Pleurotaenium trabecula Nägeli

SÁNCHEZ, Luzmila, SÁNCHEZ, Fernando R., RÍOS-TOUMA, Blanca & José V. MONTOYA, 2025, Desmidiales (Desmidiaceae, Zygnematophyceae) from lowland rivers and floodplain lakes of Ecuadorian Amazonia, Cryptogamie, Algologie 20 (3), pp. 31-60 : 50

publication ID	https://doi.org/10.5252/cryptogamie-algologie2025v46a3
DOI	https://doi.org/10.5281/zenodo.17067995
persistent identifier	https://treatment.plazi.org/id/C7390B66-FFEA-9124-ACCA-FDF90B08FAD0
treatment provided by	Plazi
scientific name	Pleurotaenium trabecula Nägeli
status

Treatment

( Fig. 6 View FIG F-H)

Neue Denkschriften der Allgemeinen Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften 10 (7): 104 ( Nägeli 1849).

Docidium trabecula (Ehrenberg) Reinsch, Abhandlungen der Naturhistorischen Gesellschaft zu Nürnberg 3 (2): 182 ( Reinsch 1866). — Pleurotaenium trabecula f. granulatum G. S. West , Journal of Botany 37: 113 ( West 1899).

DISTRIBUTION. — Cosmopolitan. Amazon Basin: Grönblad (1945); Förster (1969); Thomasson (1971); Uherkovich & Franken (1980); Sophia & Huszar (1996), Gutiérrez & Cadima (2004); Cadima (2013); Cunha de et al. (2013). Western Amazonia (lowlands): Montoya (1974); Araujo (2003).

DESCRIPTION

Cells 427.0-596.0 µm long, 28.0-31.0 µm wide; isthmus 20.7-24.3 µm; apex: 16.0-23.2 µm; cells 15-19 times longer than wide. Cells solitary; cell wall hyaline, punctate. Semicells cylindric, slightly and gradually attenuated towards the apices, with a single well-defined basal inflation and rarely with a single undulation above it; lateral margins straight or slightly convex, apices truncately rounded, smooth.

Kingdom	Plantae
Phylum	Charophyta
Class	Conjugatophyceae
Order	Zygnematales
Family	Desmidiaceae
Genus	Pleurotaenium