CHAMAEIRIS, AN EARLIER NAME FOR XYRIDION (IRIDOIDEAE, IRIDACEAE)

has priority over Xyridion (Tausch) Fourr., a genus name that has been recently rein-stated in a sense that matches Medikus’s original concept of Chamaeiris. A new ar-rangement is presented for this genus, which comprises 22 species, 3 subspecies and 2 varieties, in two sections and three series. 28 new combinations are stated, and the main synonymy is also included for all accepted taxa. Key words: Chamaeiris, Xyrid-ion, Spathula, Iris, nomenclature, taxonomy