Helichrysum decaryi Humbert (original description)
Helichrysum mangorense Humbert (original description)
Vernonia ambongensis Humbert (original description)
Vernonia decaryana Humbert (original description)
Vernonia isalensis Humbert (original description)
Vernonia lecomtei Humbert (original description)
Vernonia mangokensis Humbert accepted as Distephanus mangokensis (Humbert) H.Rob. & B.Kahn (original description)
Vernonia pellegrinii Humbert (original description)
Vernonia rochonioides Humbert (original description)