163,770 species and infraspecific names are in the database, 22,783 images, 63,043 bibliographic items, 481,350 distributional records.

Vidalia J.V.Lamouroux ex J.Agardh, 1863, nom. cons.

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Ceramiales
Family Rhodomelaceae
Tribe Amansieae

Lectotype species: Vidalia spiralis (J.V.Lamouroux) J.V.Lamouroux ex J.Agardh

Original publication:Agardh, J.G. (1863). Species genera et ordines algarum, seu descriptiones succinctae specierum, generum et ordinum, quibus algarum regnum constituitur. Volumen secundum: algas florideas complectens. Part 2, fasc. 3. pp. 787-1138, 1158-1291. Lundae [Lund]: C.W.K. Gleerup. [in Latin]
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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: Womersley, H.B.S. (2003). The marine benthic flora of southern Australia - Part IIID Ceramiales - Delesseriaceae, Sarcomeniaceae, Rhodomelaceae. pp. [1]-533, 226 figs, 2 pls. Canberra & Adelaide: Australian Biological Resources Study & State Herbarium of South Australia.

Description: Thallus erect, loriform, the blades faintly veined and with regularly spaced marginal serrations formed from endogenous branches. Indeterminate branches arising from blade margins, occasionally also with proliferous branches growing from the blade surface. Serrations with serrulations forming in an abaxial row. Structure uniaxial; central axes ringed by 5 pericentral cells and 2 dorsal pseudopericentral cells (occasionally also a third pseudopericentral on the ventral side). Lateral alae formed from pericentral cells, with a central medulla 2 cells thick and a cortex of 1–several cell layers. Trichoblasts occasionally formed on the dorsal surface near branch apices, but these soon deciduous and leaving scar cells. Reproductive structures arising on branchlets borne on the thallus margin or surface. Spermatangial branches replacing trichoblasts. Procarps borne on the dorsal side of adventitious branchlets on polysiphonous axes that replace trichoblasts. Cystocarps globose, with a thick pericarp and sterile gonimoblast filaments growing from the fusion cell and forming cell rows on the inside percarp wall. Tetrasporangia formed in stichidia, in 2 rows, tetrahedrally divided.

Information contributed by: Huisman (2018). The most recent alteration to this page was made on 10 Oct 2018 by M.D. Guiry.

Comments: In warm temperate to tropical shores of most regions, particularly in the Indo-Pacific.

Numbers of names and species: There are 14 species names in the database at present, as well as 1 infraspecific names. Of the species names, 3 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: 28 December 2000 by M.D. Guiry

Verified by: 26 January 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=33333

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 16 October 2021.

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