Chadefaudiothrix Bourrelly, 1957

Holotype species: Chadefaudiothrix gallica Bourrelly

Original publication and holotype designation: Bourrelly, P. (1957). Un nouveau genre de Xanthophycée d'eau douce de la Foret de Sènart: Chadefaudiothrix. Revue Algologique, Nouvelle Série 3: 97-102.

Description: Multicellular, free living or attached filamentous organisms to 1.5 mm long and 13-35 _m wide. Filaments branched or unbranched, bifurcating or even attached by means of anastomoses. The thallus, straight or curved, with an undulating or even mamillate surface, comprised of a non structured mucilage which can be very ample, and at the centre of which the cells are arranges in one or many rows. Cells isolated in the mucilage, each with its own sheath which can also envelope daughter cells after division, but which disappear afterwards. Cells 9-30 _m long and 2-8 _m wide, ellipsoidal, fusiform or cylindrical rods, slightly curved with rounded apices. Cell walls smooth and firm. Chloroplasts one to four per cell and discoid or ribbon shaped, parietal, yellow green; pyrenoids absent. Asexual reproduction by oblique division of cells. Autospores and zoospores unknown as are cysts. Chadefaudiothrix grows in acidic, stagnant water or in the currents of small streams; known from western Europe and Bolivia. Species distinguished based on the attachment or not of the thallus, cell and filament dimensions, chloroplast number and ecology.

Information contributed by: Y. Thérézien. The most recent alteration to this page was made on 2021-10-07 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 feminine.

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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=45248

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 07 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 30 April 2024