(Photo on left taken by Dr. Charles Gallegos at 100x)
Heterocapsa triquerta syn. Peridinium triquetrum, Protoperidinium triquetrum, Glenodinium triquetrum, Protoperidinium heterocapsa
Size 16um wide, 24um long, total volume 3216.97. Temp. range 0.54 to 28.0, salinity range 0.5 to 18.25. Collected Jan. to April and Oct. to Dec. from all Rhode River stations and the Chesapeake Bay. Common winter species which tends to bloom in late December.