Eunotia sudetica

O. Müller 1898      Category: Eunotioid
BASIONYM: Eunotia sudetica O. Müller 1898

Eunotia subherkiniensis

 

Eunotia tenella

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Loren Bahls - August 2013
Length Range: 22-43 µm
Width Range: 5.0-7.6 µm
Striae in 10 µm: 10-15

Description

Valves are dorsiventral. The dorsal margin is moderately arched, somewhat convex to nearly flat (or weakly concave in larger specimens) and subtly biundulate. The ventral margin is weakly concave to nearly flat. Apices are rostrate, broadly rounded and distinctly set off from the high dorsal ‘shoulders’. Terminal raphe ends are positioned on the ventral margin, some distance from the apices. Striae are weakly radiate, composed of fine areolae and nearly evenly spaced, although an occasional short stria may be interspersed along the dorsal margin. Under the SEM, the areolae can be seen to lie in separate depressions and number about 30 in 10 µm. Internally, the raphe fissure terminates in a raised helictoglossa.



Original Description

Basionym: Eunotia sudetica
Author: O. Müller 1898
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Bahls, L. (2013). Eunotia sudetica. In Diatoms of the United States. Retrieved April 17, 2014, from http://westerndiatoms.colorado.edu/taxa/species/eunotia_sudetica

Species: Eunotia sudetica

Contributor: Loren Bahls

Reviewer: Rex Lowe

Citations

Lange-Bertalot, H., Bak, M., Witkowski, A. and Tagliaventi, N. (2011). Eunotia and some related genera. Diatoms of the European Inland Waters and Comparable Habitats. 6: 747 pp.

Müller, O. (1898). Bacillariales aus den Hochseen des Riesengebirges. Forschungsber. Biol. Stat. Plön 6: 1-40.

Patrick, R.M. and Reimer, C.W. (1966). The Diatoms of the United States exclusive of Alaska and Hawaii, V. 1. Monographs of the Academy of Natural Sciences of Philadelphia 13.

Siver, P.A., Hamilton, P.B., Stachura-Suchoples, K. and Kociolek, J.P. (2005). Diatoms of North America. The Freshwater Flora of Cape Cod. Iconographia Diatomologica 14: 1-463.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Eunotia sudetica CAS

North American Diatom Ecological Database (NADED)

NADED ID: 33059

Autecology Discussion

Patrick and Reimer (1966) report Eunotia sudetica from acid to circumneutral waters in Pennsylvania and the southeastern United States. Siver et al. (2005) report this species from two acidic ponds on Cape Cod, Massachusetts. Lange-Bertalot et al. (2011) report that E. sudetica prefers small, running waters or wet bryophyte habitats. The one record of this species in the Montana Diatom Collection is from a lake high in the Sierra Nevada Mountains of California (photo below).

Images

Evolution Lake at an elevation of 3,313 m in the Sierra Nevada Range of central California, home of Eunotia sudetica.

Credit/Source: Trailspace.com