Rhizopus stolonifer (Ehrenb.:Fr.) Vuill.
Rotted fruit appears similar to brown rot, but is slightly darker.
Norman Lalancette, Rutgers Univ.
Although the rot is predominantly a postharvest problem, symptoms may also develop in the field. Rotted fruit appears similar to brown rot, but Rhizopus-affected fruit appears slightly darker, the skin may slip away from decaying flesh underneath, or the fruit may be very leaky. Visible fungal mycelium may be white and fluffy, appearing like whiskers when the fungus sporulates. Infected fruit lying on the orchard floor or in packaged containers will often be engulfed by the fungus, appearing fluffy, with the fungus appearing to turning from gray to black as the fruiting bodies of the fungus develop at the tips of the "whiskers" (A, B).