159,429 species and infraspecific names are in the database, 22,547 images, 62,037 bibliographic items, 463,454 distributional records.

Bitrichia Woloszynska, 1914

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Chrysophyceae
Order Hibberdiales
Family Stylococcaceae

Holotype species: Bitrichia wolhynica Woloszynska

Original publication and holotype designation: Woloszynska, J. (1914). Zapiski algologiczne/Algologische Notizen. Sprawozdania z Posiedzen Towarzystwa Naukowego Warszawskiego. Wydzial II 7: 22-26, 1 pl [11 figs].

Taxonomic status: currently regarded as a synonym of .

Most recent taxonomic treatment adopted: Nicholls, K.H. & Wujek, D.E. (2003). Chrysophycean Algae. In: Freshwater Algae of North America. (Wehr, J.D. & Sheath, R.G. Eds), pp. 471-510. San Diego: Academic Press.

Description: Cell surrounded by a hyaline lorica constructed of fibrils. Lorica has an inner part, surrounded by an outer part drawn out into 2 or 3 hollow terminal processes. A lateral porus with a short neck passes from the inner through the outer lorica wall. Protoplast with a simple or ramified rhizopodium projecting through the porus, sometimes confounded with a flagellum; parietal chloroplast without stigma and in some species two contractile vacuoles. Reproduction by longitudinal division. One or both daughter cells - amoeboid, without flagella - leave the lorica. Stomatocysts reported from 2 species, formed outside the porus. Planktonic, in ponds and lakes, sporadic, but widely distributed.

Information kindly contributed by J. Kristiansen but may now be outdated.

Numbers of names and species: There are 10 species names in the database at present, of which 7 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
Kristiansen, J. & Preisig, H.R. (2001). Encyclopedia of Chrysophyte genera. Bibliotheca Phycologica 110: 1-260.

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: 19 April 2002 by Elizabeth Moran

Verified by: 23 August 2016 by M.D. Guiry

Linking to this page: http://algaebase.org/search/genus/detail/?genus_id=43858

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 27 October 2020.

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