STOMATAL STRUCTURE IN RELATION TO AGEING OF LEAVES IN CALOTROPIS PROCERA (AIT.) BR.

Paper presents the first hand observations on the stomatal structure in relation to the ageing of leaves of Calotropis procera (Ait) Br. (Asclepiadaceae). In older leaves thick cuticular wrinkles develop around the guard cells and the scars of glandular hair bases. Detailed structure of stomata in young, mature and old leaves and their bearing on the physiology of plants has been discussed.