Conyza longipedunculata Klatt (original description)
Conyza miniata Klatt accepted as Psiadia leucophylla (Baker) Humbert (original description)
Gnaphalium pterigoideum Klatt accepted as Helichrysum mutisiaefolium Less. (original description)
Helichrysum betsiliense Klatt (original description)
Psiadia decurrens Klatt accepted as Psiadia altissima var. decurrens (Klatt) Humbert (original description)
Psiadia tortuosa Klatt accepted as Psiadia madagascariensis (Lam.) DC. (original description)
Senecio apricus Klatt accepted as Senecio erechtitioides Baker (original description)
Senecio calamitosus Klatt accepted as Senecio erechtitioides Baker (original description)
Senecio drepanophyllus Klatt accepted as Senecio emirnensis subsp. angavonensis (Bojer ex DC.) Humbert accepted as Senecio emirnensis var. angavonensis (Bojer ex DC.) Humbert (original description)
Senecio grenierii Klatt accepted as Senecio erechtitioides Baker (original description)
Senecio hygrophilus Klatt accepted as Cineraria anampoza f. hygrophila (Klatt) Cron (original description)
Senecio margaritiferus Klatt (original description)
Senecio myrtifolius Klatt accepted as Hubertia myrtifolia (Klatt) C.Jeffrey (original description)
Senecio parochetus Klatt accepted as Senecio faujasioides Baker (original description)
Senecio petrophilus Klatt accepted as Senecio canaliculatus Bojer ex DC. (original description)
Vernonia rivularis Klatt (original description)