Studies on pharmaceutical ethnobotany in the region of Pallars (Pyrenees, Catalonia, Iberian Peninsula). Part I. General results and new or very rare medicinal plants.

An ethnobotanical survey was carried out in the region called Pallars--constituted by two districts, Pallars Sobirà and Pallars Jussà--situated in the Central Pyrenees, in North West Catalonia (Iberian Peninsula), with an approximate area of 2530 km(2) and a population of 19000. We obtained data on 437 plant species used for health care through interviews with 264 people. We detected 867 unreported or uncommon uses corresponding to 272 plant species, 52 of which had never or very rarely been cited as medicinal. To present the most important findings concerning the ethnopharmacology of the area studied, this first part includes the general results and the new or very scarcely reported medicinal vascular plants. Further papers will deal with unreported or very uncommon uses for known medicinal plant species and with medicinal non-vascular plants.