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.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Škaloud, P., Rindi, F., Boedeker, C. & Leliaert, F. (2018). Süßwasserflora von Mitteleuropa. Freshwater flora of central Europe. Bd 13. Chlorophyta: Ulvophyceae (Krienitz, L. ed.). pp. [i]-vii, -288, 182 figs. Berlin: Springer Spektrum.
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 15 Mar 2018 by M.D. Guiry.
Numbers of names and species: There are 4 species names in the database at present, of which 1 has been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..
Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
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Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
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.
Created: 18 August 2004 by M.D. Guiry
Verified by: 15 March 2018 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44541
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 23 March 2019.