Borzinema G.De Toni, 1936

Holotype species: Borzinema rupicola (Borzì) 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: Filamentous - thallose; thallus thin, flat, felt-like. Filaments free, tangled, creeping, regularly and Tolypothrix-like false branched, with single branches; older filaments thick, enveloped by a thick, lamellate sheath, younger filaments with thin, homogeneous sheath. Trichomes uniseriate, old ones torulous, deeply constricted at crosswalls, rarely with true branching, irregularly waved, with more cylindrical young trichomes and young branches, slightly attenuated towards the ends. Cells isodiametric or slightly shorter or longer than wide, without prominent inclusions. Heterocytes intercalary, after false branching often remains at bases of branches, oval or more or less spherical. Old trichomes change often in chroococcoid stages. Akinetes not known. Cell division perpendicular to trichome axis. Reproduction by single cells and by hormogonia, which differentiate at branch ends. Type species grow subaerophytically on wet rocks and walls near Messina (Italy), but poorly known.

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-06 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=47354

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024