Tiny Organisms in Aquatic Habitats

Desmids –
 Archaeplastida (Part) 

Observations on Closterium parvulum

Gallery Prof. Rupert Lenzenweger

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

Closterium parvulum Nägeli 1849

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: Arthrodia parvula (Nägeli) Kuntze 1891

Closterium parvulum original graphic by Prof. Lenzenweger
Closterium parvulum

Description: The cells are 6–15 times longer than they are wide, uniformly curved, and narrower towards the ends. These are narrowly rounded with a small end pore and a few crystals in the vacuoles. The cell wall is smooth, with no girdle bands. In contrast to the similar Closterium dianae, the shape of Closterium parvulum is noticeably more stocky.

Dimension: Length (75)–90–130–(160) µm, width (9)–10–15–(18) µm.

Occurrence:  Widely distributed in ponds, pools, silting zones and the like, 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: (rather) strongly arched

Curvature index: 0.45–0.8

© 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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