Helichrysum achryroclinoides var. bicolor Humbert (original description)
Helichrysum neoachyroclinoides Humbert (original description)
Helichrysum neoachyroclinoides var. tsaratananae Humbert (original description)
Vernonia antanala subsp. moramangensis Humbert accepted as Vernonia alleizettei var. moramangensis (Humbert) Humbert (original description)
Vernonia exserta var. ivohibeensis Humbert accepted as Vernonia hispidula var. ivohibeensis (Humbert) Humbert (original description)
Vernonia homolleae Humbert (original description)
Vernonia leandrii subsp. sambiranensis Humbert accepted as Vernonia sambiranensis (Humbert) Humbert (original description)
Vernonia mecistophylla var. latisquamata Humbert accepted as Vernonia latisquamata (Humbert) Humbert (original description)