153,600 species and infraspecific names are in the database, 20,980 images, 59,403 bibliographic items, 411,227 distributional records.

Gelidiella Feldmann & G.Hamel, 1934

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Gelidiales
Family Gelidiellaceae

Holotype species: Echinocaulon spinellum Kützing

Currently accepted name for the type species: Gelidiella acerosa (Forsskål) Feldmann & Hamel

Original publication and holotype designation: Feldmann, J. & Hamel, G. (1934). Observations sur quelques Gélidiacées. Revue Générale de Botanique 46: 528-549, 11 figs.
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Taxonomic status: currently recognized as a distinct genus.

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
Substitute name for Echinocaulon Kützing 1843, non (Meisner) Spach 1841. - (30 Aug 2011) - M.D. Guiry

Description: Thallus with prostrate and erect axes, generally forming spreading tufts; some species to 7–10 cm tall, but mostly less than 2 cm, dark red to orange or yellow (often variable within a single thallus), attached by clusters of rhizoids. Erect axes slender, wiry, cartilaginous, cylindrical or slightly compressed, variously branched but distichous when well developed. Apices with a prominent apical cell, but axial filament becoming obscure; medulla of numerous longitudinal filaments and a cortex of 1–3 layers of pigmented ellipsoidal cells. Life history probably triphasic, with isomorphic gametophytes and tetrasporophytes; most species known only with tetrasporangia. Cystocarps reported but not well known. Spermatangia in subterminal sori, cut off from outer cortical cells. Tetrasporangia in swollen often elongate apical portions of axes or short stichidioid branches, irregularly arranged, lying within the inner cortex and outer medulla, tetrahedrally, decussately-cruciately or irregularly divided.

Information contributed by: Huisman, Boo & Boo (2018).. The most recent alteration to this page was made on 26 Sep 2018 by M.D. Guiry.

Numbers of names and species: There are 33 species names in the database at present, as well as 1 infraspecific names. Of the species names, 15 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.

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=32963

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 17 November 2018.

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