Placocista spinosa, 105 µm, Tirol
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
Placocista spinosa, 118 µm, Sphagnum, Jokkmokk, Sweden
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)
Placocista spinosa, 136 µm – British Columbia, sample: Thierry Heger