Cineraria anampoza subvar. hygrophila (Klatt) Humbert accepted as Cineraria anampoza f. hygrophila (Klatt) Cron (original description)
Emilia crepidioides var. arenicola Humbert (original description)
Exomiocarpon madagascariense var. sambiranense Humbert (original description)
Gerbera diversifolia var. tsaratananensis Humbert (original description)
Senecio emirnensis subsp. angavonensis (Bojer ex DC.) Humbert accepted as Senecio emirnensis var. angavonensis (Bojer ex DC.) Humbert (original description)
Senecio emirnensis subsp. tanala Humbert (original description)
Senecio marojejyensis var. latilimbus (Humbert) Humbert (original description)
Senecio myrtifolius subsp. neocoursii Humbert (original description)
Senecio perrieri subsp. ankaratrensis Humbert (original description)
Senecio perrieri subsp. comorensis Humbert (original description)
Senecio volutus (Baker) Humbert accepted as Senecio leucopappus var. volutus (Baker) Humbert (original description)
Sonchus gigas subsp. medius Boulos (original description)
Wedelia madagascariensis Humbert (original description)