Craspedostauros

Cox 1999      Category: Symmetrical biraphid
TYPE SPECIES: Craspedostauros neoconstrictus Cox

Cosmioneis

 

Craticula

CLASS: Bacillariophyceae
  ORDER: Naviculales
    FAMILY:

  1. Stauros narrow
  2. Frustules constricted in girdle view

SPECIES OF CRASPEDOSTAUROS ARE NOT KNOWN TO OCCUR IN NORTH AMERICA

Valves of Craspedostauros are linear, with a narrow central stauros. In girdle view, frustules are constricted around the central stauros. Cells often lie in girdle view, because of the deep girdle. Numerous copulae, or girdle bands, are present. Areolae are cribrate. Live cells have two lobed chloroplasts.

Species within Craspedostauros were previously included in Stauroneis. While Craspedostauros possesses a stauros, the genus is primarily marine and possesses areolae composed of transverse slits. In Staurophora, the fascia does not extend to the margin of the valve face in and that genus possesses finely punctate areolae.

Cite This Page:
Spaulding, S. (2013). Craspedostauros. In Diatoms of the United States. Retrieved October 20, 2014, from http://westerndiatoms.colorado.edu/taxa/genus/craspedostauros

Contributor: Sarah Spaulding - April 2013