| Microscopically, thin branching hyphae with pyriform conidia can be seen. |
| Fungi of this genus produce characteristic darkly pigmented, septate hyphae or conidia. |
| The phialides produce chains of uninucleate conidia after repeated mitotic division and cytokinesis. |
| Microscopically, the fungus produces solitary oval to dumbbell-shaped conidia on short, unbranched conidiophores lateral to septate hyphae. |
| This process terminates in the production of asexual spores, the uninucleate conidia. |
| Some fumigants can work as an activator by triggering the development of dormant conidia. |
