]> GH barcode-01987606 Mexico Hidalgo District: Actopan. Municipality: El Arenal. Summit of red sandstone peak, Cerro de las Canteras, west of hgihway at Km 104 south of Actopan Echeveria halbingeri E. Walther E. Walther 2019-04-11 18:31:03 H. E. Moore, Jr.