Necrosis appears as bronze-colored areas of cellular necrosis. These areas are neither sunken nor sharply delimited. Old leaflet margins are not usually rolled upward. Veinal necrosis is not present. Petioles and petiolules do not show abrupt downward bending . . . . .
Leaves show no excessive wilting except in cases of petiole necrosis.
Wilting, if present, is not confined to leaflet tips and margins. This is often accompanied by the appearance of water-soaked areas on the back of the leaves. Necrosis usually appears as irregular spots which may or may not have any particular relationship to veins . . . . . Zn Further reading Hinkle, P.C., and R.E. McCarty. Salisbury, F.B. and C.W. Ross.