153,585 species and infraspecific names are in the database, 20,980 images, 59,387 bibliographic items, 411,011 distributional records.

Amphiroa J.V.Lamouroux, 1812

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Corallinophycidae
Order Corallinales
Family Lithophyllaceae
Subfamily Lithophylloideae
Tribe Amphiroeae

Lectotype species: Amphiroa tribulus (J.Ellis & Solander) J.V.Lamouroux

Original publication:Lamouroux, [J.V.F.] (1812). Extrait d'un mémoire sur la classification des Polypiers coralligènes non entièrement pierreux. Nouveaux Bulletin des Sciences, par la Société Philomathique de Paris 3: 181-188.
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Type designated in Hamel, G. & Lemoine, Mme P. [=M.] (1953). Corallinacées de France et d'Afrique du Nord. Archives du Museum National d'Histoire Naturelle (Paris), série 7 1: 15-136.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.

Nomenclatural notes
Woelkerling & Harvey (2012: 119) note that effective lectotypification of the genus was made by Hamel & Lemoine (1953: 40), who designated A. tribulus as the type species. This lectotype is supported by their designation of a lectotype and epitype of Corallina tribulus. - (2 Mar 2012) - Wendy Guiry

Description: Thallus usually erect, occasionally entangled or repent; branches of alternating decalcified genicula and calcified intergenicula, branching variously dichotomous, trichotomous, irregular or clustered (some species with adventitious branches); branch segments terete to compressed or flattened. Structure pseudoparenchymatous, strictly monomerous, with a central filamentous core composed of arching tiers of cells and a more peripheral region where core filaments or their derivatives curve outwards and terminate in epithallial cells at the thallus surface. Cells of adjacent filaments linked by secondary pit connections; cell fusions absent. Gametangia and sporangia formed in uniporate conceptacles situated on conceptacle chamber floors. Spermatangia, where known, terminating short unbranched filaments. Carpogonial branches, where known, 2-celled. Carposporophytes, where known, formed in female conceptacles after fertilisation, consisting of a central fusion cell and short filaments with terminal carposporangia. Tetrasporangia/bisporangia with zonately arranged spores; sporangia formed peripheral to or interspersed among sterile often degenerate filaments that originally contributed to conceptacle roof formation. or form a central columella. Life history with isomorphic gametophytes and tetrasporophytes.

Information contributed by: R.A. Townsend & J.M. Huisman (2018).. The most recent alteration to this page was made on 25 Sep 2018 by M.D. Guiry.

Comments: Amphiroa is a large genus widespread in tropical and subtropical regions with a variety of morphological types from a few millimeters high to as much as 30 cm. Intergenicula may be terete or flat, and sometimes have midribs and wings. Studies in Belize reveal that fronds are protected from herbivory (by fishes) near sea fans (Gorgonia), fire coral colonies (Millepora), and the herbivore-resistant brown algae Stypopodium.

Named for Amphiro, one of the Océanides (nymphs of the sea, daughters of Oceanus and Tethys), mentioned by Ancient Greek poet Hesiod in his epic poem Theogony, which presents a genealogy of the Greek gods [“Océanide suivant Hésiode” fide J.V.Lamouroux, Hist. Polyp. Corall. 294 (1816)].

Numbers of names and species: There are 186 species names in the database at present, as well as 44 infraspecific names. Of the species names, 56 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.

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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: 01 January 2001 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=33227

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 15 November 2018.

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