Granulocystis Hindák, 1977
Holotype species: Granulocystis verrucosa (J.V.Roll) Hindák
Original publication and holotype designation: Hindák, F. (1977). Studies on the chlorococcal algae (Chlorophyceae). I. Biologicke Práce 23: 1-192.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Trebouxiophyceae. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 61-108. Ruggell: A.R.A. Gantner Verlag K.-G..
Description: Cells solitary or in 2-4-8-(?16)-celled colonies enclosed within the expanded mother cell wall which exhibits the granulation characteristic of the species or, occasionally, enclosed within a structureless mucilaginous envelope to 60 µm diameter. Cells oval, fusiform or cylindrical, 5.5-16.5 x 2.5-11.2 µm. Cell wall with granules or spines over the entire surface, the granules at the poles sometimes adjoined. Chloroplast single, parietal, with single pyrenoid. Asexual reproduction by 2-4-8-(?16) autospores retained for some time within the expanded mother cell wall but ultimately released by rupture or mucilaginization of the mother cell wall. Sexual reproduction and flagellated stages unknown. Granulocystis, planktonic or benthic, reported from freshwater in Czechoslovakia, Hungary, Ukraine and India (?). Similar to Granulocystopsis Hindák which, however, has the surface granulations only at the apices and equatorial region of the cell.
Information contributed by: G. Dillard & D. Garbary. The most recent alteration to this page was made on 20 Dec 2011 by M.D. Guiry.
Numbers of names and species: There are 6 species names in the database at present, of which 6 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):
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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: 27 September 2004 by Robert Wilkes
Verified by: 20 December 2011 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=47423
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 23 October 2021.