149,967 species and infraspecific names are in the database, 20,386 images, 57,648 bibliographic items, 380,221 distributional records.

Erythrotrichia Areschoug, 1850, nom. cons.

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Proteorhodophytina
Class Compsopogonophyceae
Order Erythropeltales
Family Erythrotrichiaceae

Holotype species: Erythrotrichia ceramicola (Lyngbye) Areschoug

Currently accepted name for the type species: Erythrotrichia carnea (Dillwyn) J.Agardh

Original publication and holotype designation: Areschoug, J.E. (1850). Phycearum, quae in maribus Scandinaviae crescunt, enumeratio. Sectio posterio Ulvaceas continen. Nova Acta Regiae Societatis Scientiarum Upsaliensis 14: 385-454, 3 pls.
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Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. I. pp. [i]-xxxxviii, 1-762. Thessaloniki: Published and distributed by the author.

Description: Thalli may be uniseriate, multiseriate or slightly foliose, to several mm in height. Each cell with a single, stellate chloroplast with central pyrenoid. Contains B-Type II phycoerythrin. Pit plugs absent. Growth may be apical in the early developmental stages, but soon becomes intercalary or diffuse. One or more of the basal cells produce rhizoidal outgrowths. Asexual reproduction via monospores. An oblique cytokinesis cleaves a vegetative cell into two unequal sized cells, the smaller of which becomes the monosporangium. In situ germination of monospores to form lateral branches has been reported. Sexual reproduction has been documented. Gametophytes are tricellular, the apical cell of which produces a spermatangium by an oblique division, and a single spermatium is released. Following spermatium release the remaining apical cell contents differentiate into a carpogonium that a spermatium will contact and fuse with. Following fertilization the zygote germinates in situ and forms a linear series of diploid cells on the gametophyte. These diploid cells eventually form monosporangia and release single monospores. Meiosis is thought to be somatic, occuring at the time of monospore germination. Growing epiphytically on other algae or seagrass.

Information contributed by: M. Hawkes. The most recent alteration to this page was made on 19 Jan 2017 by M.D. Guiry.

Comments: Widely distributed, however, many of the taxa referred to this genus require further investigation. Given the simple morphology and presumed antiquity of these rhodophytes it is highly likely that the species currently placed in Erythrotrichia are not congeneric.

Numbers of names and species: There are 44 species names in the database at present, of which 31 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):

Erythrotrichia arachnoidea Areschoug S 
Erythrotrichia ascendens E.Y.Dawson C 
Erythrotrichia bangioides Levring C 
Erythrotrichia bertholdii Batters C 
Erythrotrichia biseriata Tanaka C 
Erythrotrichia boryana (Montagne) Berthold S 
Erythrotrichia carnea (Dillwyn) J.Agardh C 
Erythrotrichia ceramicola (Lyngbye) Areschoug S - type
Erythrotrichia ciliaris (Carmichael) Thuret S 
Erythrotrichia discigera Berthold S 
Erythrotrichia elongata Lami C 
Erythrotrichia filibasalis Noda S 
Erythrotrichia foliiformis G.R.South & N.M.Adams C 
Erythrotrichia hunterae N.L.Gardner C 
Erythrotrichia incrassata T.Tanaka C 
Erythrotrichia investiens (Zanardini) Bornet C 
Erythrotrichia japonica Tokida S 
Erythrotrichia kylinii N.L.Gardner C 
Erythrotrichia ligulata Womersley S 
Erythrotrichia longistipitata J.A.West, Loiseaux de Goër & Zuccarello C 
Erythrotrichia minuta B.F.Zheng & J.Li C 
Erythrotrichia nigrescens P.J.L.Dangeard S 
Erythrotrichia obscura Berthold S 
Erythrotrichia parietalis T.Tanaka C 
Erythrotrichia parksii N.L.Gardner C 
Erythrotrichia platyphylla Stegenga, Engledow, Bolton & Anderson C 
Erythrotrichia polymorpha M.Howe C 
Erythrotrichia porphyroides N.L.Gardner C 
Erythrotrichia propagulosa B.F.Zheng & J.Li C 
Erythrotrichia pseudopulvinata P.J.L.Dangeard S 
Erythrotrichia pulvinata N.L.Gardner S 
Erythrotrichia ramulosa B.F.Zheng & J.Li C 
Erythrotrichia reflexa (P.Crouan & H.Crouan) Thuret ex De Toni C 
Erythrotrichia regularis Noda C 
Erythrotrichia rhizoidea Cleland C 
Erythrotrichia rosea P.J.L.Dangeard C 
Erythrotrichia sargassicola Noda C 
Erythrotrichia scalaris P.J.L.Dangeard C 
Erythrotrichia simplex P.J.L.Dangeard C 
Erythrotrichia simplex B.F.Zheng & J.Li C 
Erythrotrichia tetraseriata N.L.Gardner C 
Erythrotrichia tristanensis Baardseth S 
Erythrotrichia vexillaris (Montagne) Hamel C 
Erythrotrichia welwitschii (Ruprecht) Batters C 

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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.

Created: 28 December 2000 by M.D. Guiry

Verified by: 19 January 2017 by M.D. Guiry

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Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 23 November 2017.

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