Merismopedia Meyen
	From Greek merismos, "division" + kystis, "plane"
	Merismopedia has cells arranged in perpendicular rows one cell thick to form rectangular colonies. The colonies may be flat or slightly wavy and are held together by colorless, indistinct mucilage. Except for a few species, the colonies are usually microcopic, and may have subcolonies.   The cells are usually blue-green or occasionally reddish in color, 1-7 µm in diameter, and are spherical or oval-shaped before dividing and hemispherical after dividing. Some planktonic species have gas vesicles for bouyancy.
Merismopedia cultures may not exhibit the characteristic ordered colonies. In time the cells should form the large, flat colonial sheets as seen above.