flat colonies of 2,4or8 elengated cells arranged in a row as shown some species having spines at the corners of the colonies. Cells 5-30 mic long. Common everywhere .two species are illustrated.
Cocconeis Extremely common flat oval diatoms.10-30 micron long.clinging to plants stones and other substrada some times in almost continuous layer cleaned frustule 3 cells on an Oedogonium filament. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41
Staurastrum Each half cell is triangular in end view,with three corners spines or arms.Cells vary up to 130 micron in length and are common in the plankton of lakes. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41
Chodatella Like Oocystis in size and shape but with several selender bristles, usually at each end of the cell.Ponds lakes and slow rivers. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41
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