Oocystella Lemmermann, 1903

Holotype species: Oocystella natans Lemmermann

Description: Cells solitary or in 2-4-8-16-celled colonies within thin, hyaline, sometimes concentrically stratified mucilaginous envelope or within an expanded mother cell wall. Colony oval, ellipsoid or spherical, up to 55 &m in diameter. Cells broadly fusiform, ellipsoid, oval to nearly spherical, 4-32 x 2.5-22 &m. Cell wall smooth, often with polar thickenings. Chloroplast 1-4 (infrequently more), parietal, stellate or H-shaped, more frequently bowl-shaped or discoid, with a pyrenoid. Asexual reproduction by 2-4-8-(16) autospores released by rupture of the mother cell wall; compound colonies resulting from persistent mother cell walls of parental generation of frequent occurrence. Hindák (1988) reported oogamy in one species, O. oogama. Oocystella planktonic, predominantly freshwater; cosmopolitan.

Information contributed by: G. Dillard. The most recent alteration to this page was made on 2010-07-07 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Comments: cf. remarks under Oocystis)

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44332

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 07 July 2010. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024