Amphichrysis Korshikov, 1929

Holotype species: Amphichrysis compressa Korshikov

Original publication and holotype designation: Korshikov, A.A. (1929). Studies on the Chrysomonads I. Archiv für Protistenkunde 67(2): 253-290, 1 figure, plates 8-11.

Description: Ellipsoid to ovoid unicells, more or less flattened in the longitudinal axis, bearing a single emergent flagellum. Protoplast with prominent nucleus, 2 Golgi bodies, 2-4 contractile vacuoles, 4 chloroplasts, and 1-4 stigmata. Chloroplasts usually flanked laterally by masses of chrysolaminaran. Reproduction by longitudinal division of the cell. Formation of stomatocysts preceded by secretion of temporary envelope and mucilage round the cell. Several authors believe Amphichrysis represents a double Chromulina possessing several paired organelles (chloroplasts, stigmata, Golgi bodies, contractile vacuoles), whereas nucleus and flagella apparatus are thought to be fused. In freshwater, very rare, in Europe and North America. A marine, bloom-forming occurrence in Egypt (Labib 1992) should be re-examined.

Information contributed by: H.R.Preisig. The most recent alteration to this page was made on 2024-03-04 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 feminine.

Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43842

Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 04 March 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024