Dr. D. Darnaedi (BO) and an M.Sc. student are carrying out a fern floristic study in the Gunung Halimun National Park with the aim to write a popular field guide. Cytological work on dryopteroid ferns in the Gedeh Pangrango National Park has been carried out by Dr. D. Darnaedi (BO) and an M. Sc. student. Preliminary studies demonstrated the polyploidy occurring there.