Cyciotella and Stephannodiscus

Often these cannot easily be told apart, but only by detailed study.They are cylindrical diatoms, 5-50 pm diameter, occurring singly or pai but not in long chains. Often they have a crown of very fine long radiating bristles from each end, not shown here because it is difficult to see.Common , usually planktonic.in pools. lakes. and especially siow rivers. whose water are often brown with them in spring and early summer. 70 a. b. valve and girdle views; 70c, cleaned valve of a Cyclotella.

RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41

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Cocconies

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

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

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

VOREGON MICRO ALGAE

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