Gomphoneis eriense
(Grun.) Skv. in Skv. and Meyer 1928 Category: Asymmetrical biraphid
BASIONYM: Gomphonema eriense Grunow 1878
LM scalebar = 10 µm = 40 pixels.
Observations
Contributor: Pat Kociolek - September 2011
Length Range: 25- 67 µm
Width Range: 9.5-13.0 µm
Striae in 10 µm: 12-16
Description
Larger valves are lanceolate-clavate, angular in outline, with only slightly protracted headpole and broadly rounded footpole. The axial area is narrow, broadening to form a small circular central area. The raphe is lateral and undulate. The striae are radiate, strongly so at the central portion of the valve. The striae are broad, biseriate, with individual areolae observable with oblique light in the light microscope. Longitudinal lines are distinct and positioned near the axial area. A single, distinct stigma is present in the central area.
Original Description
Basionym: Gomphonema eriense
Author: Grunow 1878
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 May 19, 2013, from http://westerndiatoms.colorado.edu/taxa/species/gomphoneis_eriense
Species: Gomphoneis eriense
Contributor: Pat Kociolek
Reviewer: Marina Potapova
Image Credit: Pat Kociolek
- Larger valves lanceolate-clavate and angular
- Longitudinal lines distinct
- Single, distinct stigma present in the central area
Larger valves are lanceolate-clavate and angular, with a slightly protracted headpole and broadly rounded footpole. The raphe is lateral and undulate. Longitudinal lines are distinct and positioned near the axial area. A single, distinct stigma is present in the central area.
Compare
Gomphoneis eriense has a less protracted headpole compared to G. variabilis, is more linear than G. pacificum, and has more rounded headpoles as compared to G. rostrata and G. angularis.
Gomphoneis eriense var. variabilis
Gomphoneis pacificum
Gomphoneis rostrata
Gomphoneis eriense var. angularis
Citations
Grunow, A. (1878). Algen und Diatomaceen aus dem Kaspischen Meere. In: O. Schneider (ed.), Naturwissenschafte Beiträge zur Kenntniss der Kaukasusländer, auf Grund seiner Sammelbeute. Dresden, pp. 98-132, pls. 3-4.
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
Skvortzow, B.W. and Meyer, C.I. (1928). A contribution to the diatoms of Baikal Lake. Proceedings of the Sungaree River Biological Station, 1(5): 1-55.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 36001