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Pakpak is one of the subethnic groups in North Sumatera that still uses many medicinal plants, especially the people in Sitellu Tali Urang Jahe. The aim of the study was to find out the types of plants used in medicine, to find out the organs of plants used for treatment, to find out how to use plants for treatment, to know the cultural significance of ICS which are used as medicinal plants by the people of Sitellu Tali Urang Jehe sub-district, Pakpak Bharat district. This research method was conducted using qualitative and quantitative methods. Qualitative research was carried out by participatory observation using literature and community knowledge about medicinal plants, while quantitative research was carried out by calculating the percentage of plant species, plant organs and calculating the value of the Cultural Significance Index (ICS). Based on the research results obtained 30 species of plants belonging to 21 families. Plant organs used as medicine are leaves 57%, stems 12%, flowers 9%, rhizomes 9%, roots 3% and fruit 3%. Utilization of plants as medicine, namely by drinking 48%, taped 48%, and dripped 3%. The Calculation of the ICS value of Piper betle L. has the highest preference or importance value among other plants, namely 50, while Alyxia sp., Ageratum conyzoides L., Angiopteris angustifolia, Cheilocostus speciousus, Cnidoscolus aconitifolius, Crassocephalum crepidioides, Crotasaria pallida, Desmodium heterophyllum, Impatiens platypetala, Oxalis barrelieri, Polygala paniculata, has the lowest importance value among other plants, namely 3.
Tarigan et al. (Sun,) studied this question.