These are observable by tearing a mature leaf lamina and looking for 'hairs' protruding from the damaged edges.
All genera have spadices bearing bisexual naked flowers.
Often the lower and uppermost flowers in a spadix are sterile and different in appearance. Lower sterile flowers are usually larger and free while those at the spadix tip are often smaller and partially fused to adjacent sterile flowers. In neotropical Monstera Adans. They perhaps function similarly in Asian genera. When the infructescence is ripe the styles adhere to one-another and fall as irregular plates to expose the ovary cavity with the seed embedded in copious, variously coloured pulp.