Keissleriella is a genus of fungi, that was originally placed in the Massarinaceae family, before being placed in the Lentitheciaceae family.
The genus was circumscribed by Franz Xaver Rudolf von Höhnel in 1919, and was named in honour of Karl von Keissler (1872-1965), who was an Austrian lichenologist and mycologist.
As accepted by Species Fungorum;
Former species;