Onopordum setense Arènes (original description)
Psiadia decaryi Humbert (original description)
Psiadia flavocinerea Humbert (original description)
Psiadia inaequidentata Humbert (original description)
Psiadia quartziticola Humbert (original description)
Psiadia tanala Humbert (original description)
Senecio boiteaui Humbert (original description)
Senecio navicularis Humbert (original description)
Senecio quartziticola Humbert (original description)