Fuertesimalva Fryxell (1996): All species of Urocarpidium except U. albiflora are now in Fuertesimalva., Sphaeralcea A. St.-Hil. (1825): U. albiflora has been considered to be a synonym of Sphaeralcea arequipensis (Ulbr.) Krapov and Sphaeralcea weberbaueri Krapov., Malvastrum A. Gray (1849): U. albiflora has been considered to be a synonym of Malvastrum arequipense I.M. Johnst.