Conidium (pl. Conidia)

Asexual reproductive structure of fungi. Conidia can form directly on the hyphae or the conidiophore. Conidia are borne externally (as opposed to being enclosed within a sporangium). If a fungus produces 2 types of conidia, the smaller single celled conidia are called microconidia. The larger conidia may be segmented, and are referred to as macroconidia.