Cladosiphon Kützing, 1843: 329
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.
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.
Comments: Widely distributed in temperate to tropical seas.
NCBI Nucleotide Sequences
Numbers of names and species: There are 26 species (and infraspecific) names in the database at present, of which 13 have been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently 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):
Cladosiphon balticus Gobi S
Cladosiphon chordaria var. dictyosiphon Harvey S
Cladosiphon chordaria Harvey S
Cladosiphon chordariiformis (P.L.Crouan & H.M.Crouan) J.Agardh S
Cladosiphon contortus (Thuret) Kylin C
Cladosiphon cylindricus (Sauvageau) Kylin C
Cladosiphon cymodoceae Sanson, Martin & Reyes C
Cladosiphon decipiens (Suringar) Okamura S
Cladosiphon erythraeus J.Agardh S
Cladosiphon filum (Harvey) Kylin C
Cladosiphon floridanus W.R.Taylor S
Cladosiphon frappieri Montagne & Millardet S
Cladosiphon giraudyi J.Agardh S
Cladosiphon irregularis (Sauvageau) Kylin C
Cladosiphon lubricus (Sauvageau) Kylin C
Cladosiphon mauritianus Børgesen C
Cladosiphon mediterraneus Kützing C - type
Cladosiphon nigrescens Harvey ex Kützing S
Cladosiphon nigricans Harvey S
Cladosiphon novae-caledoniae Kylin C
Cladosiphon occidentalis Kylin C
Cladosiphon okamuranus Tokida C
Cladosiphon umezakii Ajisaka C
Cladosiphon vermicularis (J.Agardh) Kylin C
Cladosiphon zosterae (J.Agardh) Kylin C
Cladosiphon zostericola Harvey ex Kützing S
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: http://www.algaebase.org/search/genus/detail/?genus_id=32915
Cite this record as:
Michael Guiry in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 11 December 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:8307