Osmundaria J.V., 1813
Holotype species: Osmundaria prolifera J.V.Lamouroux
Original publication and holotype designation: Lamouroux, J.V.F. (1813). Essai sur les genres de la famille des Thalassiophytes non articulées. Annales du Muséum d'Histoire Naturelle, Paris 20: 21-47, 115-139, 267-293, pls 7-13.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.
Description: Thalli ligulate, up to 50 cm long, 1 cm broad, branched from margins or midrib, with characters similar to those of Vidalia but with blade surfaces often densely covered on both sides by adventitious branchlets which are branched and up to ~1 mm long. Tetrasporangial stichidia on cylindrical branchlets occurring on edges of distal serrations; 2 sporangia per segment forming 2 rows in the stichidium which is somewhat flattened, curved distally and dorsiventrally oriented sometimes with dorsal trichoblasts or scar cells.
Information contributed by: R.E. Norris. The most recent alteration to this page was made on 7 Oct 2010 by M.D. Guiry.
Comments: Subtidal in southern and Western Australia. Analyses of species of Vidalia compared with Osmundaria strongly suggest that the two genera should not remain separate.
Numbers of names and species: There are 12 species names in the database at present, as well as 1 infraspecific names. Of the species names, 7 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.
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: 01 January 2001 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42517
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 23 September 2019.