Dione W.A.Nelson, 2005
Holotype species: Dione arcuata W.A.Nelson
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.
Precise date of publication26 April 2005
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Yoon, H.S., Nelson, W., Lindstrom, S.C., Boo, S.M., Pueschel, C., Qiu, H. & Bhattacharya, D. (2016). Rhodophyta. In: Handbook of the Protists. (Archibald, J.M, Simpson, A.G.B. & Samovits, C.H. Eds), pp. [1-45]. Cham, Switzerland: Springer International Publishing.
According to Yoon et al. (2016: ) 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. - (6 Feb 2017) - M.D. Guiry
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 6 Feb 2017 by M.D. Guiry.
Numbers of names and species: There is only one species or infraspecific name in the database at present, which has 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.
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: 25 July 2005 by M.D. Guiry
Verified by: 06 February 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=47595
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 April 2019.