]> A barcode-00246644 Mexico Chihuahua Canon de la Madera, southeastern flank of Sierra Rica, north of Rancho de la Madera. Oak-Pinyon Belt. (3 km. up the canyon) Croton pottsii (Klotzsch) Müller Argoviensis (Klotzsch) Müller Argoviensis 2010-08-16 16:39:18 R. M. Stewart