Lectotype species: Antithamnionella sarniensis Lyle
Currently accepted name for the type species: Antithamnionella ternifolia (J.D.Hooker & Harvey) Lyle
Original publication:Lyle, L. (1922). Antithamnionella, a new genus of algae. J. Bot. 60: 346-350, 6 figs.
Type designated in Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Athanasiadis, A. (1996). Morphology and classification of the Ceramioideae (Rhodophyta) based on phylogenetic principles. Opera Botanica 127: 1-221.
Type selected by Kylin (1956: 373). - (25 Jan 2017) - M.D. Guiry
Description: Thallus filamentous, ecorticate, with prostrate axes bearing erect branches, the latter with 1– 4 whorl branches on each axial cell; whorl branches themselves branched or unbranched. Vesicular cells usually present, ellipsoidal, lateral on central or proximal cells of whorl branches, covering only the bearing cell, not associated with short specialised branches. Spermatangia on branched fertile branches. Carposporophytes subterminal on indeterminate branches, with lobed or elongate gonimolobes with sequentially maturing carposporangia; growth of bearing axis ceasing on development of the carposporophyte. Involucral filaments absent, but some vegetative branches loosely covering the carposporophyte. Tetrasporangia ellipsoidal or subspherical, sessile or pedicellate, cruciately or tetrahedrally divided.
Information contributed by: Huisman (2018). The most recent alteration to this page was made on 8 Oct 2018 by M.D. Guiry.
Numbers of names and species: There are 38 species names in the database at present, as well as 4 infraspecific names. Of the species names, 27 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.
Choi, H.-G., Kraft, G.T., Kim, H.-S., Guiry, M.D. & Saunders, G.W. (2008). Phylogenetic relationships among lineages of the Ceramiaceae (Ceramiales, Rhodophyta) based on nuclear small subunit rDNA sequence data. Journal of Phycology 44: 1033-1048.
Wynne, M.J. & Schneider, C.W. (2010). Addendum to the synoptic review of red algal genera. Botanica Marina 53: 291-299.
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: 31 December 2000 by M.D. Guiry
Verified by: 25 January 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=33025
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 14 October 2019.