Witkowskia Kulikovskiy, Mironov, Glushchenko & Kociolek, 2024

Holotype species: Witkowskia neohambergii (Kezlya, Glushchenko, Kulikovskiy & Kociolek) Kulikovskiy, Glushchenko, Mironov & Kociolek

Original publication and holotype designation: Mironov, A., Glushchenko, A., Maltsev, Y., Genkal, S., Kuznetsova, I., Kociolek, J.P., Liu, Y. & Kulikovskiy M. (2024). Reassessment of pore occlusion in some diatom taxa with re-evaluation of Placoneis Mereschkowsky (Bacillariophyceae: Cymbellales) and description of two new genera. PeerJ 12(e17278): 1–62, 10 figures, 4 tables.

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Description: Cells symmetrical, with variously rostrate to capitate apices. Girdle relatively shallow. Each cell has a single chloroplast with a central pyrenoid. The plastid is formed by two X-shaped plates connected by an isthmus. Central area usually expanded. Isolated pores (stigmoids) may be present near the central area. Axial area narrow. Distal raphe endings curved to the same side of the valve (sometimes this feature is discernable only in SEM). In SEM, proximal endings appear to be straight externally and laterally deflected internally. Striae uniseriate, often slightly radiate around the valve center, more or less parallel towards the apices, composed of small rounded poroids. Areolar openings round to elongated externally, internally occluded by tectula–round or squarish flap-like coverings, equipped with several small struts. Struts are regularly arranged and directed perpendicular to the surface of the valve or may be slightly tilted relative to the areolar opening.

Information contributed by: Mironov & al. 2024. The most recent alteration to this page was made on 2024-06-07 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: Mironov, A., Glushchenko, A., Maltsev, Y., Genkal, S., Kuznetsova, I., Kociolek, J.P., Liu, Y. & Kulikovskiy M. (2024). Reassessment of pore occlusion in some diatom taxa with re-evaluation of Placoneis Mereschkowsky (Bacillariophyceae: Cymbellales) and description of two new genera. PeerJ 12(e17278): 1–62, 10 figures, 4 tables.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=55159

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 07 June 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 06 October 2024