This name is a synonym of Kleinia abyssinica (A.Rich.) A.Berger.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4C420E61-4C1C-4AAA-8799-EDB8F546378C).
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Senecio nyikensis in version 1 of The Plant List.