Diacronema Prauser, 1958
Holotype species: Diacronema vlkianum Prauser
Original publication and holotype designation: Prauser, H. (1958). Diacronema vlkianum, eine neue chrysomonade. Archiv für Protistenkunde 103: 117-128.
Description: Motile cells with two unequal flagella and a short haptonema. Longer anterior flagellum with fine non-tubular hairs and with or without of minute dense bodies; posterior flagellum sometimes with a basal swelling and vestigial. Occasionally dense bodies on cell surface. A pit or canal penetrating the cell near the long anterior flagellum. Chloroplast single or double without a pyrenoid, sometimes with an eyespot located on the external face of the plastid. Non-motile cells with or without incomplete appendages.The most recent alteration to this page was made on 2021-10-04 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.
Comments: Emended by Bendif & Véron in Bendif et al. (2011: 756); the revised diagnosis is given above.
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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44140
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 04 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 02 December 2023