159,026 species and infraspecific names are in the database, 22,477 images, 61,673 bibliographic items, 462,211 distributional records.

Rhodothamniella Feldmann, 1978

Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Nemaliophycidae
Order Palmariales
Family Rhodothamniellaceae

Holotype species: Rhodothamniella floridula (Dillwyn) Feldmann

Original publication and holotype designation: Christensen, T. (1978). Annotations to a textbook of phycology. Botanisk Tidsskrift 73: 65-70.

Precise date of publication31 October 1978

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Saunders, G.W., Jackson, C. & Salomaki, E.D. (2017 '2018'). Phylogenetic analyses of transcriptome data resolve familial assignments for genera of the red-algal Acrochaetiales-Palmariales complex (Nemaliophycidae). Molecular Phylogenetics and Evolution 119: 151-159, 2 fig., 3 tables.

Description: Plants uniseriate filamentous, ecorticate. Cells with several parietal lobed discoid chloroplasts with a central pyrenoid each. Life history with heteromorphic generations; gametophytes minuscule, with a unicellular base, tetrasporophyte larger, heterotrichous. Plants dioecious. Male gametophytes producing a single corymbose cluster of much-branched filaments with terminal spermatangia. Carpogonia mostly pedicellate, but distinct carpogonial filament absent. Carposporophytes and carposporangia absent, the fertilized carpogonium giving rise to the tetrasporophyte directly. Fertilized carpogonium dividing transversely, the apical cell producing a prostrate filament, the latter giving rise to many erect filaments. Tetrasporangia borne in small clusters; division of sporangia cruciate. The single species known from several temperate shores in the southern hemisphere and from the European North Atlantic. Epilithic in lower intertidal and sublittoral fringe. Emended by Saunders in Saunders et al. 1995: 608).

Information contributed by: H. Stegenga. The most recent alteration to this page was made on 16 Apr 2018 by M.D. Guiry.

Numbers of names and species: There are 5 species names in the database at present, of which 1 has 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.

Saunders, G.W., Bird, C.J., Ragan, M.A. & Rice, E.L. (1995). Phylogenetic relationships of species of uncertain taxonomic position within the Acrochaetiales-Palmariales complex (Rhodophyta): inferences from phenotypic and 18S rDNA sequence data. Journal of Phycology 31: 601-611, 3 figs, 4 tables.

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: 16 April 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=37298

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 22 September 2020.

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