Hippodonta coxiae
Lange-Bertalot 2001 Category: Symmetrical biraphid
BASIONYM: Hippodonta coxiae Lange-Bertalot 2001
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Marina Potapova -
Length Range: 16.3-20.6 µm
Width Range: 4.2-5.2 µm
Striae in 10 µm: 11-13
Description
Valves are lanceolate with subrostrate apices. The axial area is narrow and linear. The central area is small and rectangular to elliptical. The raphe is straight, filiform, with slightly expanded external proximal ends. The distal raphe ends are deflected to the secondary valve side. The striae are uniseriate, slightly radiate to parallel in the valve center and slightly convergent at the apices. The areolae are elongated, mostly oriented to the apical axis and approximately 30 in 10 μm. A hylaine area and one or two apical rows of areolae are present at each end of the valve.
Original Description
Basionym: Hippodonta coxiae
Author: Lange-Bertalot 2001
Length Range: 15-21 µm
Width Range: 4.8-5.4 µm
Striae in 10 µm: 11-12.5
Original Description
Original Images
Cite This Page:
Potapova, M. (). Hippodonta coxiae . In Diatoms of the United States. Retrieved May 18, 2013, from http://westerndiatoms.colorado.edu/taxa/species/hippodonta_coxiae
Species: Hippodonta coxiae
Contributor: Marina Potapova
Reviewer: Pat Kociolek
Image Credit: Marina Potapova
- Valves 4.2-5.2 μm wide
- Apices subrostrate
- Striae uniseriate, 11-13 in 10 μm
Valves are lanceolate with subrostrate apices. The striae are uniseriate, slightly radiate to parallel in the valve center, slightly convergent at the apices and number 11-13 in 10 μm. A hyaline area and one apical row of areolae are present at each end of the valve.
Compare
Hippodonta coxiae can be confused with H. capitata subsp. iberoamericana, which is similar in size and valve shape, but has broader biseriate striae, which are also more strongly radiate at the valve center.
Hippodonta capitata subsp. iberoamericana
Citations
Lange-Bertalot, H. (2001). Navicula sensu stricto, 10 genera separated from Navicula sensu lato, Frustulia. Diatoms of Europe 2: 1-526.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 213005