Micrasterias americana is a species of desmid, characterized by its large and symmetrical star-shaped cells, typically ranging from 100 to 300 micrometers in diameter. Each cell is enclosed in a delicate, transparent cellulose cell wall adorned with intricate patterns. Multiple disk-shaped chloroplasts are symmetrically arranged within the cell, facilitating photosynthesis. Reproduction occurs both asexually through binary fission and sexually via gamete formation and conjugation to produce zygospores. Found in freshwater environments like ponds, lakes, and slow-moving streams, Micrasterias americana attaches to submerged surfaces or drifts passively. It contributes significantly to oxygen production and serves as a food source for microorganisms within aquatic ecosystems. Non-motile in nature, its distinctive morphology and reproductive strategies highlight its ecological role and make it a subject of interest in freshwater biology studies.