Gliocladium is an asexual fungal genus in the Hypocreaceae. Certain other species including Gliocladium virens were recently transferred to the genus Trichoderma and G. roseum became Clonostachys rosea f. rosea in the Bionectriaceae. Gliocladium is a mitosporic, filamentous fungus. Species of Gliocladium rarely produce a sexual state. Most pathogenic, disease-causing fungi in humans are mitosporic like Gliocladium. Gliocladium is filamentous; it grows tubular, elongated, and thread-like. It can be considered a contaminant.