Tiny Organisms in Aquatic Habitats

Desmids –
 Archaeplastida (Part) 

Observations on Closterium striolatum

Gallery Prof. Rupert Lenzenweger

Position in the EOL taxonomic tree. Please click on the tree view below to access EOL (Encyclopedia of Life).

Closterium striolatum Ehrenberg ex Ralfs 1848

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: Closterium spirale Corda 1835
                               Closterium striolatum var. elongatum Rabenhorst 1868
                               Closterium subdirectum West 1889
                               Closterium striolatum var. orthonotum J.Roy 1890
                               Arthrodia striolata (Ralfs) Kuntze 1891
                               Arthrodia spiralis Corda ex Kuntze 1891
                               Arthrodia subdirecta (West) Kuntze 1891
                               Closterium striolatum var. subdirectum (West) Willi Krieger 1935

Closterium striolatum original graphic by Prof. Lenzenweger
Closterium striolatum

Description: The cells are (5)–8–12–(15) times as long as they are wide, cylindrical and straight in the middle, slightly curved and continuously narrowing towards the broadly rounded, slightly thickened cell ends. The cell wall is finely striped with usually easily recognizable belt bands, the end vacuoles usually contain one crystal each. It can be distinguished from the morphologically very similar Closterium costatum by both the finely striped cell wall and the shape of the cell ends.

Dimension: Length (160)–200–400–(600) µm, width (20)–25–40–(50) µm.

Occurrence:  A very adaptable species, it is widespread in both moderately acidic and alkaline waters, sometimes even in large numbers.

Left: Original graphic by Prof. Lenzenweger.
Right: Photomicrograph by Prof. Lenzenweger. For microphotography, the microscope illumination was adjusted in such a way that as many features as possible that are important for species identification are prominently displayed.

Copyright by Prof. Rupert Lenzenweger, Ried im Innkreis, Austria.

Curvature Index Closteriaceae

Characteristic data for the curvature according to Coesel & Meesters 2023

Curvature class: “(very) slightly curved”, sometimes straight.

Curvature index: 0.000–0.268

© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.

New items

New items