Tiny Organisms in Aquatic Habitats

Desmids –
 Archaeplastida (Part) 

Observations on Closterium dianae

Gallery Prof. Rupert Lenzenweger

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

Closterium dianae Ehrenberg ex Ralfs 1848

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: Arthrodia dianae (Ralfs) Kuntze 1891

Closterium diane
Closterium diane

Description: The cells are (9)–10–14–(16) times longer than they are wide, evenly curved, and continuously narrow towards the slightly truncated cell ends, in which a small button-like thickening (end pore) is usually also visible. The cell wall is smooth, and there are no girdle bands. Distinguished from similarly curved closteria by its extremely slender shape.

Dimension: Length (160)–180–300–(380) µm, width (15)–20–30–(40) µm.

Occurrence:  Commonly found in weakly to moderately acidic small water bodies of transitional mires and the like.

Note: The image on the right shows the strongly curved variety arcuatum.

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

Curvature Index Closteriaceae

Characteristic data for the curvature according to Coesel & Meesters 2023

Curvature: fairly strongly arched

Curvature index: 0.33–0.66

© 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.

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