Bornetia Thuret, 1855

Holotype species: Bornetia secundiflora (J.Agardh) Thuret

Original publication and holotype designation: Thuret, G. (1855). Note sur une nouveau genre d'algues de la famille de Floridées. Mémoires de la Société Impériale des Sciences Naturelles de Cherbourg 3: 155-160, pls I, II.

Description: Thallus subdichotomously to unilaterally branched, ecorticate, cells elongate, large, multinucleate with discoid chromoplasts. Procarps 2(-3) on successive subapical cells of lateral axes with large basal cell and 5-6(-8) smaller cells. Each subapical cell bears pericentral cell usually with a pseudocarpogonium. Supporting cell with terminal sterile cell and lateral 4-celled carpogonial branch. Supporting cell forms auxiliary cell with the sterile cell attached. Fusion cell including supporting cell, axial cell(s) and lower gonimoblast cells, becoming massive and bearing terminal carposporangia. Involucral branches from axial cells below. Spermatangial heads ovoid to elongate, sessile on bifurcate branches of condensed branch systems. Tetrasporangia tetrahedrally-divided, sessile on similar condensed branches.

Information contributed by: E.M. Wollaston. The most recent alteration to this page was made on 2017-02-27 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. II. pp. [2], 763-1504. Thessaloniki: Published and distributed by the author.

Comments: Some features ally Bornetia with Sphondylothamnieae, Spermothamnieae and Griffithsieae. Phylogenetic relationships remain unclear at present.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 27 February 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 23 March 2023

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