Lectotype species: Dispora crucigenioides Printz
Original publication:Printz, H. (1914). Kristianiatraktens Protococcoideer. Skrifter Utgit av Videnskapsselskapet i Kristiania, Matematisk-Naturvidenskabelig Klasse 1913(6): 1-121, pls I-VII.
Taxonomic status: currently recognized as a distinct genus.
Description: Colonies microscopic with 4-32 (-138) cells in homogeneous mucilage; colony typically arranged in flat plane and with cells mostly in distinct diads or tetrads, either separate in mucilage or closely abutting. Cells hemispherical, wedge-shaped, oval or triangular, 4-13 x 7.5 &m. Cells uninucleate; chloroplast single and parietal, without pyrenoids. Colony growth by cell division in two dimensions; asexual reproduction by fragmentation of larger colonies. Sporulation, flagellated stages and sexual reproduction unknown. Dispora widely distributed in freshwater in temperate to tropical conditions. Colonies of Dispora similar to Crucigenia, however, formation of autospores unknown in Dispora. Species distinguished based colony shape and cell arrangement. D. globosa anomalous within genus in that colonies globular rather than planar and cells have a pyrenoid. Komárek and Fott (1983) suggested that this species may be referable to Coenocystis.
Information contributed by: D. Garbary & A. Comas. The most recent alteration to this page was made on 11 Jul 2012 by Michael Guiry.
Numbers of names and species: There are 6 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: 11 April 2002 by M.D. Guiry
Verified by: 11 July 2012 by Michael Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43401
Please cite this record as:
Michael 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 23 January 2019.