Phaeoptilum spinosum Radlk. in Abh. Naturwiss. Vereins Bremen 8: 436. 1883 Phaeoptilum spinosum Radlk. in Abh. Naturwiss. Vereins Bremen 8: 436. 1883is basionym for Nachtigalia protectorata Schinz in Bot. Jahrb. Syst. 19: 133. 1894This name is not assigned to any taxon.