161,834 species and infraspecific names are in the database, 22,723 images, 63,709 bibliographic items, 473,729 distributional records.

Grateloupia C.Agardh, 1822, nom. cons.

Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Halymeniales
Family Halymeniaceae

Lectotype species: Grateloupia filicina (J.V.Lamouroux) C.Agardh

Original publication:Agardh, C.A. (1822). Species algarum rite cognitae, cum synonymis, differentiis specificis et descriptionibus succinctis. Volumen primum pars posterior. pp. [v-vi], 169-398. Lundae [Lund]: ex officina Berlingiana.
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Type designated in Schmitz, F. (1889). Systematische Übersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.
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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: 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.

Nomenclatural notes
Grateloupia C.Agardh, 1822 (Nov.) is lectotypified by G. filicina and is currently a member of the Halymeniaceae; Grateloupia Bonnemaison, 1822 (April) is typified by Conferva arbuscula, now considered a synonym of Aglaothamnion sepositium, currently a member of the Ceramiaceae. Grateloupia C.Agardh, however, is a conserved name and is thus conserved against all earlier homonyms. When conservation was effected, the type was also conserved. - (18 May 2014) - M.D. Guiry

Description: Compressed to foliose, linear to lanceolate, rarely unbranched, usually branched proliferously, to one or more orders, in one or more planes. Stipitate. Holdfast a basal disc. Lubricous to leathery. Medulla filamentous, with rhizoids. Inner cortex of anastomosing stellate cells, outer cortex of anticlinal files of more or less isodiametric cells, progressively smaller toward cuticle. Female reproductive structures in ampullae, sparingly branched usually to only two orders. Carpogonia terminating a 2-celled branch on the primary ampullar filament. Connecting filaments can fuse with a succession of auxiliary cells in separate ampullae. A single, outwardly directed gonimoblast initial produces a compact, embedded cystocarp with many small carposporangia. Small auxiliary fusion cell formed. Carpostome usually present. Spermatangia superficial, sometimes in nemathecial sori. Tetrasporophyte isomorphic. Tetrasporangia cruciate, attached subbasally to intermediate cortical layer.

Information contributed by: S.C. Lindstrom & J.A. Lewis. The most recent alteration to this page was made on 24 Jan 2017 by M.D. Guiry.

Comments: Distributed in warm temperate (to tropical) waters throughout the world.

Common names

(as Grateloupia)
Japanese: Tamba-nori (Chapman & Chapman 1980).

Portuguese: Ratanho (Oliveira, 1990).

Numbers of names and species: There are 154 species names in the database at present, as well as 32 infraspecific names. Of the species names, 97 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.

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: 24 January 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=114

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 22 June 2021.

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