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Actinosphaeridium

Actinosphaeridium spec.

Diagnosis: Cell surrounded by a membranous shell, with an outer mucous layer. Filopodia with granules, sometimes branching. Cell stalked.

Ecology: I found this specimen in a sample from a peatbog in Tirol, Austria, collected by Angie Opitz in 2015.

Remarks: I’m not convinced that this specimen is A. pedatus, because of the thick mucous layer.

Actinosphaeridium
Actinosphaeridium
Habitus, branched filopodium
Actinosphaeridium
Actinosphaeridium
Phase contrast; arrows point to spots where filopodia “push” the mucuos like a tent pole.
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