Nomenclatural Notes on Allium atroviolaceum (Amaryllidaceae) from Iran

Allium is one of the largest genera of the family Amaryllidaceae which is approximately distributed in all parts of the world. Iran is one of the main centers of diversity of the genus Allium and 7 subgenera and 30 sections are considered from this genus for the flora of Iran. In spite of taxonomic and phylogenetic studies, there are a few nomenclature studies regarding the genus Allium. The present study is the result of the exact checking of the species Allium with the International Code of Nomenclature. It was established that Allium atroviolaceum Boiss. (1846) is an illegitimate name as a later homonym of Allium atroviolaceum Hornem. ex Steud. (1840). So, the name Allium sehat-niakii Negaresh nom nov. is proposed here as a replacement name for Allium atroviolaceum Boiss. Also, a note about the previous typifications of Allium atroviolaceum is presented. In addition, it is indicated that Allium atroviolaceum var. angustifolium Boiss. is a forgotten taxon for Iranian flora and it is treated in this study as an existing taxon with the new combination (i.e. Allium sehat-niakii var. angustifolium (Boiss.) Negaresh) for the flora of Iran.