The following is a list of diseases of pears (Pyrus communis).
Alternaria spp.
Pezicula malicorticus
Cryptosporiopsis curvispora [anamorph]
Armillaria mellea
Rhizomorpha subcorticalis [anamorph]
Glomerella cingulata
Colletotrichum gloeosporioides [anamorph]
Botryosphaeria obtusa
Sphaeropsis malorum [anamorph]
Penicillium spp.
Penicillium expansum
Botrytis cinerea
Botryotinia fuckeliana [teleomorph]
Monilinia fructicola
Monilinia laxa
Cladosporium herbarum
Mycosphaerella tassiana [teleomorph]
Rosellinia necatrix
Dematophora necatrix [anamorph]