Helichrysum cremnophilum subsp. triplinervoides Humbert (original description)
Senecio cochlearifolius var. australis Humbert accepted as Senecio multibracteatus Baker accepted as Senecio pleistophyllus C.Jeffrey (original description)
Senecio exsertus var. abbreviatus Humbert (original description)
Senecio exsertus var. angustifolius Humbert (original description)
Senecio exsertus var. diffusus Humbert accepted as Senecio volutus (Baker) Humbert accepted as Senecio leucopappus var. volutus (Baker) Humbert (original description)
Senecio gossypinus var. antanosy Humbert (original description)
Senecio leucopappus var. austro-orientalis Humbert (original description)
Senecio leucopappus var. hederifolius Humbert (original description)
Senecio petitianus subvar. discoideus Humbert (original description)
Vernonia alleizettei var. hirtella Humbert (original description)
Vernonia alleizettei var. moramangensis (Humbert) Humbert (original description)
Vernonia alleizettei var. rienanensis Humbert (original description)