Hortobagyiella L.Hajdu, 1975

Holotype species: Hortobagyiella lacustris L.Hajdu

Original publication and holotype designation: Hajdu, L. (1975). Neue Taxa und Kombinationen bei den Grünalgen (Chlorophyta) aus Ungarn. Annales Historico-Naturales Musei Nationalis Hungarici 67: 25-30.

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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.

Information contributed by: G.M. Lokhorst. The most recent alteration to this page was made on 2014-04-15 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

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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.

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 15 April 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 25 April 2024