Specialised herbaria are also preserved in Angers, including one of the most important bathology collections (herbaria of the genus "Rubus") in Europe. A seed library is made up, on one hand, of pedagogical samples (about French and 200 tropical species) and, on the other hand, the Vilmorin collection of early 20th century tree seeds, with additions from the National Museum and from Roland Bonaparte (approximately 1,100 samples). The xylotheque, also made up of two parts, comprises wood specimens from trees from the Jardin des Plantes and the Gaston-Allard Arboretum, both in Angers, as well as a collection of 69 samples of French Guyanese precious woods collected in 1802.