Histopathological aspects of orange and guava are studied. The rotten orange pericarp shows distorted epidermis. The outer pericarp cell layers show spores of pathogenic fungi. The general cellular organisation is disturbed. Oil ducts get collapsed and the lignin deposits on the walls of tracheids are degenerated. In guava, small and large cavities are formed in the outer pericarp. The most interesting feature was the presence of very thick-walled sclereids in the pulp of rotten guava.