Nitzschia acicularis

(Kützing) W. Smith 1853      Category: Nitzschioid
BASIONYM: Synedra acicularis Kützing 1844

Neidium undulatum


Nitzschia alpina

LM scalebar = 10 µm = 80 pixels.


Contributor: Pat Kociolek - September 2011
Length Range: 30.0-100.0 µm
Width Range: 3.0-4.0 µm
Striae in 10 µm:


The central part of the valve has nearly parallel sides and a sharp tapering. The extended distal portions of the valve are tapered towards fine apices. The fibulae are fine and restricted to the margin, with a density 16-21 in 10 µm. The striae are not visible with light microscopy.

Original Description

Basionym: Synedra acicularis
Author: Kützing 1844
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Kociolek, P. (2011). Nitzschia acicularis. In Diatoms of the United States. Retrieved October 05, 2015, from

Species: Nitzschia acicularis

Contributor: Pat Kociolek

Reviewer: Sarah Spaulding


Kützing, F.T. (1844). Die kieselschaligen Bacillarien oder Diatomeen. Nordhausen. 152 pp., 30 pls.

Smith, W. (1853). Synopsis of British Diatomaceae. John Van Voorst, London 1853. 89 pp., pls 1-31.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Nitzschia acicularis CAS

NCBI Genbank Taxonomy

Nitzschia acicularis NCBI

North American Diatom Ecological Database (NADED)

NADED ID: 48002

Autecology Discussion