Five septins are found in A. nidulans (AnAspAp, AnAspBp, AnAspCp, AnAspDp, AnAspEp). AnAspBp forms single rings at septation sites that eventually split into double rings.
In A. nidulans, multiple septins are identified (AnAspAp, AnAspBp, AnAspCp, AnAspDp, AnAspEp). AnAspBp generates single rings at septation sites that eventually bifurcate into double rings.