Helkesimastix Woodcock & Lapage, 1915
Holotype species: Helkesimastix faecicola Woodcock & Lapage
Taxonomic status: currently recognized as a distinct genus.
Description: Tiny (1-7 µm), pyriform, colorless cell, with one trailing flagellum; not euglenoid in appearance, having an anterior nucleus, no reservoir and a double row of bodies in a groove (suggesting Cryptophyceae). Calway and Lackey (1962) place it close to Clautriavia; Bourrelly (1970) suggests it might be a bodonid; Patterson and Zölffel (1991) suggest Cercomonas, a colorless biflagellate with heterodynamic flagella. Polluted freshwaters; very rare, UK and USA.
Information contributed by: G.F. Leedale. The most recent alteration to this page was made on 1 Feb 2012 by M.D. Guiry.
Numbers of names and species: There are 2 species names in the database at present, of which 1 has 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.
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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: 28 September 2004 by Robert Wilkes
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=47500
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 23 September 2018.