Ambo Witkowski, Ashworth, Lange-Bertalot & Klein, 2020

Holotype species: Ambo tenuissimus (Hustedt) A.Witkowski, Lange-Bertalot & Ashworth

Original publication and holotype designation: Witkowski, A., Ashworth, M., Li. Ch., Sagna, I., Yatte, D., Górecka, E., Franco, A.O.R., Kusber, W.H., Klein, G., Lange-Bertalot, H., Dabek, P., Theriot, E.C. & Manning, S.R. (2020). Exploring diversity, taxonomy and phylogeny of diatoms (Bacillariophyta) from marine habitats. Novel taxa with internal costae. Protist 171(125713): [1-25].

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Description: Cells are rectangular, withrounded apices in girdle view. Girdle is composedof several plain and open bands. Valves are linearelliptic with two costae which are straight or slightlycurved to the outside and protrude deeply intothe valve. The spacing of the costa in Ambo isdistinctive, being restricted to near the apices. Thesternum is indistinct, observed only in the valveface apex in SEM, whereas observed in TEM ispositioned between the costa within the valve cen-ter. In all species included in the newly establishedgenus, areolae are restricted to the ends of thevalve face and mantle distal to the costa, leavingthe central part of the valve devoid of any poration.Areolae are relatively small and simple, with noobvious occlusions, and do not open into distinctgrooves internally. Areolae arranged in paralleltransapical striae of the valve face tending to beslightly oblique towards the mantle margin.

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 2020-05-11 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=52773

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 11 May 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024