Diatoma tenuis

Agardh 1812      Category: Araphid
SYNONYM(S): Diatoma elongatum var. tenuis (Agardh) Van Heurck 
REPORTED AS: Diatoma tenue var. elongatum (Patrick and Reimer 1966) 

Diatoma moniliformis


Diatoma vulgaris

LM scalebar = 10 µm = 80 pixels.


Contributor: Marina Potapova - June 2010
Length Range: 20-85 µm
Width Range: 2.9-4.9 µm
Striae in 10 µm: 45-60


Cells form zig-zag colonies. Frustules are biconcave in girdle view. In valve view, valves are linear with capitate apices. Valves at the smaller end of the size range have rostrate or subrostrate apices. Transapical ribs number 6-11 in 10 µm. Striae are uniseriate, but not visible under LM. Axial area is linear and very narrow. A rimportula is positioned within in a transapical rib or between ribs at one apex. Apical pore fields are present at both apices.

Original Description

Author: Agardh 1812
Length Range: µm
Striae in 10 µm:

Original Description

Diatoma Tenuis, filis decumbentibus linearibus fusco-luteis, articulis post copulationem alternatim solutis. Habitat in foliis dejectis aquaque submersis, ut in rivulo Luci Foglesång prope Ludam, unde inter alias algas apportavit amic. Ph. Doct. Bruzelius.

Original Images

Cite This Page:
Potapova, M. (2010). Diatoma tenuis. In Diatoms of the United States. Retrieved August 26, 2016, from http://westerndiatoms.colorado.edu/taxa/species/diatoma_tenuis

Species: Diatoma tenuis

Contributor: Marina Potapova

Reviewer: Rex Lowe


Agardh, C.A. (1812). Algarum decas prima. Litteris Berlingianis, Lundae. 56 pp.

Krammer, K. and Lange-Bertalot, H. (1991). Bacillariophyceae. 3. Teil: Centrales, Fragilariaceae, Eunotiaceae. In Ettl, H., Gerloff, J., Heynig, H. & Mollenhauer, D. (Eds.). Süsswasserflora von Mitteleuropa. 2(3): 1-576. Gustav Fisher Verlag, Stuttgart, Germany.

Patrick, R.M. and Reimer, C.W. (1966). The Diatoms of the United States exclusive of Alaska and Hawaii, V. 1. Monographs of the Academy of Natural Sciences of Philadelphia 13.

Snoeijs, P. and Potapova, M. (1998). Ecotypes or endemic species? A hypothesis on the evolution of Diatoma taxa (Bacillariophyta) in the northern Baltic Sea. Nova Hedwigia 67: 303-348.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Diatoma tenuis CAS

NCBI Genbank Taxonomy

Diatoma tenuis NCBI
Diatoma tenue NCBI

North American Diatom Ecological Database (NADED)

NADED ID: 27012

Autecology Discussion