Gayralia K.L.Vinogradova, 1969

Holotype species: Ulva oxysperma Kützing

Currently accepted name for the type species: Gayralia oxysperma (Kützing) K.L.Vinogradova ex Scagel & al.

Original publication and holotype designation: Vinogradova, K.L. (1969). K. sistematike poryadka Ulvales (Chlorophyta) s.l. A contribution to the taxonomy of the order Ulvales. Botanicheskij Zhurnal SSSR 54: 1347-1355, one un-numbered figure. [in Russian with English title and summary]

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Description: Gametophyte macroscopic and parenchymatous, initially saccate, later forming leafy monostromatic blades from a few cm to a meter or more in length. The blade may be attached to the substrate by rhizoidal protuberances, or it may be free floating. The blade thallus is always one cell in thickness except in the region of the holdfast. Cells are polygonal and isodiametric in upper portion of blade, becoming more elongate towards base. They possess a parietal chloroplast with single prominent pyrenoid. Asexual reproduction by biflagellate zoospores liberated by disintegration of cell wall on one side of the thallus. Sexual reproduction unknown.

Information contributed by: Skaloud et al. (2018: 149).. The most recent alteration to this page was made on 2018-03-16 by M.D. Guiry.

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

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Škaloud, P., Rindi, F., Boedeker, C. & Leliaert, F. (2018). Süßwasserflora von Mitteleuropa. Freshwater flora of central Europe. Bd 13. Chlorophyta: Ulvophyceae (Krienitz, L. ed.). pp. [i]-vii, [1]-288, 182 figs. Berlin: Springer Spektrum.

Comments: Gayralia is widely distributed from arctic to tropics in marine to brackish habitats. In axenic culture, plants develop abnormally, comprising a colony of round cells with numerous rhizoids; normal morphology returns after bacteria are reintroduced.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 16 March 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 09 December 2022

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