Apedinella Throndsen, 1971

Holotype species: Apedinella spinifera (Throndsen) Throndsen

Currently accepted name for the type species: Apedinella radians (Lohmann) P.H.Campbell

Original publication and holotype designation: Throndsen, J. (1971). Apedinella gen. nov. and the fine sructure of A. spinifera (Throndsen) comb. nov.. Norwegian Journal of Botany 18: 47-64.

Description: Cells solitary, free-swimming, with a single, apical flagellum pointing forward. Flagellum has a wing with a paraxial rod and bears a single row of tubular hairs ("flimmer"). Cell shape rounded truncate, with radial symmetry. Anterior end with a central depression from which flagellum emerges; posterior end rounded. Six (8-l0) elongated, yellowish brown chloroplasts each with an embedded pyrenoid are located concentrically around the median nucleus. The cell surface is covered by delicate, organic scales which give cellulose reaction. The characteristic cell shape, the protruding spiny scales and lack of a trailing pseudopodium are salient features for identification. Easily recognized in phase contrast microscopy, the emanating spiny scales being conspicuous even without staining. Nutrition phototrophic. Asexual reproduction by longitudinal fission; sexual reproduction not known.Stomatocysts thick walled with smooth surface, except for a few slender radially protruding filaments. A.radians is not uncommon in subarctic, temperate and subtropical coastal waters; Atlantic, Mediterranean, Pacific.

Information contributed by: J. Throndsen. The most recent alteration to this page was made on 2021-10-08 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=43846

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024