Visit us at

Diatoms of the United States is now known as Diatoms of North America.
This site has been redesigned and updated, and will be closing soon.

Hippodonta coxiae

Lange-Bert. 2001      Category: Symmetrical biraphid

Hippodonta capitata subsp. iberoamericana


Hippodonta gravistriata

LM scalebar = 10 µm = 80 pixels.


Contributor: Marina Potapova - January 2011
Length Range: 16-21 µm
Width Range: 4.2-5.2 µm
Striae in 10 µm: 11-13


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

Author: Lange-Bert. 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. (2011). Hippodonta coxiae . In Diatoms of the United States. Retrieved May 26, 2018, from

Species: Hippodonta coxiae

Contributor: Marina Potapova

Reviewer: Pat Kociolek


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)

Hippodonta coxiae CAS

North American Diatom Ecological Database (NADED)

NADED ID: 213005

Autecology Discussion