Sellaphora

Mereschkowsky 1902      Category: Symmetrical biraphid
TYPE SPECIES: Sellaphora pupula (Kützing) Mereschkowsky

Scoliopleura

 

Simonsenia

Image Credit: Megan Otu, Sarah Spaulding

CLASS: Bacillariophyceae
  ORDER: Naviculales
    FAMILY: Sellaphoraceae

  1. Valve linear, lanceolate or elliptical
  2. Polar bars at apices in some taxa
  3. Striae uniseriate
  4. Conopeum present in some taxa

The valve is linear, lanceolate, or elliptical with bluntly rounded poles. Polar bars, or transapical thickenings, are present in some taxa. The axial area is distinct, and may be expanded along the apical axis to form a conopeum. The external proximal raphe ends are dilated, while the distal raphe ends are deflected.

Sellaphora is widespread in alkaline to brackish waters of neutral pH. It contains the former Navicula pupula Kützing group.

Cite This Page:
Spaulding, S., and Edlund, M. (2008). Sellaphora. In Diatoms of the United States. Retrieved September 19, 2014, from http://westerndiatoms.colorado.edu/taxa/genus/Sellaphora

Contributor: Sarah Spaulding | Mark Edlund - December 2008