Petalomonas F.Stein, 1859

Holotype species:

Original publication and holotype designation: Stein, F. [R. von] (1859). Die Organismus der Infusionsthiere nach eigenen Forschungen in systematischer Reihenfolge bearbeitet. I. Abtheilung Allgemeiner Theil und naturgeschichte der hypotrichen Infusionsthiere. pp. [i-vii], vii-xii, [1]-206, pls I-XIV. Leipzig: Verlag von Wilhelm Engelmann.

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Description: Colorless, phagotrophic and/or osmotrophic flagellates, (5)25(60) _ (2)10(25) _m, with no special ingestion organelle visible in the light microscope; some species, at least, have a simple feeding apparatus consisting of a cytoplasmic pocket reinforced by microtubules; cells rigid, ovoid, fusiform or triangular, flattened, usually very flat and leaf-shaped, mostly with strong ribs or keels; canal opening subapical with one emergent flagellum, directed anteriorly, straight, during swimming; paramylon abundant. Freshwater, mainly benthic, in mud sediments; cosmopolitan.

Information contributed by: G.F. Leedale. The most recent alteration to this page was made on 2018-01-01 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.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 01 January 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 08 December 2022

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