Nitzschia perminuta
(Grunow in Van Heurck) Peragallo 1903 Category: Nitzschioid
BASIONYM: Nitzschia frustulum var. perminuta Grunow in Van Heurck 1881
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Pat Kociolek - September 2011
Length Range: 8-20 µm
Width Range: 3-4 µm
Striae in 10 µm: 22-27
Description
Valves are linear to linear-lanceolate, with parallel margins. The distal valve tapers abruptly to form slightly protracted to rounded apices. Fibulae are distinct, numbering 11-13 in 10 µm. Striae are parallel and finely punctate.
Original Description
Basionym: Nitzschia frustulum var. perminuta
Author: Grunow in Van Heurck 1881
Length Range: µm
Striae in 10 µm:
Original Description
Original Images
Cite This Page:
Kociolek, P. (2011). Nitzschia perminuta . In Diatoms of the United States. Retrieved June 19, 2013, from http://westerndiatoms.colorado.edu/taxa/species/nitzschia_perminuta
Species: Nitzschia perminuta
Contributor: Pat Kociolek
Reviewer: Marina Potapova
Image Credit: Pat Kociolek
- Valves linear to linear-lanceolate
- Apices protracted to rounded
- Fibulae 11-13 in 10 µm
- Striae finely punctate
Valves are linear to linear-lanceolate, with parallel margins. The distal valve tapers abruptly to form slightly protracted to rounded apices. Striae are finely punctate. Fibulae are 11-13 in 10 µm.
Compare
Nitzschia perminuta is more robust and wider than N. hantzschiana. In addition, N. perminuta lacks a central nodule, a feature that further distinguishes it from N. hantzschiana. Some reports of N. perminuta from Oregon, Idaho and Montana have been misidentifications of N. oregona, which is more slender and linear.
Nitzschia oregona
Nitzschia hantzschiana
Rabenhorst
Citations
Krammer, K. and Lange-Bertalot, H. (1988). Bacillariophyceae. 2. Teil: Bacillariaceae, Epithemiaceae, Surirellaceae. In: Ettl, H., J. Gerloff, H. Heynig and D. Mollenhauer (eds.) Susswasserflora von Mitteleuropa, Band 2/2. Gustav Fisher Verlag, Jena.
Siver, P.A. and Hamilton, P.B. (2011). Diatoms of North America: The Freshwater Flora of Waterbodies on the Atlantic Coastal Plain. Iconographia Diatomologica 22.
Siver, P.A. and Hamilton, P.B. (2005). Observations on new and rare species of freshwater diatoms from Cape Cod, Massachusetts, USA. Canadian Journal of Botany 83:362-378.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 48126