Physalospora obtusa (Schw.) Cke.
Black rot is of minor importance on quinces. Fruit infections usually occur at the calyx end or at insect injuries and other wounds. The rot is firm, sometimes slightly spongy, and brown, the color darkening with increasing size and age of the lesion. The small, black, pimple-like fruiting bodies of the black rot fungus do not appear on the surface until the decay is well advanced (see Apples, Black Rot).
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