Compsothamnionella Itono, 1977

Holotype species: Compsothamnionella japonica (Itono) Itono

Currently accepted name for the type species: Pleonosporium japonicum Itono

Original publication and holotype designation: Itono, H. (1977). Studies on the ceramiaceous algae (Rhodophyta) from southern parts of Japan. Bibliotheca Phycologica 35: 1-499, 72 figs.

Description: Differs mainly in reproductive features from Compsothamnion Nägeli and several other genera presently placed in Compsothamnieae. Procarps borne subterminally on fertile branches with a single auxiliary cell produced from one of 2 pericentral cells (2 auxillary cells and 3 pericentral cells in Compsothamnion). Carposporophyte with successive groups of carposporangia surrounded by curved filaments from axial cells below. Spermatangial clusters and tetrahedrally-divided, pedicillate tetrasporangia similar to those in Compsothamnion.

Information kindly contributed by E.M. Wollaston but may now be outdated.

Taxonomic status: This name is currently regarded as a synonym of Pleonosporium.

Comments: Known only from Japan and southern Australia. Relationships of taxa within Compsothamnieae require further investigation.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 12 July 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024