Grateloupia C.Agardh, 1822, nom. cons.

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 √úbersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.

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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 2022-04-06 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

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.

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

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

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Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 April 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 23 May 2024

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