Hortobagyiella L.Hajdu, 1975: 25
Taxonomic status: currently recognized as a distinct genus.
Description: Usually solitary, forming weak, few-celled filaments after cell division(s), free-floating. Cells oblong to ellipsoidal, causing a slight adherence of adjacent cells when linearly arranged. Cell membrane delicate and hyaline. Chloroplast single, parietal, and plate-shaped, without pyrenoids. Cell wall densely or sparingly encrusted with warty brownish projections of different shape and size. Multiplication of cells only by vegetative cell division. Method of sexual reproduction unknown. Hortobagyiella planktonic from stagnant waters such as reservoirs, lakes, and fishing pools in central Europe. Hortobagyiella classified in Ulotrichales because of inability to produce autospores. The granular outer surface indicates close relationship to Marvania, but with differing patterns of cytokinesis. Cytokinesis in Hortobagyiella follows usual pattern resulting in late division of parental cell wall into two equal portions; in Marvania occurring via so-called budding-like principal, resulting in early asymmetrical breakage of parental cell wall. Usually solitary, forming weak, few-celled filaments after cell division(s), free-floating. Cells oblong to ellipsoidal, causing a slight adherence of adjacent cells when linearly arranged. Cell membrane delicate and hyaline. Chloroplast single, parietal, and plate-shaped, without pyrenoids. Cell wall densely or sparingly encrusted with warty brownish projections of different shape and size. Multiplication of cells only by vegetative cell division. Method of sexual reproduction unknown. Hortobagyiella planktonic from stagnant waters such as reservoirs, lakes, and fishing pools in central Europe. Hortobagyiella classified in Ulotrichales because of inability to produce autospores. The granular outer surface indicates close relationship to Marvania, but with differing patterns of cytokinesis. Cytokinesis in Hortobagyiella follows usual pattern resulting in late division of parental cell wall into two equal portions; in Marvania occurring via so-called budding-like principal, resulting in early asymmetrical breakage of parental cell wall.
Numbers of names and species: There is only one species or infraspecific name in the database at present.
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):
Hortobagyiella verrucosa (H.Heynig) F.Hindák P
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.
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=45655
Citing AlgaeBase
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 18 May 2013.
