Nitzschia dissipata subsp. oligotraphenta

Lange-Bertalot in Lange-Bertalot and Metzeltin 1996      Category: Nitzschioid
BASIONYM: Nitzschia dissipata subsp. oligotraphenta Lange-Bertalot in Lange-Bertalot and Metzeltin 1996

Nitzschia dissipata

 

Nitzschia exilis

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Kalina Manoylov - October 2011
Length Range: 30-46.1 µm
Width Range: 3.5-5 µm
Striae in 10 µm: > 40

Description

Valves are linear to linear-lanceolate with parallel sides. The valve ends are well defined and capitate. The raphe is prominent and eccentric. Fibulae are distinct and parallel to the transapical axis. Interfibular spaces are rectangular to square, fibulae 8-11 in 10 µm. Striae are not visible with LM. This species is found in oligotrophic habitats.



Original Description

Basionym: Nitzschia dissipata subsp. oligotraphenta
Author: Lange-Bertalot in Lange-Bertalot and Metzeltin 1996
Length Range: 30-4 µm
Width Range: 3-4 µm
Striae in 10 µm: 46-48

Original Description

Latin: ssp. dissipata differt valvis ad instar regulariter potius linearibus vel anguste lineari-lanceolatis nec latius lanceolatis item apicibus distincte capitulatis. Longitudo 30-45 µm, latitude 3-4 µm. Carina valde excentrica posita. Fibulae 8,5-11,5 in 10 µm. Striae transapicales vix discernandae in microscopo photonico, 46-48 in 10 µm. (in microscopo electronico).

German: Im Unterschied zu ssp. dissipata sind die Schalen regelmäßig linear bis schmal lineal-lanzettlich und die Enden sind (in geeigneter Lage sichtbar) deutlich kopfig vorgezogen. Länge 30-45 µm, breite 3-4 µm. Der Raphenkiel leegt stets starker sxzentrisch. Fibulae 8,5-11,5/10 µm, Streifen 46-48/ 10 µm.

Original Images


Cite This Page:
Manoylov, K. (2011). Nitzschia dissipata. In Diatoms of the United States. Retrieved November 25, 2014, from http://westerndiatoms.colorado.edu/taxa/species/nitzschia_dissipata_subsp._oligotraphenta

Species: Nitzschia dissipata

Contributor: Kalina Manoylov

Reviewer: Marina Potapova

Citations

Lange-Bertalot, H. and Metzeltin, D. (1996). Indicators of oligotrophy - 800 taxa representative of three ecologically distinct lake types, Carbonate buffered - Oligodystrophic - Weakly buffered soft water. Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 2. Ecology, Diversity, Taxonomy. Koeltz Scientific Books. Königstein, Germany, 2:390 pp.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Nitzschia dissipata subsp. oligotraphenta CAS

North American Diatom Ecological Database (NADED)

NADED ID: 48596

Autecology Discussion