Gomphoneis eriense var. angularis

Kociolek and Stoermer 1988      Category: Asymmetrical biraphid
BASIONYM: Gomphoneis eriense var. angularis Kociolek and Stoermer 1988

Gomphoneis eriense


Gomphoneis eriense var. apiculata

LM scalebar = 10 µm = 80 pixels.


Contributor: Pat Kociolek - February 2011
Length Range: 34-67 µm
Width Range: 8-12 µm
Striae in 10 µm: 10-13 at the central portion, 14-16 at the poles


Valves trullate, with broadest portion of the valve outline located towards the footpole from the central nodule. Apices rounded. Raphe distinctly undulate, with rounded external proximal ends. The axial area is narrow, straight, expanded slightly to form a linear-ellipsoidal central area that bears a single, relatively large stigma. A longitudinal line is positioned next to, or near, the axial area. Striae are distinctly biseriate, radiate near the central area, becoming parallel then radiate at the headpole, and becoming strongly radiate at the footpole. A distinct apical pore field is present at the footpole.

Original Description

Basionym: Gomphoneis eriense var. angularis
Author: Kociolek and Stoermer 1988
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Kociolek, P. (2011). Gomphoneis eriense. In Diatoms of the United States. Retrieved August 29, 2016, from http://westerndiatoms.colorado.edu/taxa/species/gomphoneis_angularis

Species: Gomphoneis eriense

Contributor: Pat Kociolek

Reviewer: Rex Lowe


Kociolek, J.P. and Stoermer, E.F. (1988). Taxonomy, ultrastructure and distribution of Gomphoneis herculeana, G. eriense and closely related species (Naviculales: Gomphonemataceae). Proc. Acad. Nat. Sci. Phil. 140: 24-97. http://www.jstor.org/stable/4064935

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Gomphoneis eriense var. angularis CAS

North American Diatom Ecological Database (NADED)

NADED ID: 36006

Autecology Discussion