Pseudostaurosiropsis
Morales 2001 Category: Araphid
TYPE SPECIES: Pseudostaurosiropsis connecticutensis Morales
Image Credit: Eduardo Morales
CLASS: Fragilariophyceae
ORDER: Fragilariales
FAMILY:
- Striae uniseriate, radial
- Apical porefield present at each pole
- Valve margin spinose
- Spines flattened, bifurcate
Pseudostaruosiropsis includes species that are small, with elliptic to rounded valves. The striae are uniseriate, composed of 2-6 round areolae externally occluded with discoid volae. Two apical porefields are present, composed of a few, isolated pores. Spines are present at the valve margin, aligned with a stria. The spines are flattened and bifurcate. Valves lack rimoportulae.
To date, species have been described from Pseudostaruosiropsis, based on features visible in SEM.
Cite This Page:
Spaulding, S., and Edlund, M. (2009). Pseudostaurosiropsis. In Diatoms of the United States. Retrieved May 25, 2013, from http://westerndiatoms.colorado.edu/taxa/genus/Pseudostaurosiropsis
Contributor: Sarah Spaulding | Mark Edlund - January 2009
Reviewer: Sam Rushforth
Citations
Morales, E.A. (2001). Morphological studies in selected fragilarioid diatoms (Bacillariophyceae) from Connecticut waters (U.S.A.). Proceedings of the Academy of Natural Sciences of Philadelphia 151: 105-120.