CIIDIR Unidad Durango, Instituto Politécnico Nacional Herbario

CIIDIR Unidad Durango, Instituto Politécnico Nacional Herbario was founded in 1981. Its collection consists of 61,000 specimens. It specializes in vascular plants of Mexico, mainly Durango and Sierra Madre Occidental.

Since 2005 the collection is named "Prof. Graciela Calderon Diaz-Barriga and Dr. Jerzy Rzedowski Rotter" in honor of two renowned Mexican botanists and polytechnic graduates who have supported the development of this and other botanical collections in the country.

Materials contributed by CIIDIR Unidad Durango, Instituto Politécnico Nacional Herbario (CIIDIR):

• Specimens