Ctenocladus Borzì, 1883

Holotype species: Ctenocladus circinnatus Borzì

Original publication and holotype designation: Borzì, A. (1883). Studi algologici. Saggio di richerche sulla biologia delle Alghe. Fascicolo I. pp. [i]-vi, [i, h.t.], [i]-i 117, [i, cont.], errata slip, IX pls., uncol. liths. by author. Messina: Gaetano Capra e Co. Editori.

Request PDF

Description: Plants gelatinous and globular, consisting of erect, more or less radiating, uniseriate filaments, with branches arising unilaterally. Cells cylindrical and elongated, each with single nucleus, parietal chloroplast and one to several pyrenoids. Asexual reproduction by zoospores and akinetes. Zoospores biflagellate, micro- and macrozoospores, arising in terminal cells or cells in a series. Quadriflagellate zoospores reported in two undetermined species. Akinetes spherical-subspherical, produced terminally or in rows. Sexual reproduction isogamous with biflagellate gametes. Ctenocladus found principally on higher plants (especially Salicornia) in inland saline environments. Known from North and South America, Europe and Asia. Cell dimensions highly variable and yet form criterion for separation of the 3 or 4 species attributed to genus. Available evidence suggests that Ctenocladus consists of a single very polymorphic species. An ultrastructural investigation of C. circinnatus showed no plasmodesmata, and pyrenoids traversed by membranes.

Information contributed by: D.M. John. The most recent alteration to this page was made on 2022-06-22 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 masculine.

Most recent taxonomic treatment adopted: Darienko, T. & Pröschold, T. (2022). The new photobiont Ctenocladus verrucariae sp. nov. (Ulvales, Ulvophyceae) found in various lichens of the family Verrucariaceae (Eurotiomycetes) . Notulae Algarum 241: 1-10, 4 figs.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44541

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 22 June 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024