Nitzschia regula var. robusta

Hustedt 1924      Category: Nitzschioid
BASIONYM: Nitzschia regula var. robusta Hustedt 1924

REPORTED AS: Nitzschia intermedia (Krammer and Lange-Bertalot 1988) | Nitzschia regula (Lange-Bertalot and Metzeltin 1996) 

Nitzschia recta

 

Nitzschia reversa

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Loren Bahls - May 2012
Length Range: 50-101 µm
Width Range: 5.2-7.4 µm
Striae in 10 µm: 23-25

Description

Valves are linear with short, wide, subcapitate apices. Fibulae are distinct and number 9-12 in 10 µm. The central two fibulae are equidistant and a central nodule is lacking. Striae are indistinctly punctate.



Original Description

Basionym: Nitzschia regula var. robusta
Author: Hustedt 1924
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Bahls, L. (2012). Nitzschia regula. In Diatoms of the United States. Retrieved September 17, 2014, from http://westerndiatoms.colorado.edu/taxa/species/nitzschia_regula_var._robusta

Species: Nitzschia regula

Contributor: Loren Bahls

Reviewer: Rex Lowe

Citations

Hustedt, F. (1924). Die Bacillariaceen-Vegetation des Sarekgebirges. Naturwiss. Untersuch. des Sarekgeb. in Schwed.-Lappland, 3 (Bot.): 525-626.

Simonsen, R. (1987). Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. J. Cramer, Berlin & Stuttgart 1: 525 pp.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Nitzschia regula var. robusta CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Nitzschia regula var. robusta has been found in a few cold-water and circumneutral ponds and streams with low levels of electrolytes in the Northern Rocky Mountains of Montana and Alberta. This taxon was described from samples collected in Swedish Lapland.

Images

Paradise Pond below Rising Wolf Mountain, Glacier National Park, Montana: home of Nitzschia regula var. robusta.

Credit/Source: Loren Bahls