Closterium, beak-like

subscription PVIK

Closterium cells with a long, beak-like end of the cell. Cells long and straight, the middle part fusiform, only slightly curved in the ends. End of the cells empty of chloroplast. Cells more or less clearly striated.

6 taxa in PVIK:
Closterium kuetzingii var. kuetzingii
Closterium kuetzingii var. vittatum
Closterium rostratum var. rostratum
Closterium setaceum var. elongatum
Closterium setaceum var. setaceum
Closterium setaceum var. vittatum

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Literature used for the key:
Coesel, Peter F.M. & Meesters, Koos (J.) 2007. Desmids of the Lowlands. Mesotaeniaceae and Desmidiaceae of the European Lowlands. KNNV, Zeist. 351 p.
Coesel, Peter F.M. & Meesters, Koos (J.) 2023. Desmids of the Lowlands. 2nd revised and extended edition. KNNV, Zeist. 424 p.
Lenzenweger, Rupert 1996. Desmidiaceenflora von Österreich. Teil 1. Bibliotheca Phycologica, Band 101. J. Cramer.162 s.
Ruzicka, J., 1977. Die Desmidiaceen Mitteleuropas. Band 1, Lief. 1. – E.Schweizerbart, Stuttgart
Van Westen, M., 2024. Sieralgen in Drenthe. Private Edition. ISBN: 9789403755205. p. 666