Letestuinema Frémy, 1930
Lectotype species: Letestuinema gabonense Frémy
Original publication: Frémy, Abbé P. (1930 '1929'). Les Myxophycées de l'Afrique équatoriale française. Archives de Botanique, Mémoires 3(2): 1-508, 362 figs, 1 folded map.
Request PDFType designated in: Geitler, L. (1942). Schizophyta: Klasse Schizophyceae. In: Die natürlichen Pflanzenfamilien, Sweite Auflage. (Engler, A. & Prantl, K. Eds) Vol.1b, pp. 1-232. Leipzig: Wilhelm Engelmann.
Description: Thallose; thallus joined to the substrate, more or less hemispherical, macroscopic (to 2 mm diam.), gelatinous, firm, composed of more or less straight, polarized, branched, more or less erect filaments. Filaments situated more or less parallel and near to one another, radially oriented, with true branching (V-type). Sheaths colorless in young filaments, later yellow to brown, thick, lamellated. Trichomes uniseriate, composed of barrel-shaped, mainly isodiametric cells. Heterocytes very rare, intercalary. Reproduction by nanocytes and monocytes (probably nonmotile), which arise at the ends of branches; monocytes differentiate usually in rows. Hormogonia and akinetes not known. Sessile, epilithic and on shells of molluscs in streams in the tropics (equatorial Africa).
Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-06 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: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=47365
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024
