Chrysapsis Pascher, 1910

Lectotype species: Chrysapsis fenestrata (Pascher) Pascher

Original publication: Pascher, A. (1910). Chrysomonaden aus dem Hirschberger Grossteiche: Untersuchungen über die Flora des Hirschberger Grossteiches. I. Teil. Monographien und Abhandlungen zur Internationale Revue der gesamten Hydrobiologie und Hydrographie 1: 1-66.

Type designated in: Bourrelly, P. (1957). Recherches sur les Chrysophycées. Morphologie, phylogénie, systématique. Mémoire Hors-Série Revue Algologique 1: [1]-412, incl. 11 pls.

Request PDF

Description: Unicells, more or less amoeboid, ovoid to pyriform or more irrgularly shaped, with a single emergent flagellum. Chloroplast variable, usually reticulate or not clearly differentiated, at the base or the equator of the cell; stigma present in some species. Contractile vacuoles one-three at the anterior end, posteriorly with several small chrysolaminaran granules. Cell division by longitudinal fission, may occur while actively swimming. Sometimes cells round up, lose their flagella, and develop palmelloid colonies. Stomatocysts recorded for 3 species, but sexual reproduction not known. Found in Europe, mostly in freshwater ponds; one species within water-storage cells of Sphagnum and one in brackish water.

Information contributed by: H. R. Preisig. The most recent alteration to this page was made on 2021-10-18 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: Kristiansen, J. & Preisig, H.R. (2001). Encyclopedia of Chrysophyte genera. Bibliotheca Phycologica 110: 1-260.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44490

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 18 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 20 April 2024