Pleurella

Pleurella is a genus of diatoms belonging to the family Surirellaceae. These microscopic, single-celled algae are characterized by their elongated, often sigmoid (S-shaped) frustules, which are the siliceous cell walls that define diatoms. Pleurella species are typically found in freshwater environments, though some may tolerate slightly brackish conditions. Their morphology features prominent fibulae, internal supporting structures, and a raphe system along the valve face, enabling motility. The ornamentation of the frustule, including the striae and fibulae arrangement, is crucial for species identification. Pleurella diatoms play a significant role in primary production within aquatic ecosystems and contribute to the global carbon cycle. Further research may be needed to fully understand the diversity and ecological roles of all species within this genus.