Macrothelypteris, Genus
Malaifilix, Genus
Mankyua, Genus
Marattia, Genus
Marsilea, Genus
Matonia, Genus
Matteuccia, Genus
Maxonia, Genus
Megalastrum, Genus
Melpomene, Genus
Meniscium, Genus
Menisorus, Genus
Mesophlebion, Genus
Mesopteris, Genus
Metathelypteris, Genus
Metaxya, Genus
Mickelia, Genus
Microgramma, Genus
Microlepia, Genus
Micropolypodium, Genus
Microsorum, Genus
Mildella, Genus
Monachosorum, Genus
Moranopteris, Genus
Mycopteris, Genus
Myriopteris, Genus