Cosmarium
Desmidiaceae –
Archaeplastida
Observations on Cosmarium quadrum
Gallery Prof. Rupert Lenzenweger
Protisten / Home / 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
discoides
gibba
cassis
elongata
oblonga
bathystoma
capreolata
var. masurica
globulosa
truncata
parva
globularis
fimbriata
chinensis
wailesii
concinnus
filifera
lineare
urceolata
enchelys
oblonga
artocrea
crenulata
spec.
brevicolla
placentula
var. euglypta
bryophila
spiralis
galeata
mitrata
gibbosa
didelta
immanata
acuminata
granulata
mucosa
var. laevicincta
rectum
bacillifera
brevicaulis
nasutum
striolatum
teliferum
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