Pseudoncobyrsa L.Geitler, 1925

Holotype species: Pseudoncobyrsa lacustris (Kirchner) Geitler

Original publication and holotype designation: Geitler, L. (1925). Synoptische darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 41(Abt. 2): 163-294, pls XVII-XX.

Description: Unicellular - colonial; thallus joined to the stony substrate, gelatinous, more or less hemispherical or flattened (to 2 mm diam.), with cells, situated in distinct "branched", radially or vertically oriented rows, enveloped by gelatinous tubular and confluent envelopes and, moreover, by own spherical but not layered envelopes, which are distinct or more or less diffluent. The whole colony is embedded by homogeneous, limited mucilage. Cells large (to 25 _m long), ellipsoidal to shortly cylindrical cells with rounded ends, with slightly granular content. Cell division not described, probably predominantly perpendicular to the longer axis of radially oriented cells, or sometimes irregularly. Reproduction not described. The type species described from the stony littoral zone of the lake Bodensee (Switzerland/Germany). Little known unrevised genus, possibly a stage of a bangiacean species (Rhodophyceae).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-03 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: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=42898

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 03 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 28 March 2024

 
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