Pseudoleyanella H.Takano, 1985

Holotype species: Pseudoleyanella lunulata H.Takano

Original publication and holotype designation: Takano, H. (1985). A new diatom from sand-flats in Mikawa Bay, Japan. Bulletin of the Tokai Regional Fisheries Laboratory 115: 29-37, 20 fig.

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Description: Cells united in ribbon-shaped chains by marginal ridges. In girdle view frustules usually narrow, rectangular; constricted close to the apices with low polar elevation. Frustule isovalvate; valves asymmetrical about apical axis, lunate. Valve face with areolae, areolae poroid with rotae, partially occuled by net-works; areolae irregularly lined up along apical axis; central area, sometimes present, indefinite in shape; axial area absent. An ocellulus present at each pole, two ocelluli of each valve in a slightly diagonal and clockwise position. Marginal ridges separate valve face from mantle. Mantle shallow, with a row of areolae. Pili and tubular processes absent. Although similar in valvar outline to Campylosira cymbelliformis (A. Schmidt) Grunow ex Van Heurck, Pseudoleyanella differs from the former genus in the absence of tubular processes and interlocking spines, the positioning of the ocelluli, and the isovalvate frustule. Found in the marine littoral waters of Mikawa Bay, Aichi Prefecture, Japan.

Information contributed by: M.C. Amspoker. The most recent alteration to this page was made on 2023-04-06 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: Williams, D.M. & Sims, P.A. (2023). The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution. Phytotaxa 591(3): 209219, 24 figs, 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=47012

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 April 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024