Pseudodictyosphaerium Hindák, 1978

Holotype species: Pseudodictyosphaerium fluviatile (Hindák) Hindák

Currently accepted name for the type species: Mychonastes fluviatilis (Hindák) Krienitz, C.Bock, Dadheech & Proschold

Original publication and holotype designation: Hindák, F. (1978). New taxa and reclassifications in the Chlorococcales (Chlorophyceae). Preslia, Praha 50: 97-109.

Precise date of publication: October

Description: Thalli comprising spherical to oval multicellular colonies to 60 µm diameter, with cells embedded in structureless, colorless mucilaginous envelope. Living cells at periphery of colony, firmly attached at ends of up to four generations of dichotomously arranged cell wall halves. Cells oval with rounded ends, 1.5-10 x 1.5-7 µm, smooth cell walls and distinct oil droplets. Cells uninucleate; chloroplast single and parietal, dividing prior to autospore formation; pyrenoids absent. Asexual reproduction by autospores, 2-4 per cell; released by longitudinal division of mother cell wall into 2-4 parts. Flagellated stages and sexual reproduction unknown. Pseudodictyosphaerium planktonic, sporadic in spring and fall; known from Europe in rivers, pools and lakes. Genus resembles Dictyosphaerium but differs based on absence of pyrenoids.

Information kindly contributed by F. Hindák & D. Garbary but may now be outdated.

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

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Chlorococcales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 232-264. Ruggell: A.R.A. Gantner Verlag K.-G..

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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. 02 May 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024