What is "porphyrostemma"

Porphyrostemma is a genus of African plants in the Irish fleabane tribe within the daisy family.

1. Porphyrostemma chevalieri (O.Hoffm.) Hutch. & Dalziel
2. Porphyrostemma grantii Benth. ex Oliv.
3. Porphyrostemma monocephala Leins

see Inula

• Porphyrostemma cuanzensis (Welw.) O.Hoffm. - Inula cuanzensis (Welw.) Hiern