The Diversity Species of Medicinal Plants in The Martelu Purba Nature Reserve, North Sumatra

Indonesia was known as a country that has high biodiversity, some of them are various types medicinal plants. Since the first, Indonesian people have used plants in traditional medicine. This research conducted Martelu Purba Nature Reserve (MPNR), District, Simalungun Regency, North Sumatra. MPNR is nature reserve consisting However, information on this area rarely documented even though they meaningful contribution medical treatments for indigenous communities. study aims to identify all plant species found MPNR. method carried out by exploring key informants, namely manager and local community. Determination number respondents done snowball sampling method. The results showed there were 44 33 families, where most families from Arecaceae family, which 17.24%. Based habitus, consist 20 tree (45.45%), 13 herb (29.54%), 5 palm (11.36%), 4 shrub (9.09 %), 2 epiphytes (4,54%). intended use fever, cough, diarrhea, diabetes, wounds, asthma, malaria, others. part been used, 19 leaves (42.22%), 7 fruit/seed (15.90%), 6 parts (13.63%), bark roots (4.54%), 1 resin (9.09%), flower seeds wood (9 .09%), (9.09%). Medicinal must be conserved maintain their sustainability can sustainably.