Gomphoneis herculeana var. abundans

Kociolek and Stoermer 1988      Category: Asymmetrical biraphid

Gomphoneis herculeana


Gomphoneis herculeana var. lowei

LM scalebar = 10 µm = 40 pixels.


Contributor: Pat Kociolek - January 2011
Length Range: 76-160 µm
Width Range: 16-25 µm
Striae in 10 µm: 12-14 at the headpole, 13-16 at the footpole


Valves linear-clavate, with a swollen middle section of the valve. Axial area narrow, straight and forming a relatively small, irregularly rounded central area that bears a single stigma. Raphe lateral, weakly undulate, with small external proximal ends. Striae are biseriate, with the areolae arranged alternately. Striae are radiate, becoming strongly radiate near the footpole. Striae number 8 to 12 in 10 µm in the central portion of the valve, 12 to 14 in 10 µm at the headpole and 13 to 16 in 10 µm at the footpole. Longitudinal lines are positioned approximately one-half the way between the axial area and margin. The apical pore fields are distinctly bilobed.

Original Description

Author: Kociolek and Stoermer 1988
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Kociolek, P. (2011). Gomphoneis herculeana. In Diatoms of the United States. Retrieved April 19, 2018, from http://westerndiatoms.colorado.edu/taxa/species/gomphoneis_abundans

Species: Gomphoneis herculeana

Contributor: Pat Kociolek

Reviewer: Rex Lowe


Kociolek, J.P. and Stoermer, E.F. (1988). A preliminary investigation of the phylogenetic relationships among the freshwater, apical porefield-bearing cymbelloid and gomphonemoid diatoms (Bacillariophyceae). Journal of Phycology 24: 377-385. 10.1111/j.1529-8817.1988.tb04480.x

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Gomphoneis herculeana var. abundans CAS

North American Diatom Ecological Database (NADED)


Autecology Discussion

Known only from Lake Tahoe and surrounding habitats, and from Montana.