Cyanodictyon Pascher, 1914

Holotype species: Cyanodictyon endophyticum Pascher

Original publication and holotype designation: Pascher, A. (1914). Über Symbiosen von Spaltpilzen und Flagellaten mit Blaualgen.. Berichte der Deutschen Botanischen Gesellschaft 32(5): 339-352, pl. VII.

Description: Unicellular-colonial; free-living, microscopic, sometimes colonies elongated up to 400 _m long, in a form of an irregular or irregular-spherical net composed of mucilaginous, incidentally dividing (tube-like) strings, containing an irregular, uniseriate or (later, in old colonies) multiseriate and densely packed row(s) of more or less spherical, ellipsoidal, oval to rod-like cells. Cells pale blue-green, yellowish or greyish blue, without aerotopes, sometimes forming pseudofilaments. Mucilage fine, colorless, homogeneous, sometimes visible only after staining. The mucilage envelopes the whole colony (in old colonies). Most species have between or on the cells granular or ringlike, iron oxide precipitates, usually between cells. Thylakoids (in small numbers) located peripherally within cells. Involuted filamentous cells (?). Division of cells (pinching) in one and the same plane in successive generations, perpendicular to the long axis of cells (and usually also to the axis of a mucilaginous string). After division, cells separate from each other a distance of up the length of one cell. Development of a three-dimensional colony starts from a short pseudofilament. Reproduction by dissociation of colonies. The type species lives encased within mucilaginous colonies of planktonic Anabaena, other species free-living, planktonic, in clear or eutrophic lakes, known mainly from northern Europe (Scandinavia, northern Germany) and northern N. America (Canada).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-02 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.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 02 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 29 February 2024

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