Jenningsia A.A.Schaeffer, 1918

Holotype species: Jenningsia diatomophaga A.A.Schaeffer

Original publication and holotype designation: Schaeffer, A.A. (1918). A new and remarkable diatom-eating flagellate, Jenningsia diatomophaga nov. gen., nov. spec. Transactions of the American Microscopical Society 37(3): 177-182, 1 plate.

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Description: Shape, cylindrical, 180 microns long by 40 microns in diameter; very metabolic. Flagellum, large, 150 microns long. Cuticula with spiral striations 1 to 2 microns apart; numerous movable club shaped appendages about one and one­ half microns long on the striations. Large central nucleus, 35 microns in diameter. Large contractile vacuole near the anterior end. Several rod-like structures in the pharynx immediately internal to a large mouth at the anterior end. Numerous bodies in the form of rings or strongly biconcave discs from 1 to 3 microns in diameter, in the endoplasm; large clear spheres up to 6 microns in diameter sometimes present. Locomotion, creeping. Food, exclusively diatoms. Reproduction, asexually, by longi­tudinal fission. Habitat, marshes, among algae and diatom!

Origin of description: this description is from the original publication; it may have been modified slightly. The most recent alteration to this page was made on 2024-07-14 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: Cavalier-Smith, T. (2016). Higher classification and phylogeny of Euglenozoa. European Journal of Protistology 56: 250–276, 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=51784

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 14 July 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024