Penicillium notatum is what type of organism?

Penicillium notatum is a fungi.

Penicillium is a genus of ascomycetous fungi which has a major importance in the natural environmen. It plays an important role in food and drug production as well. Some members of the said genus produce penicillin, a molecule that is used as an antibiotic. These antibiotics kill or stop the growth of certain kinds of bacteria inside the body.