Holotype species: Pseudocapsa dubia Ercegovic
Original publication and holotype designation: Ercegovic, A. (1925). Litofitska vegetacija vapnenaca i dolomita u Hrvatskoj. La végétation lithophytes sur les calcaires et les dolomites en Croatie. Acta Botanica Instituti Botanici Universitatis Zabrabensis 10: 64-114.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Komárek, J., Kaštovský, J., Mares, J. & Johansen, J.R. (2014). Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 86: 295-335.
Description: Unicellular-colonial; initial cells spherical, later hemispherical to irregularly rounded-conical, packed into colonies; colonies in a form of 2-16-celled to multicelled packet-like aggregates with tightly, radially and "fan-1ike" oriented cells (with the "conical" part oriented into the center of a colony), enveloped by a thin, colorless, usually firm, tight and sometimes slightly structured (lamellated) gelatinous envelope (the outer layers of which in several species become gelatinous and diffluent). Cells blue-green, pale greyish blue-green or yellowish and olive-green, sometimes with several prominent granules in plasma or with finely granular content. Division of cells in 3 perpendicular planes in successive generations in the beginning, later divide more or less radially in the colony, without the divided cells having grown into the original spherical shape, but growing more or less into the original size. Multiplication by the dissociation of colonies. One of the 4 described species, is known from the subaerophytic localities in calcareous rocks (Europe), one from tropical soils, one from halophilic swamps, and one from the plankton of Caspian sea. Probably more species distributed, but overlooked or misinterpreted with other cyanophytes (Chroococcus, Myxosarcina, Gloeocapsa, etc.).
Information contributed by: J. Komárek. The most recent alteration to this page was made on 5 Mar 2015 by M.D. Guiry.
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: 07 August 2002 by Elizabeth Moran
Verified by: 05 March 2015 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44897
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 24 July 2021.