155,805 species and infraspecific names are in the database, 21,968 images, 60,221 bibliographic items, 439,336 distributional records.

Planothidium Round & L.Bukhtiyarova, 1996

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Bacillariophyta
Subphylum Bacillariophytina
Class Bacillariophyceae
Subclass Bacillariophycidae
Order Cocconeidales
Family Achnanthidiaceae

Holotype species: Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot

Original publication and holotype designation: Round, F.E. & Bukhtiyarova, L. (1996). Four new genera based on Achnanthes (Achnanthidium) together with a re-definition of Achnanthidium. Diatom Research 11(2): 345-361.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Kingston, J.C. (2003). Araphid and Monoraphid Diatoms. In: Freshwater Algae of North America, Ecology and Classification. (Wehr, J.D. & Sheath, R.G. Eds), pp. 595-636. San Diego: Academic Press.

Numbers of names and species: There are 129 species names in the database at present, as well as 17 infraspecific names. Of the species names, 99 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

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

Created: 23 April 2002 by M.D. Guiry

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Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44202

Citing AlgaeBase
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 16 July 2019.

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