Local plant knowledge and its variation among farmer's families in the Napf region, Switzerland.

Background: Local plant knowledge typically is unevenly distributed within a community. This knowledge variation is important in understanding people's relationship with their environment. Here we ask about knowledge variation among farmers' families in the Napf region of Switzerland.

Folkbotanical classification: morphological, ecological and utilitarian characterization of plants in the Napf region, Switzerland.

Background: Discussions surrounding ethnobiological classification have been broad and diverse. One of the recurring questions is whether classification is mainly based on the "inherent structure of biological reality" or on cultural, especially utilitarian needs. So far, studies about ethnobotanical classification have mainly been done in indigenous societies.