Contains taxonomic revisions of seven families of Fems and Fern allies for Malesia, i. e. the area covering the countries Indonesia, Malaysia, Brunei Darussalam, Singapore, the Philippines, and Papua New Guinea. Covered are the families Polypodiaceae, Davalliaceae, Azollaceae, Cheiropleuriaceae, Equisetaceae , Matoniaceae, and Plagiogyriaceae