There were 2 illustrations found for R. Cárdenas Soriano
2 421393 Euphorbia derickii V.W.Steinm.Novon, vol. 15 : p. 215 (2005) [R. Cárdenas Soriano]
2 1013493 Thompsonella garcia-mendozae P.Carrillo & Pérez-CalixNovon, vol. 16 : p. 321, fig. 1 (2006) [R. Cárdenas Soriano]