Cyanobotrys Hoffmann, 1991

Holotype species: Cyanobotrys lambinonii L.Hoffmann

Original publication and holotype designation: Hoffman, L. (1991). Terrestrial Cyanophyceae of Papua New Guinea. II. Cyanobotrys lambinonii gen. et spec. nov. (Stigonematales). Archiv für Hydrobiologie, Supplementbände (Algological Studies) 92: 349-355.

Description: Filamentous and thallose; filaments more or less free-living, not coalescing laterally in compact mats, irregularly branched, growing and integrated into a caespitose, brownish thallus. Trichomes multiseriate with irregular lateral true branching; branches uniseriate or multiseriate, more or less short, often grouped together. Sheaths partly lamellated, hyaline to yellow-brownish. Cells in the main trichomes more or less irregular globose or shorter than wide. Heterocytes intercalary, localized usually in the marginal position in the multiseriate trichome, more or less globose. Reproduction by cylindrical, uniseriate hormogonia with several to more than 20 cells, which separate from the ends of branches, and by a special type of unicellular monocytes (called by Hoffmann (1991) phragmocytes); phragmocytes arise by the fragmentation of a part of lateral a branch under the apical cylindrical hormogonium in solitary cells; sometimes the whole branch disintegrates except for some basal cells and the cells corresponding to the apical meristematic zone (hormogonium); phragmocytes escape simultaneously at the apex of lateral branches after the separation of the apical hormogonium. Development of new trichomes and filaments from phragmocytes and hormogonia not observed. Aerophytic species growing on almost bare calcareous soil in the lowland tropical area. Known only from the northern coast of Papua New Guinea (Madang province).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-06 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 masculine.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=45358

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024