Nomenclatural notes on species of the genus Arenaria (Caryophyllaceae) in Chile

A nomenclatural study of the Arenaria names referring to the species found in Chile is presented. Three names, A. fastigiata, A. multicaulis, and A. scopulorum, are illegitimate (Arts. 53.1 and 52.1 of ICN); a new name is proposed for A. fastigiata and A. multicaulis; A. scopulorum was also nomenclaturally superfluous including the type of A. digyna (Art. 52.1 of the ICN). Arenaria digyna, A. microphylla, A. oligosperma, A. pleurantha, and A. rivularis are lectotypified, based on specimens preserved at E, HAL, K, P, and SGO (isolectotypes at B, K, P, and SGO). One epitype (at SI) was designated for A. rivularis.