Sphenomonas F.Stein, 1878

Holotype species: Sphenomonas quadrangularis F.Stein

Original publication and holotype designation: Stein, F. von (1878). Der Organismus der Infusionsthiere nach eigenen forschungen in systematischere Reihenfolge bearbeitet. III. Abtheilung. Die Naturgeschichte der Flagellaten oder Geisselinfusorien. I. Hälfte, Den noch nicht abgeschlossenen allgemeinen Theil nebst erklärung: Der sämmtlichen Abbildungen enthaltend. pp. i-x, 1-154, pls I-XXIV. Leipzig: Verlag von Wilhelm Engelmann.

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Description: Colorless, osmotrophic cells with 2 emergent, unequal, heterodynamic flagella, the longer directed anteriorly, the shorter curving laterally; cells 10-35 _m long, cylindrical or ovoid, characterized by one to several longitudinal ridges, giving an angular cross-section; cells usually rigid but capable of some distortion under extreme stimuli, easily squashed; no records of phagotrophy or food vacuoles; little known genus with no modern studies. Freshwater and marine; cosmopolitan but several species known only from Australia.

Information contributed by: G.F. Leedale. The most recent alteration to this page was made on 2021-03-18 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43645

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 18 March 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 December 2024