Cyanophanon Geitler, 1955

Holotype species: Cyanophanon mirabile Geitler

Original publication and holotype designation: Geitler, L. (1955). Lebensweise, fortpflanzung und wachstumsvorgänge bei Cyanophanon mirabile, n. gen., n. sp., einem merkwürdigen Blaualgen-ähnlichen organismus. Österreichische Botanische Zeitschrift 102(2-3): 235-272.

Description: Unicellular; cells elongated, narrow, cylindrical up to very long cylindrical, heteropolar, rounded at the apex and shortly narrowed at the base, attached to the substrate by help of the very fine, cup-shaped, colorless, thin pseudovagina. The "filamentous" cells are sometimes in the upper part asymmetrically pseudodichotomously divaricated, at the ends with developed rows of daughter cells-exocytes. Cell content pale blue-green, thylakoids in cells concentrically arranged along the cell walls. Reproduction by exocytes, which differentiate by the rapid successive (or almost spontaneous ?) crosswise fission of cell ends; they remain usually for a distinct period joined to the mother cell as rows of small cells, later separate, join to the substrate by their side, change their polarity and grow from the upper side into the new cylindrical cell (Geitler 1960). Both species are known from periphyton; they grow attached to the filamentous algae, submerged plants and detritus particles, in more or less clear, unpolluted small aquatic bodies, pools, backwaters, swamps, C. mirabile mainly in mountain areas of the whole temperate zone, C. minor in the central (Pannonian) basin of the River Danube (Europe).

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 neuter.

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.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44912

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 19 May 2024