Gymnothamnion J.Agardh, 1892
Holotype species: Gymnothamnion elegans (Schousboe ex C.Agardh) J.Agardh
Original publication and holotype designation: Agardh, J.G. (1892). Analecta algologica. Lunds Universitets ÅrsSkrift, Andra Afdelningen, Kongl. Fysiografiska Sällskapets i Lund Handlingar 28(6): 1-182, 3 pls.
Description: Thallus prostrate and erect, branching opposite-distichous with irregular short and long branchlets, axes ecorticate, apical cell transversely divided. Cells uninucleate. Procarps subterminal on lateral branches, carpogonial branch 4-celled. Auxiliary cell, cut off from supporting cell leading to carposporophyte with irregularly elongate groups of carposporangia. Involucre lacking. Spermatangia in corymbose heads. Tetrasporangia single, terminal on branchlets, tetrahedrally divided.
Information contributed by: E.M. Wollaston. The most recent alteration to this page was made on 2017-01-24 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.
Comments: Relationships uncertain, affinities with Ptiloteae and Antithamnieae noted (vide Kajimura 1989). Not common, but widespread including Mediterranean, Atlantic ocean, Japan, usually in warm seas often on rock and corals protected from exposure.
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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=33299
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 24 January 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 09 February 2023