portrait

Description:

Cosmarium obsoletum (HANTSCH) REINSCH.var. minus (MESSIK.) KRIEG. & GERLOFF The cells are almost as long as wide and broadly elliptical in shape. The central cut is deep. The cell halves are semicircular and broadly rounded off at the basis, with a bulge-like thickened cell wall. The central constriction is deep. Scattered over the cell wall are closely packed pores.  Dimension: Length 36 – 40 µm, width: 34 – 36 µm Ecology: Sporadic up to rather rare in moorlands of medium acidity.  Occurrence: Only known from Austria and Switzerland hitherto.