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

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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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 2018-10-10 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: 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.

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

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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. 10 October 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 14 July 2024

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