Desmids –
Archaeplastida (Part)
Observations on Staurodesmus convergens
Gallery Prof. Rupert Lenzenweger
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Staurodesmus convergens (Ehrenberg ex Ralfs) S.Lillieroth 1950
Most likely ID: n.a.
Basionym: Arthrodesmus convergens Ehrenberg ex Ralfs 1848
Add’l Synonyms: Staurastrum convergens Meneghini 1840
Phycastrum convergens Perty 1849
Staurastrum convergens (Perty) Rabenhorst ????
Staurastrum convergens var. pumila Nordstedt 1870
Arthrodesmus minor W.B.Turner 1893
Arthrodesmus convergens f. typica W.B.Turner 1893
Staurodesmus convergens var. ralfsii Teiling 1967
Staurodesmus convergens var. laportei Teiling 1967
Staurodesmus convergens var. pumilus (Nordstedt) Teiling 1967
Description: Cells are wider than long, the cell halves have elliptical shapes. The cell halves are laterally covered with large inward bent spines. The central cuts are strongly broadened towards the periphery.
Dimension: Length 35–55 µm, width 50–80 µm (including spines).
Occurrence: In acidic to medium acidic fens. Ubiquitous and common.
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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teliferum
pseudopyramidatum
pyramidatum
scabrum
capitulum
forficulatum
oligacanthum
var. incisum
chlamydosporum
arcuatum
var. subavicula
truncata
var. quadrata
rubescens
venustum
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ralfsii
var. montanum
ralfsii
digitus
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intermedium
dissiliens
kuetzingii
ralfsii
var. hybridum
aureus
botrytis
quadratum
quadrum
crassa
digitus
var. lamellosum
digitus
var. latum
oblongum
interruptum
spec.
spec.
kinahanii
spec.
polymorphum
var. polymorphum
brebissonii
rotata
swartzii
antilopaeum
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