Geitlerinema (Anagnostidis & Komárek) Anagnostidis, 1989
Holotype species: Geitlerinema splendidum (Greville ex Gomont) Anagnostidis
Original publication and holotype designation: Anagnostidis, K. (1989). Geitlerinema, a new genus of oscillatorialean cyanophytes. Plant Systematics and Evolution 164: 33-46, 4 figs, 1 table.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Strunecky, O., Bohunická, M., Johansen, J.R., Capková, K., Raabová, L., Dvorák, P. & Komárek, J., (2017). A revision of the genus Geitlerinema and a description of the genus Anagnostidinema gen. nov. (Oscillatoriophycidae, Cyanobacteria). Fottea, Olomouc 17(1): 114-126, 4 figs.
Description: Thallus thin, delicate, mostly bright blue–green, diffluent, sometimes fascicle–like, usually forming thin mats; occasionally isolated trichomes. Sheaths absent. Trichomes ± parallel–arranged, cylindrical, straight, slightly flexuous, not constricted at the cross–walls, bent and spherically capitate at the ends, motile, with intense gliding in the direction of the longitudinal axis, sometimes accompanied by a distinctive rotation, 1.5–3 µm wide. Cells rarely short, up to 2–4(6) × longer than wide, 3.5–8 µm long, pale grayish, blue–green or bright blue–green, without evident chromatoplasma or centroplasma, sometimes with translucent cyanophycin granules at the cross–walls, without aerotopes. Apical cells in developed trichomes bent or/and apparently spherical–capitate. Thylakoids concentrically arranged, peripheral and more or less parallel to the longitudinal cell walls, forming a wavy concentric inner cylinder. Centroplasma includes droplets of polyphosphates, starch and carboxysomes (Fig. 3, A–D). The main diacritic features are trichomes lacking sheaths and particularly the morphology of the end cells that are bent, sphe-rically capitate, and elongated up to 15 µm when mature. Reproduction by disintegration of trichomes into motile hormogonia, without necridic cells.
Information contributed by: Strunecky <i>et al.</i> 2017. The most recent alteration to this page was made on 30 Mar 2017 by M.D. Guiry.
Numbers of names and species: There are 37 species names in the database at present, as well as 3 infraspecific names. Of the species names, 25 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: 23 April 2002 by M.D. Guiry
Verified by: 30 March 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44059
Please cite this record as:
M.D. 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 26 March 2019.