163,924 species and infraspecific names are in the database, 22,783 images, 63,106 bibliographic items, 484,278 distributional records.

Pinnunavis H.Okuno, 1975

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Bacillariophyta
Subphylum Bacillariophytina
Class Bacillariophyceae
Subclass Bacillariophycidae
Order Naviculales
Suborder Naviculineae
Family Naviculaceae

Holotype species: Pinnunavis elegans (W.Smith) Okuno

Original publication and holotype designation: Okuno, H. (1975). The fine structure of the frustules of the Bacillariophyta. In: Advance of Phycology in Japan. (Tokida, J. & Hirose, H. Eds), pp. 97-113. The Hague: W. Junk.

Taxonomic status: currently recognized as a distinct genus.

Description: Valves elliptic-lanceolate (naviculoid) with obtuse or produced ends. Axial area linear, narrow or widened in the middle; suborbicular to elliptical central area large. Striae chambered; each chamber (alveolus) with an outer wall containing 3-4 rows of small round poroids; inner wall absent; side walls of the alveoli not perforated.

Information contributed by: M.C. Amspoker & M.D. Guiry. The most recent alteration to this page was made on 12 Jun 2018 by M.D. Guiry.

Comments: Species of the genus resemble Navicula in valvar outline and Pinnularia in presence of alveoloid striae. Krammer & Lange-Bertalot (1986) retain the type species in Navicula, but later authors recognise the genus.

Numbers of names and species: There are 10 species names in the database at present, as well as 1 infraspecific names. Of the species names, 10 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.

References
Moe, R.L. & Silva, P.C. (2011). Pinnunavis vs. Pinnuavis. Diatom Research 26(4): 319.

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.

Created: 23 April 2002 by M.D. Guiry

Verified by: 17 August 2011 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44435

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 27 October 2021.

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