(Ptilium) (Ptilium) is a biological genus in the family Hypnaceae and order Hypnales.
Ptilium crista-castrensis
Bryocrumia
Buckiella
Chryso-hypnum
Ctenidium
Dacryophyllum
Gollania
Herzogiella
Hypnum
Isopterygiopsis
Isopterygium
Orthothecium
Platygyrium
Pseudotaxiphyllum
Ptilium