Large populations of G. uncatenum will
cause the water to turn a coffee color. Large numbers were found in the Magothy
River on Sept. 7, 1986 (19,421 per ml).
30-62um long, 20-43um wide, girdle displaced 1/3 body length.
References
Campbell, P. H. 1973. The Phytoplankton of Gales Creek with emphasis on the Taxonomy
and Ecology of Estuarine Phytoflagellates. University Microfilms, Xerox University
Microfilms, Ann Arbor Michigan, USA page 152.
Hasle, G. R. & Syvertsen, E. E. 1996
Dinoflagellates. In: Tomas, C. R.(ed.) Identifying Marine Phytoplankton. Academic Press,
Inc. San Diego, Calif. page 453.