Aster chrysogonii Sennen accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom (original description)
Carthamus vinyalsii Sennen (original description)
Centaurea aurigerana Sennen (original description)
Centaurea degenii Sennen accepted as Centaurea resupinata subsp. degenii (Sennen) Fern.Casas & Susanna (original description)
Erigeron nevadensis Sennen (original description)
Erigeron queraltii Sennen (original description)
Erigeron verguinii Sennen (original description)
Hieracium hieronymi Sennen accepted as Hieracium granatense Arv.-Touv. & Gaut. (original description)
Leucanthemum aemilianii Sennen (original description)
Leucanthemum cantabricum Sennen accepted as Leucanthemum ircutianum subsp. cantabricum (Sennen) Vogt (original description)
Sonchus toletanus Sennen (original description)
Taraxacum toletanum Sennen (original description)
Xanthium microcarpum Sennen (original description)