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•Plankton •Filamentous •Stonewort Plankton algae • Microscopic • Floating • Colors the water when present in large numbers (green, brown, yellow or red) • Not flowering • Population explosion= ALGAL BLOOM • Cells are arranged in long strands • Fur like covering on rocks in streams • Floating mat = POND SCUM • Found on the bottom of ponds or lakes with limestone soil • Identified by a central stem with whorls of branches, no roots, no flowers • Can grow 2 or 3 feet • Appearance and odor= MUSKGRASS •Emerging •Submerged •Floating • Grow in shallow water • Most of the stem, leaves and flowers grow above the water’s surface • Grow in deep water • Usually rooted in a muddy bottom • Only the flower rises above the water’s surface • These plants grow entirely below the water’s surface (except the flower) • Have floating leaves and flowers sometimes only slightly on the surface
