Coleodesmium A.Borzì ex L., 1942
Holotype species: Coleodesmium wrangelii Borzì ex Geitler
Original publication and holotype designation: Geitler, L. (1942). Schizophyta: Klasse Schizophyceae. In: Die natürlichen Pflanzenfamilien, Sweite Auflage. (Engler, A. & Prantl, K. Eds) Vol.1b, pp. 1-232. Leipzig: Wilhelm Engelmann.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Komárek, J., Kastovsky, J., Mares, J. & Johansen, J.R. (2014). Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 86: 295-335.
Description: Filamentous; filaments united into intensely branched, mucilaginous, polarized, up to 1 cm high, blue-green or brownish or reddish fascicles; sheaths branched, firm, thin or thick, often lamellated, opened at the apex, colorless or yellow-brown, containing 1 to several trichomes. Trichomes polarized with basal, usually elliptical heterocytes, parallel oriented, falsely branched, cylindrical, uniseriate, constricted at the crosswalls, to the ends not narrowed or only slightly narrowed; false branching initiated at the intercalary heterocytes. Cells shortly barrel-shaped, end cells widely rounded. Aerotopes absent. Akinetes develop rarely near the trichome bases, solitary in short rows. Cell division transverse to the long axis of a trichome. Reproduction by hormogonia, liberated from sheaths; probably formed with the help of necridic cells. Epiphytically on aquatic plants or epilithic on stones in clear, unpolluted creeks, usually in mountain areas. Three species are described from Africa. All taxa need further studies.
Information contributed by: J. Komárek. The most recent alteration to this page was made on 3 Mar 2015 by M.D. Guiry.
Numbers of names and species: There are 8 species names in the database at present, of which 8 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: 03 March 2015 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43617
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 25 January 2020.