Tetrachrysis A.J.Dop, 1980

Holotype species: Tetrachrysis dendroides A.J.Dop

Original publication and holotype designation: Dop, A.J. (1980). The genera Phaeothamnion Lagerheim., Tetrachrysis gen. nov. and Sphaeridiothrix Pascher & Vlk (Chrysophyceae). Act. Bot. Neerl. 29: 65-86.

Description: The filamentous, branched thallus consists of a series of 2 or 4 cells surrounded by a mucilaginous sheath. Each series originates from simultaneous cell divisions. Cells have 1-2 parietal chloroplasts, a chrysolaminaran vacuole and lipid droplets. Reproduction by swarmers, 1-2 from each mother cell, having 1-2 chloroplasts and a stigma. Flagella heterokont,subapical. Stomatocysts not known. Found in ponds in Europe and North America. This genus was originally considered a palmelloid stage of Phaeothamnion.

Information contributed by: J. Kristiansen. The most recent alteration to this page was made on 2021-10-20 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: Bailey, J.C., Bidigare, R.R., Christensen, S.J. & Andersen, R.A. (1998). Phaeothamniophyceae classis nova: a new lineage of chromophytes based upon photsynthetic pigments, rbcL sequence analysis and ultrastructure. Protist 149: 245-263.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44840

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 20 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024