Glaucocystis Itsigsohn
	From Greek glaukos, "bluish-green or gray" + kystis, "bladder"
	Glaucocystis has ovoid cells that each have two deeply lobed blue-green plastids called cyanelles. Colonies form when the ovoid daughter cells stay within the parent cell walls after division.     Note the concentric mucilage sheaths that reveal the pattern of cellular division.