Dione W.A.Nelson, 2005
Holotype species: Dione arcuata W.A.Nelson
Publication details: W.A.Nelson, 2005: 142-143
Original publication and holotype designation: Nelson, W.A., Farr, T.J. & Broom, J.E.S. (2005). Dione and Minerva, two new genera from New Zealand circumscribed for basal taxa in the Bangiales (Rhodophyta). Phycologia 44: 139-145.
Request PDFPrecise date of publication: 26 April 2005
Description: Filaments are broad, coarse, curved and unbranched, up to 1.5 cm long; they are attached to rocky substrate in shaded parts of the upper subtidal zone by rhizoids extending from paired lower cells of the filament within a common outer wall. The filaments are uniseriate and 47-60 microns wide immediately above the rhizoidal area, but widening and becoming multiseriate and up to 80 microns broad distally. Fertile filaments have male and female regions either mixed or singly. Spermatangial regions are 115-150 microns wide, whereas presumed zygotosporangial regions are 120-210 microns wide. Archeospores are produced in the upper part of the filament. Spores of most filaments develop directly into new filaments; the conchocelis phase is rare.
The most recent alteration to this page was made on 2025-06-20 by M.D. Guiry.Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Most recent taxonomic treatment adopted: Li, Y.-L., Wang, J., Pu, J.-Q., Hu, C.-M., Zhou, W., Brodie, J. & Yang, L.-E. (2025). History and advances in the taxonomy of the Bangiaceae (Rhodophyta) and new evidence to support splitting the genus Pyropia. European Journal of Phycology 60: [1–18], 3 figures, 3 tables.
Taxonomic note
According to Yoon et al. (2016: [31]) and most previous authors, "The class Bangiophyceae includes one order Bangiales, one family Bangiaceae, and 12 currently recognized genera with ca. 130 species." By contrast, Athansiadis (2016: 38) refers all these genera, except Bangia which remains in the Bangiaceae, Bangiales, to the Porphyraceae, which he refers to the Porphyrales. - (06 February 2017) - M.D. Guiry
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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.
Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=47595
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 20 June 2025. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 11 July 2025
