Dielsia
Dielsia is a genus of flowering plant, described in 1904, in the family Restionaceae. There is only one known species, Dielsia stenostachya, endemic to Southwest Australia.
;Species in homonymic genus
In 1929, Kudô used the name Dielsia in reference to a plant in the Lamiaceae, thus creating an illegitimate homonym. He also created one species in his genus, i.e.
- Dielsia oreophila Kudô, syn of Isodon oreophilus A.J.Paton & Ryding