The main collection consists of about 290,000 herbarium specimens, over 120,000 duplicate sheets used for trade, exsiccatas etc.

Other collections of vascular plants Apart from the main herbarium of vascular plants, some collections are deposited as herbarium P. Chevassus, previously deposited in an herbarium downtown Aula Dei in Zaragoza, including the herbarium of Dr. Teresa Tarazona plants Burgos and surrounding areas. In addition, pending the herbarium of intercalation Albarracín hired recently by the author Dr. Ildefonso Barrera.