Apodocephala begueana Humbert (original description)
Apodocephala urschiana Humbert (original description)
Aspilia rugulosa Humbert (original description)
Chrysogonum leandrii Humbert (original description)
Chrysogonum madagascariense Humbert (original description)
Chrysogonum stenocephalum Humbert (original description)
Conyza mandrarensis Humbert (original description)
Emilia bathiei Humbert (original description)
Emilia serrata Humbert (original description)
Espeletia humbertii Cuatrec. accepted as Espeletia occulta S.F.Blake (original description)
Gynura manampanihensis Humbert accepted as Crassocephalum manampanihense (Humbert) Humbert (original description)
Helichrysum abbayesii Humbert (original description)
Helichrysum ambositrense Humbert (original description)
Helichrysum coursii Humbert (original description)
Helichrysum cremnophilum Humbert (original description)
Helichrysum indutum Humbert (original description)
Helichrysum itremense Humbert (original description)
Helichrysum saboureaui Humbert (original description)
Mikania badieri f. broadwayana Stehlé (original description)
Mikania badieri f. kittsiana (Urb.) Stehlé (original description)
Mollera madagascariensis Humbert accepted as Calostephane madagascariensis (Humbert) Anderb. (original description)
Oliganthes tsaratananensis Humbert (original description)
Psiadia dimorpha Humbert (original description)
Psiadia godotiana Humbert (original description)
Psiadia vestita Humbert (original description)
Rochonia antandroy Humbert (original description)
Senecio adenostylifolius Humbert (original description)
Senecio alleizettei (Humbert) Humbert (original description)
Senecio leandrii Humbert (original description)
Senecio marojejyensis Humbert (original description)
Senecio multidenticulatus Humbert (original description)
Senecio neoalleizettei Humbert accepted as Humbertacalia neoalleizettei (Humbert) C.Jeffrey (original description)
Senecio neoheimii Humbert accepted as Hubertia neoheimii (Humbert) C.Jeffrey (original description)
Senecio nigrostagnosus Cuatrec. accepted as Pentacalia nigrostagnosa (Cuatrec.) Cuatrec. (original description)
Senecio tsimihety Humbert accepted as Hubertia tsimihety (Humbert) C.Jeffrey (original description)
Vernonia alleizettei Humbert (original description)
Vernonia betsimisaraka Humbert (original description)
Vernonia calerana Cuatrec. accepted as Critoniopsis calerana (Cuatrec.) H.Rob. (original description)
Vernonia humillima Humbert (original description)
Vernonia louvelii Humbert accepted as Gymnanthemum louvelii (Humbert) H.Rob. (original description)
Vernonia neocoursiana Humbert (original description)
Vernonia neoperrieriana Humbert (original description)
Vernonia sakalava Humbert (original description)
Vernonia sambiranensis (Humbert) Humbert (original description)