portrait

Description:

Staurastrum polonicum RACIB

 The cells are up to 1.4 times longer than wide. The cell halves are rounded off sexangular in shape with bulged out sides and broadly truncated vertex. Staurastrum polonicum RACIB.

 Around the basis of the cell halves there is a ring of tiny spherical calottes. The central cuts are far opened towards the periphery. The vertex view is circular with 8 to 9 shallow waves. Another ring of such bulges leads around the vertex center. The cell wall is closely covered by tiny warts.

    Dimension: Length 60 – 65 µm, width 45 – 50 µm

 Ecology: In little acidic fens and siltation zones. Occurrence: Ubiquitous