Microspora Thuret, 1850, nom. cons.

Holotype species: Microspora floccosa (Vaucher) Thuret

Original publication and holotype designation: Thuret, G. (1850). Recherches sur les zoospores des algues et les anthéridies des cryptogames. Annales des Sciences Naturelles, séries 3, Botanique 14: 214-260, pls 16-31.

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Precise date of publication: None

Description: "Microspora, gen. nov. (voy. pl. XVII, fig. 4-7). — Je crois devoir former ce genre pour quelques Conferves d'eau douce , à filaments simples, dans lesquelles l'émission des zoospores s'effectue au moyen d'une dislocation particulière du tube. Les cellules semblent pour ainsi dire se déboîter, et le tube se sépare en autant .de fragments qu'il y avait d'articles. Le type de ce genre est le Conferva floccosa, Ag. (Microspora floccosa, Nob.), Algue remarquable par la disposition carrée qu'affecte l'endochrome. Une espèce voisine, mais beaucoup plus petite, sera pour moi le Microspora tenuis. Enfin, je donnerai le nom de Microspora monilifera (au Monilina floccosa, Bory?) à une troisième espèce, dans laquelle la chromule est disposée en petites masses sphériques, ce qui donne aux filaments l'apparence de chapelets. Le Conferva bombycina, Ag., doit vraisemblablement rentrer dans ce genre. Les zoospores de ces diverses espèces sont généralement très petits et pourvus de deux cils. Néanmoins j'ai trouvé parfois dans le Microspora floccosa quelques zoospores plus gros que les autres, et dont le rostre portait trois ou quatre cils. Cette exception se rencontre d'ailleurs dans d'autres Algues Chlorosporées: nous en verrons tout à l'heure dans les Ulves un exemple remarquable." [I think it necessary to form this genus for some freshwater Conferves, with simple filaments, in which the emission of the zoospores is effected by means of a particular dislocation of the tube. The cells seem to be dislocated, so to speak, and the tube separates into as many fragments as there are articles. The type of this genus is Conferva floccosa, Ag. (Microspora floccosa, Nob.), ][an] alga remarkable by the square disposition that affects the endochrome. A neighboring species, but much smaller, will be for me the Microspora tenuis. Finally, I will give the name of Microspora monilifera (to Monilina floccosa, Bory?) To a third species, in which the chromule is arranged in small spherical masses, which gives the filaments the appearance of rosaries. The Conferva bombycina, Ag., must probably enter into this genre. The zoospores of these various species are generally very small and provided with two flagella. Nevertheless, I sometimes found in the Microspora floccosa some zoospores larger than the others, and whose rostrum bore three or four flagella. This exception is encountered in other chlorosporan Algae, as we shall see in the Ulves a remarkable example.]

Information contributed by: Original description with literal translation. The most recent alteration to this page was made on 2017-02-15 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Leliaert, F., Smith, D.R., Moreau, H., Herron, M.D., Verbruggen, H., Delwiche, C.F. & De Clerck, O. (2012). Phylogeny and molecular evolution of the green algae. Critical Reviews in Plant Sciences 31: 1-46.

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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 February 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 09 February 2023

 
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