Typification of names of taxa in Ornithogalum L. subg. Cathissa (Salisb.) Baker ( Hyacinthaceae )

Notes on the taxonomy and nomenclature of Ornithogalum subg. Cathissa (Salisb.) Baker (≡ Cathissa Salisb.) are presented. This group includes three species described from the western Iberian Peninsula and northern Morocco ( O . broteroi M. Laínz, O . concinnum Salisb., O . reverchonii Lange), with spicate to subspicate inflorescences and corolla segments lacking conspicuous green stripes on the reverse surface. The accepted taxa are listed with their synonyms and types are indicated for all the names involved, including the designation of a neotype for O . concinnum and a lectotype for O . reverchonii . Short diagnoses are provided for accepted taxa to facilitate identification.