Scenedesmus acuminatus
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A green algae of the family Scenedesmaceae in the order Chlorococcales.
Scenedesmus is an example of a colnial green algae. It is more often found floating in the creek water and not attached to rocks on the bottom. Unlike most of the colonial green algae that form long filaments, scenedesmus forms small chains of four cells. The ends of the colony possess cell wall extensions that have a spike like appearance. Small vacuoles, filled with oil, can be seen at either end of each cell. The oil enables them to float in the water, maximizing their exposure to sunlight.
