Ewamiania G.B.McGregor & B.C.Sendall, 2017

Holotype species: Ewamiania thermalis G.B.McGregor & B.C.Sendall

Original publication and holotype designation: McGregor, G.B. & Sendall, B.C. (2017). Ewamiania thermalis gen. et sp. nov. (Cyanobacteria, Scytonemataceae), a new cyanobacterium from Talaroo thermal springs, north-eastern Australia. Australian Systematic Botany 30: 38-47, 4 figs.

Description: Filaments densely arranged to form blackish-green hemispherical caespitose mats. Filaments isopolar, cylindrical, straight or flexuous, densely arranged and erect, often parallely fasciculate, with tolypotrichoid false-branching, rarely with scytonematoid false-branching. Vegetative cells short barrel-shaped or isodiametric, 0.5–1.2 times as long as wide, slightly constricted at the cross-walls, with granulated contents; terminal cells widely rounded. Sheath firm, thick, lamellated, uncoloured to yellowish or yellow–brown in colour, cylindrical, closed at the apex. Heterocytes basal and intercalary, solitary, rarely up to 2(3) in a series, developing particularly at the base of branches, spherical or ovoid. Akinetes not known. Reproduction by hormogonia, often with terminal heterocytes, not constricted at cross-walls, separated by necridic cells.

Origin of description: this description is from the original publication; it may have been modified slightly. 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 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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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=52246

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 27 April 2024