Gomphonema brebissonii

Kützing 1849      Category: Asymmetrical biraphid
BASIONYM: Gomphonema brebissonii Kützing 1849
SYNONYM(S): Gomphonema  acuminatum var. brebissonii  (Kützing) Grunow in Van Heurck 1880 

Gomphonema brasiliense


Gomphonema consector

LM scalebar = 10 µm = 80 pixels.


Contributor: Pat Kociolek - September 2011
Length Range: 17-48 µm
Width Range: 6-9 µm
Striae in 10 µm: 9-12


Valves bluntly acuminate, with the headpole protracted and bluntly rounded. Valve biconstricted, broadest near the headpole, but tumid at the center of the valve. The footpole is rounded. The axial area is straight and distinct, but the central area is barely differentiated. The raphe is lateral and undulate. The striae are radiate about the center, become parallel towards the headpole, and may become convergent at the apex. Striae are parallel becoming strongly radiate at the footpole. About the center of the valve the central striae on either side of the axial area are separated more from those next to them. One of the central striae terminate next to an isolated stigma. Apical pore fields are distinct at the footpole.

Original Description

Basionym: Gomphonema brebissonii
Author: Kützing 1849
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Kociolek, P. (2011). Gomphonema brebissonii . In Diatoms of the United States. Retrieved October 21, 2016, from http://westerndiatoms.colorado.edu/taxa/species/gomphonema_brebissonii

Species: Gomphonema brebissonii

Contributor: Pat Kociolek

Reviewer: Rex Lowe


Mitić–Kopanja, D., Wetzel, C.E., Ector, E. and Levkov, Z. (2014). Two new Gomphonema Ehrenberg (Bacillariophyceae) species from Macedonia and comparison with type material of G. brebissonii Kützing. Fottea, Olomouc 14(2): 149–160.

Patrick, R.M. and Reimer, C.W. (1975). The Diatoms of the United States, exclusive of Alaska and Hawaii, V. 2. Monographs of the Academy of Natural Sciences of Philadelphia 13.

Reichardt, E. (1999). Zur Revision der Gattung Gomphonema: Die Arten um G. affine/insigne, G. angustatum/micropus, G. acuminatum sowie gomphonemoide Diatomeen aus dem Oberoligozän in Böhmen. Annotated Diatom Micrographs. Edited by Horst Lange-Bertalot. Iconographia Diatomologica, Volume 8, A.R.G. Gantner.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Gomphonema brebissonii CAS

North American Diatom Ecological Database (NADED)

NADED ID: 37084

Autecology Discussion

EMAP Assessment

The Environmental Protection Agency (EPA) western Environmental Monitoring and Assessment Program (EMAP) study was completed during the years 2000-2004 (see citations at bottom of this page). Over 1200 streams and rivers in 12 western states (Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming) were selected for sampling based on a stratified randomized design. This type of design insures that ecological resources are sampled in proportion to their actual geographical presence. Stratified randomized design also allows for estimates of stream length with a known confidence in several “condition classes” (good or least-disturbed, intermediately-disturbed, and poor or most-disturbed) for biotic condition, chemistry and habitat.

EMAP Distribution

Gomphonema brebissonii

EMAP Response Plots

Gomphonema brebissonii

EMAP citations

Results are published in:

Johnson, T., Hermann, K., Spaulding, S., Beyea, B., Theel, C., Sada, R., Bollman, W., Bowman, J., Larsen, A., Vining, K., Ostermiller, J., Petersen, D. Hargett, E. and Zumberge, J. (2009). An ecological assessment of USEPA Region 8 streams and rivers. U.S. Environmental Protection Agency Region 8 Report, 178 p.

Stoddard, J. L., Peck, D. V., Olsen, A. R., Larsen, D. P., Van Sickle, J., Hawkins, C. P., Hughes, R. M., Whittier, T. R., Lomnicky, G. A., Herlihy, A. T., Kaufman, P. R., Peterson, S. A., Ringold, P. L., Paulsen, S. G., and Blair, R. (2005). Environmental Monitoring and Assessment Program (EMAP) western streams and rivers statistical summary. U.S. Environmental Protection Agency Report 620/R-05/006, 1,762 p.

Stoddard, J. L., Peck, D. V., Paulsen, S. G., Van Sickle, J., Hawkins, C. P., Herlihy, A. T., Hughes, R. M., Kaufman, P. R., Larsen, D. P., Lomnicky, G. A., Olsen, A. R., Peterson, S. A., Ringold, P. L., and Whittier, T. R. (2005). An ecological assessment of western streams and rivers. U.S. Environmental Protection Agency Report 620/R-05/005, 49 p.