Antithamnion Nägeli, 1847
Holotype species: Antithamnion cruciatum (C.Agardh) Nägeli
Original publication and holotype designation: Nägeli, C. (1847). Die neuern Algensysteme und Versuch zur Begründung eines eigenen Systems der Algen und Florideen. Neue Denkschriften der Allgemeinen Schweizerischen Gesellschaft für die Gesammten 9(2): 1-275, pls I-X.
Description: Thallus filamentous, with prostrate and erect axes, ecorticate. Determinate lateral branches (whorl branches) 2 per axial cell, generally opposite and distichous, occasionally decussate; whorl branches with basal cell smaller than distal cells, undivided or variously branched; vesicular cells on 2–4 (–6)-celled pinnules. Spermatangia in heads. Carposporophytes with an involucre of modified vegetative filaments. Tetrasporangia cruciately divided.
Information contributed by: Huisman (2018). The most recent alteration to this page was made on 2018-10-08 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 neuter.
Most recent taxonomic treatment adopted: Athanasiadis, A. (1996). Morphology and classification of the Ceramioideae (Rhodophyta) based on phylogenetic principles. Opera Botanica 128: -216, 108 figs.
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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=33023
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 October 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 02 October 2023