We formally describe Echeveria coppii Moran ex Gideon F.Sm. & Bischofberger (Crassulaceae), from Sinaloa, Mexico, a species that was known to both Reid V. Moran and Charles H. Uhl, two students of the Crassulaceae. Already 50 years ago Moran prepared a specimen and produced a description of this plant but never published it. Echeveria coppii has its elliptic-lanceolate to oblong leaves arranged in rosettes carried at the apex of stems that can reach a length of 60cm. The species has red flowers and the leaves are reddish brown. Along with only two other species, E. affinis E.Walther and E. craigiana E.Walther, E. coppii belongs in E. ser. Occidentales Moran.