Chloromeson Pascher, 1930
Holotype species: Chloromeson agile Pascher
Original publication and holotype designation: Pascher, A. (1930). Zur Kenntnis der heterokonten Algen. Archiv für Protistenkunde 69: 401-451.
Request PDFDescription: Unicellular, solitary organisms, free-living and motile, 5-13 _m long and 4-10 _m wide. Cells ovoid, ellipsoid to nearly circular in face view with the posterior portion rounded; in profile cells slightly elliptic to biconvex but always flattened. Cells with amoeboid movement and high metaboly. The two flagella inserted at the anterior apex, in two species in a flagellar crypt. The largest flagellum up to six times as long as the cell; the smaller mostly shorter than the cell length and often highly reduced. Chloroplast single per cell, yellow green, central, lamellate or ribbon-like, sometimes creased or folded on itself. Stigma present in two species. Pyrenoids absent. Storage products comprised of lipid granules and oil. Asexual reproduction by longitudinal division. Endogenous cysts reported with thick, ornamented cell wall sometimes brown in color and comprised of two valves. Chloromeson in more or less brackish water of pools and ditches and on muddy soil; reported only from central and western Europe. . luteo-viridis and not C. viride (as described by Ettl and Chrétiennot-Dinet) was described from the banks of Lilloo in Belgium by Conrad. This species, with its general appearance, two flagella and cysts, seems to fit well in Chloromeson, although its placement here was doubted by Ettl (1978). Species distinguished based on the cell and flagellar dimensions, the form of the cell and the anterior apex, cyst morphology and presence or absence of a stigma.
Information contributed by: A. Couté & C. Cardinal-Legrand. The most recent alteration to this page was made on 2021-10-03 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Gender: This genus name is currently treated as neuter.
Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.
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Contributors
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.
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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 03 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 25 April 2024
