Doxodasya (F.) , 1901
Holotype species: Doxodasya bolbochaete (Harvey) Falkenberg
Original publication:Falkenberg, P. (1901). Die Rhodomelaceen des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. Fauna und Flora des Golfes von Neapel, Monographie 26. pp. i-xvi, 1-754, 10 figs, 24 pls. Berlin.
Type designated in Womersley, H.B.S. (2003). The marine benthic flora of southern Australia - Part IIID Ceramiales - Delesseriaceae, Sarcomeniaceae, Rhodomelaceae. pp. -533, 226 figs, 2 pls. Canberra & Adelaide: Australian Biological Resources Study & State Herbarium of South Australia.
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: Erect monopodial thalli with radial branching. Axes polysiphonous with 4 pericentrals, cylindrical and corticated; each segment bearing a persistent, pigmented trichoblast; adventitious trichoblast-like filaments may be formed by cortical cells. Trichoblasts or adventitious filaments often become determinate monosiphonous or polysiphonous ramuli that bear spirally arranged trichoblasts. Polysiphonous branches developing from the first proximal lateral on the trichoblast. Procarps borne on 2nd or 3rd segment of unbranched trichoblasts on polysiphonous ramuli; a 4-celled carpogongia branch and a single group of sterile cells is attached to the supporting cell. Cystocarps spheroid and with multilayers of cells. Spermatangial capitula formed on trichoblasts of ramuli, an intercalary region of the monosiphonous filament producing pericentrals and pseudopericentrals that develop an external layer of fertile male cells. Tetrasporangia borne in decussate pairs in stichidia that have a few reduced or no trichoblasts; stichidia developed from polysiphonous or monosiphonous filaments, tetrasporangia produced on the 2nd and 3rd pericentrals, 2 presporangial and 1 postsporangial cover cell.
Information contributed by: R.E. Norris. The most recent alteration to this page was made on 6 Oct 2010 by M.D. Guiry.
Comments: Subtidal, Western Australia and all of southern Australian coast, including Tasmania. Doxodasya distinguished from closely allied genera (Lophothalia, Haplodasya, and Gonatogenia) by number of pericentrals and character of trichoblasts.
Numbers of names and species: There are 4 species names in the database at present, of which 4 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: 28 December 2000 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=40631
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 16 January 2021.