The Spanish botanist Jos? Planellas Giralt (1820?1888) studied the Galician flora intensely between 1847 and 1868, when he was professor of Botany at the University of Santiago de Compostela. His herbarium was the basis for his major botanical contribution: Ensayo de una flora fanerog?mica gallega, the first pharmacological Galician flora. When Planellas moved to Barcelona in 1868, he brought with him the main part of his herbarium, which is now housed in BCN.The Planellas herbarium includes 2,483 specimens, of which 1,654 have locality data. The Planellas?s herbarium contains specimens of 1.922 taxa at specific or infraspecific level (subspecies) belonging to 835 genera in 142 families. The most abundant families are Asteraceae, Poaceae and Lamiaceae. The specimens were manly from Galicia, in Spain. Moreover, this herbarium contains plants from other countries, mainly Germany and France, that have handwritten labels written by Willkomm with whom Planellas appears to have maintained specimen exchange. Most of the samples were collected before 1852, when he was a professor at the University of Santiago de Compostela. This herbarium houses the specimens that served as the basis for the preparation of the first systematic flora of Galicia (Spain), including nine types.