]> GH barcode-00971912 Mexico Chihuahua Road from Castillon to Mula, via S. Salvador and Piramide; near Virulento (16 miles south of Trencheras) Hedeoma hyssopifolium var. chihuahuensis Henrickson Henrickson 2022-03-15 06:24:03 I. M. Johnston & C. H. Muller