Gloeothece Nägeli, 1849

Holotype species: Gloeothece linearis Nägeli

Original publication and holotype designation: Nägeli, C. (1849). Gattungen einzelliger Algen, physiologisch und systematisch bearbeitet. Neue Denkschriften der Allg. Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften 10(7): i-viii, 1-139, pls I-VIII.

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Description: Unicellular-colonial; colonies (groups of cells) microscopic or forming multicellular aggregations of small colonies, up to macroscopic, gelatinous, granular or in amorphous layers; cells or their groups enveloped always by own mucilaginous, usually concentrically lamellated, limited envelopes, which copy the cell form. The mucilage layers are developed by the periodic production of slime from cells; mucilage colorless, yellow-brownish, bluish or dark blue, rarely reddish; cells situated in colonies irregularly, more or less distant one from another. Cells widely oval, oval or rod-like, pale greyish blue, blue-green or olive-green, usually with slightly granular content or with several prominent granules. Cell division (binary fission) crosswise, perpendicular to the long axis of elongated cells in successive generations; the daughter cells separate soon one from another and produce immediately their own mucilaginous envelopes; cells grow into the original size and shape before the next division, but also nanocyte production was sporadically observed. Reproduction by the dissociation of colonies. Majority of species is known from aerophytic localities, mainly from wet rocks in mountains, all over the world. Few species grow in metaphyton of clear small aquatic bodies with plenty of detritus and aquatic plants, one species was described from plankton of Scandinavian lakes.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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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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.; searched on 15 June 2024

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