Monostroma Thuret, 1854

Lectotype species: Monostroma bullosum (Roth) Thuret

Original publication: Thuret, G. (1854). Note sur la synonymie des Ulva lactuca et latissima, L., suivie de quelques remarques sur la tribu des Ulvacées. Mémoires de la Société des Sciences Naturelles de Cherbourg 2: 17-32.

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Type designated in: Pfeiffer, L. (1874). Nomenclator botanicus. Nominum ad finem anni 1858 publici juris factorum, classes, ordines, tribus, familias, divisiones, genera, subgenera vel sectiones designantium enumeratio alphabetica. Adjectis auctoribus, temporibus, locis systematicis apud varios, notis literariis atque etymologicis et synonymis. Vol. 2 pp. [1]-760. Cassellis [Cassel]: Sumptibus Theodori Fischeri [Theodor Fischer].

Description: Gametophyte macroscopic and parenchymatous, forming a single-layered (monostromatic) blade. The blade may be attached to the substrate by rhizoidal protuberances, or it may be free floating. The thallus is always one cell in thickness except in the region of the holdfast. Cells are angular or rounded, grouped in fours or separated by mucilage, uninucleate. They possess a single parietal chloroplast encircling most of the cell protoplast, with a single pyrenoid. Asexual reproduction by quadriflagellate zoospores liberated through a pore in the mother cell wall. Sexual reproduction by biflagellate gametes. Sporophyte (Codiolum phase) thick-walled, unicellular, attached to the substrate by a stalk.

Information contributed by: Skaloud et al. (2018: 143).. 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 neuter.

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

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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 19 July 2024

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