This imge was taken using DIc of the pseudoraphe valve.
This taxon has a broadly elliptical arched valve. The raphe valve has a narrow linear axial area that ends in a small semicircular clear space. there is a small central area that is circular to irregularily shaped. It is filiform with close proximal ends. It has straight distal ends and curved radiate striae that is finely puntate. The straie do not extend to the margin but are interrupted by a continuous clear marginal area. The pseudoraphe valve is very narrow and linear. It has no central area. The striae are radiate and curved(Patrick and Reimer 1966).
Synonyms
Cocconeis communis Heib., Consp. Crit. Diat. Danicarum, p. 98. 1863(Patrick and Reimer 1966).
Ecology
This taxon is widespread. It si epiphytic on aquatic plants and other objects but it is not found in large numbers. This taxon is an alkaliphil and salt indifferent(Patrick and Reimer 1966).
Length is 11 to 30 micrometers (Patrick and Reimer 1966).
Width is 6 to 20 micrometers (Patrick and Reimer 1966).
Striae in the raphe valve are 20 in 10 micrometers along the axial area (Patrick and Reimer 1966).
Striae in the raphe valve are 16 to 17 in 10 micrometers near the margin (Patrick and Reimer 1966).
Striae in the pseudoraphe valve are 18 in 10 micrometers along the axial area (Patrick and Reimer 1966).
Striae in the pseudoraphe valve are 15 to 16 in 10 micrometers near the margin (Patrick and Reimer 1966).
This image was taken using DIC.
