Polyedriopsis spinulosa (Schmidle) Schmidle 1899

Komarzewska, Katarzyna & Kowalski, Wojciech W. A., 2024, Staurastrum cyclacanthum var. pseudobrevissimus - a new variety of desmids and some other rare taxa found in peat bogs (Western Pomerania, Poland), Annales Universitatis Paedagogicae Cracoviensis Studia Naturae 9, pp. 9-32 : 16

¬ Polyedriopsis spinulosa (Schmidle) Schmidle 1899 , Fig. 7C–G – Appendix 1

Basionym: Tetraedron spinulosum Schmidle 1896

Synonym: Lagerheimia urmaniensis Wołosz. 1911 .

Description: Single, tetradry, 5-sided cells, extended into conical, broadly rounded arms, separated by a wide and shallow bay. The horns are equipped with a bundle of 2–3 delicate hyaline hairs. The cell wall is smooth. Wall chromatophore with one pyrenoid. Cell diameter 15.3–25.5 µm, hairs up to 20.4 µm long.

Found in site: The taxon in the collected research material generally occurred in waters in all peat cut. Its presence was most often recorded in peat cut 1, 2, 3 in samples collected in July 2005. In other water reservoirs it was not very abundant in samples from various research dates.

Distribution in Poland: From Poland, reported so far from four localities ( Bucka, 1965; Sosnowska-Półtoracka, 1968; Uherkovich, 1970; Szyjkowski, 1982). In the Catalog of prokaryotic and eukaryotic algae in Poland ( Siemińska, Wołowski, 2003), the occurrence of the taxon is given in the works of Buck (1965), Siemińska et Siemińska (1967), [Sosnowska-] Póltoracka (1968), Szklarczyk-Gazdowa (1965), Uherkovich (1971), Szyjkowski (1982).

General distribution and ecology: Polyedriopsis spinulosa occurs in the plankton of lakes and ponds in Europe, Central America and the Middle East.

Figures

Fig. 7. A–K.A–B.Korshikoviella limnetica; C–G.Polyedriopsis spinulosa: various forms of cells; H–K.Monactinus simplex var.echinulatum (= Pediastrumsimplex var.echinulatum):H–J.four- and eight-cell cenobia, K. marginal cell of cenobium with pyrenoid (orig. engravings W. W.A. Kowalski)