👉 Macrogonidium is a genus of fungi in the family Mycetobacteriaceae. It belongs to the order Pterostilbostracae and is one of the most diverse genera within the phylum Ascomycota, comprising over 500 species. These fungi are characterized by their elongated cell walls that resemble those of a human stomach lining. Macrogonidium's cells are characterized by their thick, white, fibrous septa (spines