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
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 May 25, 2013, from http://westerndiatoms.colorado.edu/taxa/species/nitzschia_dissipata_subsp._oligotraphenta
Species: Nitzschia dissipata
Contributor: Kalina Manoylov
Reviewer: Marina Potapova
Image Credit: Kalina Manoylov
- Valves narrow with parallel sites
- Ends capitate
- Striae not visible with LM
- Raphe eccentric
Valves are delicate, narrow with parallel sides and capitate ends. Keel strongly eccentric. Striae are not resolvable in the light microscope.
Compare
Nitzschia dissipata overlaps in size with Nitzschia dissipata var. oligotraphenta, but the latter has strongly capitate ends.
Nitzschia dissipata
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)
California Academy of Sciences (CAS)
Nitzschia dissipata subsp. oligotraphenta CAS
North American Diatom Ecological Database (NADED)
NADED ID: 48596