Dimorphism is the ability to change shape due to environment. Dimorphism Fungi can exist in both unicellular and filamentous states. Dimorphism is seen in the fungus Histoplasma capsulatum. This fungus is endemic to the soil and resides in the human lung as a cyst. It causes histoplasmosis disease. Such as Blastomyces dermatitides, Sporotrichum schenckii, Candida albicans, Mucor rouxii, Histoplama capsulatum etc.