Capartogramma
Kufferath 1956 Category: Symmetrical biraphid
TYPE SPECIES: Capartogramma jeanii Kufferath
Image Credit: Marina Potapova
CLASS: Bacillariophyceae
ORDER: Naviculales
FAMILY:
- Central region X-shaped
- Pseudosepta present
- Axial area narrow
- Striate uniseriate, punctate
Capartogramma is characterized by a very distinctive "x-shaped" thickening of silica near the central part of the valve. Frustules are generally lanceolate in valve outline. Pseudosepta are present at the valve apices. The raphe is positioned within a narrow axial area. Striae are uniseriate and punctate.
Capartogramma is monotypic in North America (C. crucicula [Grunow ex Cleve] Ross). This species is found in rivers of varying conductance in the eastern and southern US. It is also common in tropical areas, particularly oceanic islands.
Cite This Page:
Spaulding, S., and Edlund, M. (2009). Capartogramma. In Diatoms of the United States. Retrieved May 22, 2013, from http://westerndiatoms.colorado.edu/taxa/genus/Capartogramma
Contributor: Sarah Spaulding | Mark Edlund - January 2009
Reviewer: Sam Rushforth
Citations
Patrick, R.M. and Reimer, C.W. (1966). The Diatoms of the United States exclusive of Alaska and Hawaii, V. 1. Monographs of the Academy of Natural Sciences of Philadelphia 13.
Ross, R. (1963). The diatom genus Capartogramma and the identity of Shizostauron. Bulletin of the British Museum (Natural History) Botany 3: 49-92.