Desmidiales and
Zygnematales –
Archaeplastida
Observations on Docidium undulatum
Gallery Prof. Rupert Lenzenweger
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Docidium undulatum Bailey 1851
Most likely ID: n.a.
Basionym: n.a.
Add’l Synonyms: Pleurotaenium dilatatum Cleve 1864
Description: The cells are (10)–12–18–(20) times longer than wide with truncated ends. The sides are repeatedly flatly undulated. The central cut is little formed. On both sides around the cut runs a ring with tiny, broadly rounded nipples. The cell wall is delicately punctured.
Dimension: Length (165)–200–250–(300) µm, width (10)–12–16–(18) µm.
Occurrence: Acidophilic alga, in acidic fens together with Micrasterias jenneri, Micrasterias truncata and Euastrum armatum.
Ubiquitous.
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.
© 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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