Van de Vijver, Gligora, Hinz, Kralj and Cocquyt 2009      Category: Symmetrical biraphid
TYPE SPECIES: Envekadea hedinii (Hustedt) Van de Vijver et al.




Smallest to largest - 3 taxa sorted by maximum length

Image Credit: Sylvia Lee, Bart Van de Vijver

CLASS: Bacillariophyceae
  ORDER: Naviculales

  1. Raphe straight
  2. Distal raphe ends deflected to opposite sides

Species within the genus Envekadea are naviculoid, with a sigmoid raphe. The areolae are large and composed of rectangular to irregular polygons. Externally, the areolae are occluded by hymenes. The copulae are unoramented. A single chloropolast is present, which is H-shaped in valve view. Envekadea includes the former Navicula hedinii Hustedt and N. pseudocrassirostris Hustedt.

Envekadea species have been documented from marine and coastal waters (Foged 1984, Lange and Tiffany 2002, Lee et al. 2013), as well as from inland, saline springs (Kaczmarka and Rushforth 1983).

Cite This Page:
Spaulding, S. (2013). Envekadea. In Diatoms of the United States. Retrieved April 26, 2018, from http://westerndiatoms.colorado.edu/taxa/genus/envekadea

Contributor: Sarah Spaulding - April 2013