Skip to main content

Cyciotella and Stephannodiscus

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 

Comments

Post a Comment

Popular posts from this blog

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  
Post a Comment
Read more

Tribonema

Tribonema Filamentous and unbranched 5-20 micron diameter with several parietal chloroplasts and H- pieces resembling Microspora (39) but differing in the longer and narrower cells and much paler and more transparent appearance. Having no starch. Commen especially in grassy pools. 61 a part of a filament 61b H- piece ( fit together to form the walls) RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41  
Post a Comment
Read more

Gomphosphaeria (Coelosphaerium )

Gomphosphaeria ( Coelosphaerium ) Gomphosphaeria ( Coelosphaerium ). Small cells up to 5um in diameter, united into a hollaw, roughly spherical, floating colony, sometimes blackish in appearanco and often sur-rounded by mucilage. Colonies reach about 100um across.Conspicuous in the plankton of lakes. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41
Post a Comment
Read more