Thelocephala riparia (Mächler & Helmut Walter) Faúndez & Saldivia in Gayana, Bot. 68(2): 317. 2011 Thelocephala riparia (Mächler & Helmut Walter) Faúndez & Saldivia in Gayana, Bot. 68(2): 317. 2011is new combination for Eriosyce napina subsp. riparia Mächler & Helmut Walter in Cact. World 24: 142. 2006Taxon for this nameThelocephala riparia (Mächler & Helmut Walter) Faúndez & Saldivia