Pascherinema G.De Toni, 1936

Holotype species: Pascherinema moniliforme (Pascher) G.De Toni

Original publication and holotype designation: De Toni, G. (1936). Noterelle di nomenclatura algologica. VIII. Terzo elenco di Missoficee omonime. pp. 6. Brescia.

Description: Pseudofilamentous; pseudofilaments solitary, isolated, moniliform, uniseriate, heteropolar, composed of more or less elongated basal cells joined to the substrate by narrow and shortly elongated end, and from a row of spherical, barrel-shaped or obovate cells, which arise probably by the successive and repeated crosswise cell division; apical cell usually elongated, cylindrical and rounded. Without gelatinous sheath, but at the apex, where the cells divide into nanocytes (?), occurs very narrow, firm, colorless sheath. Cells with pale blue-green content. Cell division in pseudofilaments by repeated crosswise fission and grow before the next division into the original size. Apical enlarged cells divide sometimes successively in 2-16 nanocytes, which escape from the thin, firm sheath, opened at the apex (real sporangia ?; sheaths are not visible in pseudofilaments). Nanocytes motile, join to the substrate and change in a new basal cell, which start to divide crosswise in the upper part. One nanocyte remains sometimes joined to the pseudofilament and grows into normal vegetative cell. Both species distinguished in dimensions and slightly in cell form, and grow epiphytically on leaves on Sphagnum, or Potamogeton; described from Czechoslovakia (Bohemia). Not found after description, very problematic genus with strange morphology in cyanophytes (revision is needed; according to Drouet and Daily 1956 = fungi).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-03 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as neuter.

Most recent taxonomic treatment adopted: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=44952

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 03 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024