Cosmarium
Desmidiaceae –
Archaeplastida
Observations on Cosmarium quadrum
Gallery Prof. Rupert Lenzenweger
Protisten / Protisten.de – created by Wolfgang Bettighofer / Algae green-colored (2: Desmidiaceae): Cosmarium / Cosmarium quadrum – Prof. R. Lenzenweger
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Cosmarium quadrum P.Lundell 1871
Most likely ID: n.a.
Basionym: n.a.
Add’l Synonyms: Ursinella quadrum (Lundell) Kuntze ????
Cosmarium dentiferum var. quadrum (P.Lundell) Playfair ????
Description: The cells are a little longer than wide, rounded off rectangular in shape. The sides are straight or flat convex. The central cuts are deep, linear, and extended outwards. The cell wall is covered with warts. They run in crossing rows (under an angle of appr. 45°). Around each of the warts are pores, which build symmetrical hexagon in their arrangement.
Dimension: Length 55–90 µm, width 50–85 µm.
Occurrence: Common in littoral region and quaking bogs of moor ponds and in moderate acidic moorlands in Central Europe.
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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New items
acutiformis
astraea
bipyramidatum
cinctum
pulchrum
melicerta
lunatus
brebissonii
montanum
directum
truncatum
vestitum
var. vestitum
meneghinianum
didelta
furcata
jenneri
radiosa
ventricosum
insigne
cucurbita
fimbriata
cucurbita
wailesii
filifera
brightwellii

























