]> GH barcode-00093522 Mexico Chihuahua 12 miles south of Ojinaga. Along road from Ojinaga to Castillon, Coah., via La Mula, Trincheras, Piramide and San Salvador. Phacelia petiolata I. M. Johnston I. M. Johnston 2010-08-16 16:38:29 I. M. Johnston