Amphidoxa villosa O.Hoffm. accepted as Artemisiopsis villosa (O.Hoffm.) Schweick. (original description)
Bidens hildebrandtii O.Hoffm. (original description)
Conyza pulsatilloides O.Hoffm. (original description)
Conyza spartioides O.Hoffm. accepted as Nidorella spartioides (O.Hoffm.) Cronquist (original description)
Conyza subscaposa O.Hoffm. (original description)
Conyza volkensii O.Hoffm. accepted as Conyza steudelii Sch.Bip. ex A.Rich. (original description)
Coreopsis kilimandscharica O.Hoffm. accepted as Bidens kilimandscharica (O.Hoffm.) Sherff (original description)
Helichrysum engleri O.Hoffm. accepted as Helichrysum odoratissimum (L.) Sweet (original description)
Helichrysum stuhlmannii O.Hoffm. (original description)
Lupsia lehmannii Hieron. (original description)
Microglossa hildebrandtii O.Hoffm. (original description)
Microglossa parvifolia O.Hoffm. accepted as Conyza pyrrhopappa Sch.Bip. ex A.Rich. (original description)
Pluchea nitens O.Hoffm. accepted as Nicolasia nitens var. nitens (O.Hoffm.) Eyles (original description)
Polycline stuhlmannii O.Hoffm. accepted as Athroisma stuhlmannii (O.Hoffm.) Mattf. (original description)
Psiadia inuloides O.Hoffm. accepted as Conyza vernonioides (Sch.Bip. ex A.Rich.) Wild (original description)
Senecio cyaneus O.Hoffm. (original description)
Senecio sarmentosus O.Hoffm. accepted as Senecio deltoideus Less. (original description)
Senecio syringifolius O.Hoffm. (original description)
Senecio ukambensis O.Hoffm. accepted as Emilia ukambensis (O.Hoffm.) C.Jeffrey (original description)
Sphaeranthus angolensis O.Hoffm. (original description)
Sphaeranthus cyathuloides O.Hoffm. accepted as Sphaeranthus kirkii var. cyathuloides (O.Hoffm.) Beentje (original description)
Sphaeranthus fischeri O.Hoffm. (original description)
Sphaeranthus gomphrenoides O.Hoffm. accepted as Sphaeranthus steetzii Oliv. & Hiern (original description)
Sphaeranthus stuhlmannii O.Hoffm. (original description)
Sphaeranthus ukambensis Vatke & O.Hoffm. (original description)
Triplocephalum O.Hoffm. (original description)
Triplocephalum holstii O.Hoffm. (original description)
Vernonia abbotiana O.Hoffm. (original description)
Vernonia fischeri O.Hoffm. (original description)
Vernonia holstii O.Hoffm. (original description)
Vernonia poggeana O.Hoffm. (original description)
Vernonia usambarensis O.Hoffm. (original description)
Volkensia O.Hoffm. accepted as Bothriocline Oliv. ex Benth. (original description)
Volkensia argentea O.Hoffm. accepted as Bothriocline argentea (O.Hoffm.) Wild & G.V.Pope (original description)