Distrionella D.M.Williams, 1990

Holotype species: Distrionella asterionelloides D.M.Williams

Original publication and holotype designation: Williams, D.M. (1990). Distrionella D.M. Williams, nov. gen., a new araphid diatom (Bacillariophyta) genus closely related to Diatoma Bory. Archiv für Protistenkunde 138: 171-177, 17 figs.

Request PDF

Description: Frustules rectangular; poles occasionally inflated. Valves linear to linear-lanceolate and tapering to capitate and occasionally faintly heteropolar ends. Striae irregularly spaced between transapical ribs; axial area thin. Polar pore fields confined to the mantle and consisting of several porelli arranged in regular rows, extending only slightly onto the valve face. A single rimoportula is located within the polar rib. Spines absent. Girdle bands simple open bands; valvocopula ligulate, copulae narrow and bear a single row of poroids. Freshwater, epilithic; collected from Calgary, Isle of Mull and Loch Assynut, Sutherland, Scotland. Emend Morales, Bahls & Cody (2005: 129, 130).

Information contributed by: D. B. Czarnecki. The most recent alteration to this page was made on 2017-03-06 by Wendy Guiry.

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

Most recent taxonomic treatment adopted: Cox, E.J. (2015). Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae (Diatoms). In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. 13th Ed. Photoautotrophic eukaryotic algae Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Heterokontophyta/Ochrophyta, Chlorarachniophyta/Cercozoa, Euglenophyta/Euglenozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 64-103. Stuttgart: Borntraeger Science Publishers.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44191

Citing AlgaeBase
Cite this record as:
Wendy Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 25 April 2024