Echinofossulocactus obvallatus (DC.) Lawr. in Gard. Mag. (London) 17: 317. 1841 Echinofossulocactus obvallatus (DC.) Lawr. in Gard. Mag. (London) 17: 317. 1841Taxon for this nameEchinofossulocactus obvallatus (DC.) Lawr.