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)
Contributor: Loren Bahls - May 2012
Length Range: 50-101 µm
Width Range: 5.2-7.4 µm
Striae in 10 µm: 23-25
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.
Basionym: Nitzschia regula var. robusta
Author: Hustedt 1924
Length Range: µm
Striae in 10 µm:
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.
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.
Paradise Pond below Rising Wolf Mountain, Glacier National Park, Montana: home of Nitzschia regula var. robusta.
Credit/Source: Loren Bahls