rhizopus nigricans(n = noun.plant) bread mold - a mold of the genus Rhizopus;
is a kind of rhizopus
is a member of genus rhizopus

acanthosis nigricans, genus rhizopus, hirundo nigricans, hypentelium nigricans, keratosis nigricans, makaira nigricans, rhizopus, rhizopus stolonifer