The Sinfonevada database is a forest inventory that contains information on the forest ecosystem in Sierra Nevada mountains (SE Spain). The Sinfonevada dataset contains more than 7,500 occurrence records belonging to 270 taxa (15 of them are threatened) from floristic inventories of the Sinfonevada Forest inventory. Expert field workers collected the information. The whole dataset suffered a quality control executed by botanists with wide expertise in Sierra Nevada flora. This floristic inventory was created to gather information useful to properly manage Pinus plantations in Sierra Nevada. This is the only dataset that shows a comprehensive view of the forest flora in Sierra Nevada. This is the reason why it is being used to assess biodiversity in the very dense pine plantations existing in Sierra Nevada. Thanks to this dataset, managers have improved their ability to decide where execute forest treatments avoiding biodiversity loss. The dataset is integrated in the Sierra Nevada Global Change Observatory (OBSNEV), a long-term research project designed to compile socio-ecological information on the major ecosystem types in order to identify the impacts of global change in this area.