Placocista spinosa
Placocista spinosa
Placocista spinosa, 136 µm - British Columbia, sample: Thierry Heger

 

 

Placocista spinosa (Penard, 1899)

 

Diagnosis: shell broad, ovoid, strongly compressed, with acute lateral border; shell edge with spines; shell composed of many small scales; along the aperture is an area covered with very minute scales; aperture a broad but very flattened slit, biconvex; nucleus spherical, with fragmented nucleolar material; filopodia.

 

Dimensions: 105-145 µm

 

Ecology: Sphagnum, peat bogs

 

Remarks:

 

Placocista spinosa, 105 µm, Tirol
Placocista spinosa, 105 µm, Tirol
Placocista spinosa, 145 µm, Ecuador
Placocista spinosa, 145 µm, Ecuador
P. spinosa, Germany (sampled by Hans Rothauscher, 2019)
P. spinosa, Germany (sampled by Hans Rothauscher, 2019)
P. spinosa, Germany (sampled by Hans Rothauscher, 2019)