163,902 species and infraspecific names are in the database, 22,783 images, 63,101 bibliographic items, 483,547 distributional records.

Pantocsekiella K.T.Kiss & E.Ács, 2016

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Bacillariophyta
Subphylum Bacillariophytina
Class Mediophyceae
Subclass Thalassiosirophycidae
Order Stephanodiscales
Family Stephanodiscaceae

Holotype species: Pantocsekiella ocellata (Pantocsek) K.T.Kiss & Ács

Original publication and holotype designation: Ács, E., Ari, E., Duleba, M., Dressler, M., Genkal, S.I., Jakó, E., Rimet, F., Ector, L. & Kiss, K.T. (2016). Pantocsekiella, a new centric diatom genus based on morphological and genetic studies. Fottea, Olomouc 16(1): 56-78, 23 fig., 5 tables.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Kociolek, J.P., You, Q.M., Stepanek, J.G., Lowe, R.L. & Wang, Q.X. (2016). New freshwater diatom genus, Edtheriotia gen. nov. of the Stephanodiscaceae (Bacillariophyta) from south-central China. Phycological Research 64: 274-280, 28 figs.

Description: Frustules are disc–shaped, solitary, seldom in short chains. Valves circular or slightly quadrangular, the valve face divided into a polygonal central area and a striated marginal one. The polygonal central area is more or less flat or radially undulate (3–5 undulation) or slightly tangentially undulated. The undulated forms with a pattern of three or more small or large alternating lacunae with or without papillae; this pattern is arranged in 6 or more triangular sectors, or the central area with numerous randomly located lacunae and small punctae which do not penetrate the cell wall. The central area can be relatively small or large, not depending on the diameter. The marginal part of the valve is structured by alveolate striae externally, separated by hyaline strips, striae are straight, unequal in length and a few of them are bifurcated. Simple alveolae are present within the marginal area internally. The inner aperture of the alveolae can be round or elongated. Costae are usually equal in length but those bearing a fultoportula are often shorter. The valve has one or a few rimoportulae situated in the submarginal zone on the costa or just below it (sessile internally and round aperture externally); the orientation of the lip varies. Generally, every third to fifth interstria bears a marginal fultoportula but it may occur on each to every 6th interstria. Their internal openings are surrounded by two satellite pores. Valve face fultoportulae (VFP: 1–4) are usually surrounded by two (1–3) satellite pores. In many cases the external openings of VFP are very difficult to observe, because many valves have some punctae irregularly arranged in the central part. Small granules are frequently observed on the interstriae near the margin and found sporadically on the whole valve face.

Origin of description: this description is from the original publication; it may have been modified slightly.

Characters considered diagnostic of Pantocsekiella: Cyclotella species differ from Pantocsekiella in arrangement of marginal fultoportulae and rimoportula(e). Rimoportula(e) of Cyclotella situated in the ring of marginal fultoportulae and striae (costae) are equal in length. Lindavia species differ from Pantocsekiella in structure of central area. Lindavia species have areolae in central area and complex alveolar structure, Pantocsekiella and Cyclotella never.

Numbers of names and species: There are 41 species names in the database at present, as well as 2 infraspecific names. Of the species names, 41 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.

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: 17 September 2016 by Salvador Valenzuela Miranda

Verified by: 06 March 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=52112

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 22 October 2021.

SITE © 1996 - 2021 M.D. Guiry. All rights reserved.

Website Design : 249 Design Studio