Hydrocytium A.Braun, 1855

Holotype species: Hydrocytium acuminatum (A.Braun) A.Braun

Original publication and holotype designation: Braun, A. (1855). Algarum unicellularium genera nova et minus cognita praemissis observationibus de algis unicellularibus in genere. pp. 114, 6 plates. Leipzig: W. Engelmann.

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Description: Thallus unicellular, oblong or lanceolate to ovate and spindle?shaped with a short hyaline bulging stalk that has a disc attached at the distal end, and a pointed hyaline structure at the proximal end; cell wall smooth or crenate. Chloroplast cup?shaped to reticulate, with one to several pyrenoids surrounded by a continuous (or occasionally bipartite) starch plate. Uninucleate or multinucleate. Asexual reproduction by aplanospores, autospores, and zoospores. Zoospores without a cell wall (the presence of body scales on their surface cannot be ruled out), quadriflagellate, with lateral anterior eyespot and two contractile vacuoles. Thick?walled akinetes formed. Mucilaginous layers may be present in old cultures. Sexual reproduction not documented. Epibiotic.

Information contributed by: Barcyte & Eliáš (2023: 17). The most recent alteration to this page was made on 2023-12-21 by Salvador Valenzuela Miranda.

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

Gender: This genus name is currently treated as neuter.

Most recent taxonomic treatment adopted: Barcyte, D. & Eliáš, M. (2023). Hydrocytium expands the phylogenetic, morphological, and genomic diversity of the poorly known green algal order Chaetopeltidales. American Journal of Botany 110(11, e16238): 1-20, 6 figs.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=52074

Citing AlgaeBase
Cite this record as:
Salvador Valenzuela Miranda in Guiry, M.D. & Guiry, G.M. 21 December 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024