]> A barcode-00022339 Mexico Coahuila Head of La Pipa Fork of Charretera Canyon, Sierra de la Madera, high crest of main ridge about 2 km. east of Picacho de Zozaya, shaded damp cool north slope Abies coahuilensis I. M. Johnston I. M. Johnston 2010-08-16 16:41:38 I. M. Johnston