An ethnobotanical survey was carried out in the River Tenes valley, in an area of 260 km2 not far from the city of Barcelona. Although this setting might suggest that the area was unsuitable for research of this kind, the variety of microclimates--which implies a rich flora--and the existence of small villages and isolated houses made it possible to obtain valuable information. We obtained data on 209 species belonging to 60 families and here we present our findings on the properties, preparations and uses.