Celloniella Pascher, 1929

Holotype species: Celloniella palensis Pascher

Original publication and holotype designation: Pascher, A. (1929). Über die Beziehungen zwischen Lagerform und Standortsverhältnissen bei einer Gallertalge (Chrysocapsale). Archiv für Protistenkunde 68: 637-668.

Description: Cells globular, arranged in a gelatinous extended thallus which is bush- or bladder-like or covers stones and other objects. Cells wall-less, have 2 chloroplasts, with or without pyrenoid, contractile vacuoles, several(-8) dictyosomes, and chrysolaminaran vesicles. Some cells possess a long gelatinous posterior filament. Vegetative cells are directly transformed into swarmers, tetrahedral in shape. Each has 2 flagella, but the long flagellum has apparently no hairs, and the short flagellum is reduced to a bulbous stump, with reduced axonemal tubules. The flagellar root system is of complicated, asymmetric construction. There is a rhizoplast, but the microtubular root system is dominating and massively developed; it is responsible for maintaining the shape of the swarmers. Also the swarmer has several(-8) dictyosomes. There is no photoreceptor system. The structure of the swarmers and stomatocysts indicates a close relationship with Hydrurus. Found in cold streams, growing on stones or plants, in various places in Europe.

Information contributed by: J. Kristiansen. The most recent alteration to this page was made on 2021-10-19 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.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43775

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 19 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024