This study was carried out to investigate the vascular plants of the protected area for forest genetic resource conservation in the Korea national Baekdudaegan arboretum. The vascular plants collected 12 times (from April 2007 to August 2014) were consisted of total 569 taxa; 89 families, 289 genera, 489 species, 5 subspecies, 66 varieties and 9 forms respectively. The 20 taxa of Korean endemic plants and 21 taxa of Korean rare plants were investigated. The floristic regional indicator plants found in this area were 112 taxa comprising 2 taxa of grade Ⅴ, 8 taxa of grade Ⅳ, 23 taxa of grade Ⅲ, 40 taxa of grade Ⅱ, 39 taxa of grade Ⅰ. The introduced and naturalized plants were counted as 22 taxa, therefore naturalized ratio was 3.8%. 577 taxa listed consists of 223 taxa (39.2%) of edible plants, 168 taxa (29.5%) of medicinal plants, 202 taxa (35.5%) of pasture plants, 58 taxa (10.2%) of ornamental plants, 26 taxa (4.6%) of timber plants, 5 taxa (0.9%) of fiber plants and 4 taxa (0.7%) of industrial plants.

• 변준기(국립수목원 산림자원보존과) | Jun Gi Byeon (Division of Plant Conservation, Korea National Arboretum)
• 신재권(국립수목원 산림자원보존과) | Jae Kwon Shin (Division of Plant Conservation, Korea National Arboretum)
• 김동갑(국립수목원 산림자원보존과) | Dong Kap Kim (Division of Plant Conservation, Korea National Arboretum) Corresponding author
• 오승환(국립수목원 연구기획팀) | Seung Hwan Oh (Division of Research Planning and Coordination, Korea National Arboretum)