Hot and cold: medicinal plant uses in Quechua speaking communities in the high Andes (Callejón de Huaylas, Ancash, Perú).

Ethno-pharmacological Relevance: An ethnopharmacological survey has been set up in high altitude Quechua speaking communities dwelling in Callejón de Huaylas (Ancash department, Peru) and in medicinal plant markets in order to document the medicinal plants use of 178 species within the frame of a traditional Andean medicinal system.

Materials And Methods: A sound ethnopharmacological survey was performed during the years 2011, 2012 and 2013 in different places along Callejón de Huaylas valley in the peruvian Andes, were Quechua speaking communities dwell. Two different methodologies were used: first, plant uses were recorded during walks with informants and in medicinal plant markets held on a regular bases in the area (Huaraz, Carhuaz, Yungay).