The fungi include a variety of general forms–yeast, mold, mushrooms, and imperfect fungi. They reproduce in a variety of ways – by a bud arising from a parent yeast cell, by the addition of a vegetative cell to chains of cells called hyphae, and by the production of both asexual and sexual spores.
Although fungi form both asexual and sexual spores, they are classified based on the type of sexual spore they form.
Penicillium is best known for its production of the antibiotic penicillin. Asexual reproduction occurs with a fruiting body, which consists of conidia containing spherical conidiospores in chains at the end of elongated branching cells.