Characiochloris Pascher, 1927
Lectotype species: Characiochloris characioides Pascher
Original publication:Pascher, A. (1927). Volvocales = Phytomonadinae. In: Die Süsswasser-Flora Deutschlands, Österreichs und der Schweiz. Heft 4. (Pascher, A. Eds), pp. 20-505. Jena:
Taxonomic status: currently recognized as a distinct genus.
Gender: This genus name is currently treated as feminine.
Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Chlorococcales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 232-264. Ruggell: A.R.A. Gantner Verlag K.-G..
Description: Solitary, oval, ellipsoid, spindle to fusiform shaped cells attached to substratum with mucilaginous pad; short, narrow stipe present or absent. Basal pad often becoming dark with impregnation of iron, at least one species with vestigial flagella projecting into base. Cells 12-70 (-120) x 6-35 &m, broadly rounded to apiculate at upper end; C. sasae with papilla-like distal end. Cell walls smooth, more or less prominent, sometimes with thin mucilaginous envelope and occasionally with thickened upper end. Cells uninucleate with contractile vacuoles; chloroplast parietal and band shaped to lobed and net like, with 1-6 pyrenoids, usually with prominent starch sheaths, and sometimes with one stigma. Asexual reproduction by biflagellate zoospores; 4-128 per sporangium. Zoospores 8-20 x 3.5-10 &m, with band shaped chloroplast, single pyrenoid, stigma and contractile vacuoles. Zoospores attach by anterior end. Aplanospores observed in C. obtusa, C. apiculata,and C. sasae. In C. sasae aplanospores smooth-walled and spherical, 12-25 &m diameter and reddish-brown at maturity; ususally single per vegetative cell but 2-8 sometimes develop. During germination aplanospores produce 4(8-16) biflagellate germ cells in a vesicle, partially extruded from spore. Swarmers ca 12 µm long and reddish-brown, without apparent stigmata, pyrenoids or contractile vacuoles. Swarmers attach and develop as in typical vegetative cells. Sexual reproduction unknown. Characiochloris epiphytic on various freshwater algae and from soil; reported from Europe, Africa and Asia although most species with highly localized known distributions. Species previously assigned to Characiochloris currently placed in Chlorangopsis and Chlamydomonadopsis. With Chlamydopodium comprise only genera in Characiochloridaceae. Species distinguished based on differences in cell size and shape, pyrenoid number, and details of chloroplast morphology
Information contributed by: D. Garbary. The most recent alteration to this page was made on 9 Nov 2017 by M.D. Guiry.
Numbers of names and species: There are 20 species names in the database at present, of which 14 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: 23 April 2002 by M.D. Guiry
Verified by: 09 November 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44246
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 19 June 2019.