Apistonema Pascher, 1925
Holotype species: Apistonema commutatum Pascher
Original publication and holotype designation: Pascher, A. (1925). Die braune Algenreihe der Chrysophyceen. Archiv für Protistenkunde 52: 489-564, 56 figures, plate 15.
Request PDFDescription: Barrel-shaped cells with wall and with 1-2 chloroplasts, arranged in branched filaments. Reproduction by biflagellate swarmers, 4-16 formed in each of a number of special swollen cells. Swarmer has 2 unequal flagella, 1-2 chloroplasts and a stigma. Sexual reproduction unknown. Stomatocysts known from one species (A.pyrenigerum). Benthic phases of certain prymnesiophytes appear very similar, but they produce Hymenomonas swarmers. Both marine and freshwater: distribution uncertain. Much doubt persists about this genus and its relationship to the Chrysophyceae or to the Prymnesiophyceae. This complicated situation already started at the description of the type species, because the observations of swarmers were doubtful, and the author admitted that the drawing of swarmers was wrong. It might even have been a phaeophyte stage (see Bourrelly, 1957).
Information contributed by: J.Kristiansen. The most recent alteration to this page was made on 2023-07-25 by E.A. Molinari Novoa.
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: Andrews, H.T. & Wujek, D.E. (2017). Ecology, reproduction, and classification of the haptophyte alga Apistonema From Kansas. Southern Naturalist 62(4): 292-295, 2 figs.
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=43847
Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 25 July 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024
