Staurastrum leptacanthum is a freshwater green algae belonging to the desmid group, characterized by its star-like or cruciform shape with two symmetrical semicells connected at a central isthmus. Each semicell has a convex and concave side, typically measuring 50 to 150 micrometers in width. It has a cellulose-based cell wall, chloroplasts arranged in a ribbon-like fashion for photosynthesis, and reproduces through binary fission. This algae thrives in nutrient-rich habitats like ponds and lakes, playing a crucial role as a primary producer in freshwater ecosystems by contributing to nutrient cycling and supporting aquatic life.