Acremonium (formerly Cephalosporium) mould fungus , computer illustration. Acremonium is a hyaline hyphomycete (glassy, lightly pigmented conidial fungus) that occurs widely in nature but is also encountered as a contaminant. Asexual reproduction is by conidiophores that produce conidia (phialoconidia or ameroconidia) at hyphal branches. Acremonium is a causative agent of the disease eumycotic mycetoma, or simply eumycetoma, in humans. It is also known to cause opportunistic infections (hyalohyphomycosis) in immunocompromised patients, including arthritis, osteoarthritis, peritonitis, endocarditis, pneumonia, cerebritis, keratitis, nail and subcutaneous infections. Acremonium stromaticum is one of five fungi present in most banana root and rhizome lesions in many parts of the tropics.