Rhodothamniella Feldmann in T. Christensen, 1978: 67
Classification:
Empire Eukaryota
Kingdom Plantae
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.
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).
NCBI Nucleotide Sequences
Numbers of names and species: There are 5 species (and infraspecific) names in the database at present, of which 1 has 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):
Rhodothamniella caespitosa (J.Agardh) Feldmann S
Rhodothamniella codicola (Børgesen) C.Bidoux & F.Magne S
Rhodothamniella codii (Hamel) Feldmann S
Rhodothamniella floridula (Dillwyn) Feldmann C - type
Rhodothamniella rhizoidea (K.M.Drew) C.Bidoux & F.Magne S
References
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.
Contributors
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=37298
Citing AlgaeBase
Cite this record as:
Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 22 May 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:8042
