Pinnularia divergens var. elliptica (Grun.) Cl.




Collection 1788

Other images

More information

Return to Top Page Return to Genera List Return to Species List

Authority information

Pinnularia divergens var. elliptica (Grun.) Cl., K. Svenska Vet.-Akad. Handl., Ny Foljd, 27(3):79. 1895(Patrick and Reimer 1966).

Other images

This image was taken utilizing DIC for the specimen above.

More information

Valve linear-elliptical, narrowing toward rounded ends. Axial area one-fifth the breadth of the valve, widening into the rhomboid central area on each side of which is the thickening characteristic of Pinnularia divergens. Raphe filamentous; terminal fissures "bayonet" shaped. Striae radiate at the center of the valve, convergent troward the ends (Patrick and Reimer 1966).

  • Type Locality
    Franz Josefs-Land (Patrick and Reimer 1966)
  • Synonyms
    Navicula divergens var. elliptica Grun., Denkschr. Akad. Wiss. Wien, Math.-Naturw. Cl., 48:98, pl. 1, fig. 19. 1884 (Patrick and Reimer 1966).

  • Ecology
    This taxon seems to prefer cool water. It has been found in a wide range of pH enviroments and habitats(Patrick and Reimer 1966; Beaver 1981).

    Size ranges and morphology

  • Length is 50 to 100 micrometers (Patrick and Reimer 1966).
  • Width is 15 to 26 micrometers (Patrick and Reimer 1966).
  • Striae are 7 to 11 in 10 micrometers (Patrick and Reimer 1966).