Rhodochorton Nägeli, 1862 '1861', nom. et typ. cons.
Lectotype species: Rhodochorton purpureum (Lightfoot) Rosenvinge
Original publication:Nägeli, C. (1862 '1861'). Beiträge zur morphologie und systematik der Ceramiaceae. Sitzungsberichte der Königlichen Bayerischen Akademie der Wissenschaften zu München 1861(2): 297-415, 30 figs, 1 pl.
Type designated in Schmitz, F. (1889). Systematische Übersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.
Taxonomic status: currently recognized as a distinct genus.
Gender: This genus name is currently treated as neuter.
Most recent taxonomic treatment adopted: Harper, J.T. & Saunders, G.W. (2002). A re-classification of the Acrochaetiales based on molecular and morphological data, and establishment of the Colaconematales, ord. nov.. British Phycological Journal 37: 463-475.
Type has been conserved. - (20 Jan 2017) - M.D. Guiry
Harper & Saunders (2002) circumscribed Rhodochorton for marine species lacking monosporangia and stellate chloroplasts. - (5 Oct 2010) - M.D. Guiry
Description: Plants uniseriate filamentous, heterotrichous. Cells with one to many parietal chloroplasts, without pyrenoids. Life histories characterized by the absence of free carpospores, the tetrasporangium-bearing phase being produced directly from the fertilized carpogonium; morphologically distinct gonimoblasts present or absent; tetrasporophyte the dominant generation or reduced to a carpotetrasporophyte. Spermatangia in corymbose clusters or single/terminal. Carpogonia sessile or pedicellate, distinct carpogonial filament absent. Fertilized carpogonium divided by a transverse wall, both resulting cells giving rise to (reduced) gonimoblasts. Gonimoblasts forming tetrasporangia terminally or producing a multicellular tetrasporophyte. Tetrasporangia cruciately divided. Emended by J.T. Harper & G.W. Saunders (2002: 471).
Information contributed by: H. Stegenga. The most recent alteration to this page was made on 5 Nov 2019 by Wendy Guiry.
Comments: The type is a widespread epilithic species in the intertidal of temperate areas; the only other species with well documented life history (R. subimmersum Setchell and Gardner), a semi-endophyte from the northern Pacific.
Numbers of names and species: There are 110 species names in the database at present, as well as 15 infraspecific names. Of the species names, 8 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.
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.
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.
Schneider, C.W. & Wynne, M.J. (2019). Fourth addendum to the synoptic review of red algal genera. Botanica Marina 62(4): 355-367 [1-13].
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: 29 December 2000 by M.D. Guiry
Verified by: 20 January 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=6
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 19 January 2020.