
Literature:
Parke, M., Boalch, G. T., Jowett, R. & Harbour, D. S. 1978. The
genus Pterosperma (Prasinophyceae): species with a single
equatorial ala. J. Mar. Biol. Ass. U.K., 58: 239-276.
Throndsen, J. 1993. The planktonic marine flagellates. In: (Tomas eds.) Marine Phytoplankton: a guide to naked flagellates and coccolithophorids. Academic Press, San Diego, pp. 7-145.