Ammatoidea West & G.S.West, 1897
Holotype species: Ammatoidea normanii West & G.S.West
Original publication and holotype designation: West, W. & West, G.S. (1897). A contribution to the freshwater algae of the south of England. Journal of the Royal Microscopical Society, London 1897: 467-511.
Request PDFDescription: Filamentous; filaments isopolar, long, solitary or in groups, cylindrical, in the middle usually arcuated or irregularly curved, with firm sheaths, which are sometimes yellowish brown coloured and layered; sometimes occur false branchings. Trichomes at cross walls slightly constricted or unconstricted, uniserial, attenuated at both ends and sometimes terminated by long, thin hairs with co1ourless cells. Heterocytes and akinetes always absent.
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.
Comments: The type species (A. normannii) occurs sporadically in periphyton and metaphyton on water plants in clear and cold streaming waters and in littoral of clear, unpolluted lakes. Localities are known allover the world, but the taxonomic identity of all floristic data is not clear. One species was described from a spring in Georgia (USSR), the another one from thermal springs in the Yellowstone National Park (U.S.A.).
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=45086
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 25 April 2024
