In the presence of predisposition factors like the presence of other diseases, obesity, use of broad spectrum antibiotics and steroids, this fungus can cause a disease known as candidiasis. Examine cultures of Candida spp. In this form-class, the conidiophores are borne in a fruiting body. There are two form-orders in this class, depending on what kind of fruiting body is produced. This order includes members which have conidiophores produced in an acervulus.
Many members are parasitic on plants and cause a group of diseases called anthracnoses.
Since an acervulus forms by eruption of the fungus through the host epidermis, it does not form in culture. There is a single family, the Melanconiaceae. Colletotrichum - This genus typically forms hyphal clumps from which stiff, tapering, dark brown setae arise. The conidia are hyaline amerospores, and are either curved or straight, depending upon the species. Mount a portion of a colony of Colletotrichum sp. in water and look for setae, conidiophores, and conidia under the microscope.