163,959 species and infraspecific names are in the database, 22,784 images, 63,109 bibliographic items, 484,421 distributional records.

Pteridomonas E.Penard, 1889

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Dictyochophyceae
Order Pedinellales
Family Actinomonadaceae

Holotype species: Pteridomonas pulex Penard

Original publication and holotype designation: Penard, E. (1889). Einige Bemerkungen über die in der Umgegend von Wiesbaden verkommenden Protozoën. Jahrbücher des Nassauischen Vereins für Naturkunde 42: 141-146.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.

Description: Cell colorless, rounded to pyriform, with an apical depression from the center of which the single flagellum protrudes. In apical view, outline is +/- hexagonal. Flagellum with two rows of tubular (tripartite) hairs, and minute scales. Paraxial rod present, but less prominent than in many other pedinellids. A wreath of about 12 stiff pseudopodia each supported by a triad of microtubuli, is surrounding the proximal part of the flagellum; they may be withdrawn. A posterior stalk attaches the cell to the substrate, but the cells may detach and the stalk retracted. The attached cell bears only a single (apical) ring of stiff pseudopodial arms. Nutrition heterotrophic. Divison of the cells may result in simple ramified "colonies"; sexual reproduction not observed. Found in freshwater and marine plankton or attached by a stalk; not uncommon; Atlantic, Pacific.

Information contributed by: J.Throndsen. The most recent alteration to this page was made on 8 Oct 2021 by M.D. Guiry.

Numbers of names and species: There are 4 species names in the database at present, of which 3 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
Throndsen, J. (1996). The planktonic marine flagellates. In: Identifying marine phytoplankton. (Tomas, C.R. Eds), pp. 591-730. San Diego: Academic Press.

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 May 2002 by Elizabeth Moran

Verified by: 08 October 2021 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44811

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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