Cladosiphon Kützing, 1843
Holotype species: Cladosiphon mediterraneus Kützing
Original publication and holotype designation: Kützing, F.T. (1843). Phycologia generalis oder Anatomie, Physiologie und Systemkunde der Tange. Mit 80 farbig gedruckten Tafeln, gezeichnet und gravirt vom Verfasser. pp. [part 1]: [i]-xxxii, -142, [part 2:] 143-458, 1, err.], pls 1-80. Leipzig: F.A. Brockhaus.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156.
Description: Thallus erect, filiform, 10-20 cm high, branched, gelatinous, attached to the substratum, which is usually seagrass, with a minute discoid holdfast. Medulla multiaxial, of elongated unpigmented sympodially branched filaments. Subcortex formed by few-celled, radially extending laterals. Cortex consisting of simple assimilatory filaments 20-40 cells long with basally rectangular, terminally ovoid cells and of phaeophycean hairs. Plurilocular sporangia transformed laterally from upper cells of assimilatory filaments. Unilocular sporangia formed at the base of assimilatory cells. Life history best studied in the economically important Cladosiphon okamuranus (Japanese name: Mozuku). Alternation of heteromorphic generations. Erect thalli are sporophytes that may reproduce directly via spores from plurilocular sporangia. Spores from unilocular sporangia develop into microscopic discoid gametophytes that form isogametes in erect uniseriate gametangia. Chromosome number in C. okamuranus is n=8, 2n=16. In Cladosiphon, germination of zoids is stellate as an adaptation to epiphytic growth.
Information contributed by: A. F. Peters. The most recent alteration to this page was made on 20 Jun 2014 by M.D. Guiry.
Comments: Widely distributed in temperate to tropical seas.
Numbers of names and species: There are 26 species names in the database at present, as well as 1 infraspecific names. Of the species names, 15 have 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):
Click here to also show infraspecific names in the list below.
Sanson, M., Martin, M.J. & Reyes, J. (2006). Vegetative and reproductive morphology of Cladosiphon contortus, C. occidentalis and C. cymodoceae sp. nov. (Ectocarpales, Phaeophyceae) from the Canary Islands. Phycologia 45: 529-545.
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: 28 December 2000 by M.D. Guiry
Verified by: 20 June 2014 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=F281b77046afd71b2
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 27 May 2018.