Helkesimastix Woodcock & Lapage, 1915: 353
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.
NCBI Nucleotide Sequences
Numbers of names and species: There are 2 species (and infraspecific) names in the database at present, of which 1 has been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently 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):
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=47500
Cite this record as:
Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 12 December 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:107189