-We conducted a total of 28 surveys from

This study of vascular plants was conducted over a period of 33 days from March to October of 2018 in Byeonsanbando National Park, South Korea. Based on voucher specimens and photographs, 829 taxa in total were recorded, including 141 families, 458 genera, 748 species, 16 subspecies, 59 varieties, and 6 forma. Two endangered taxa were identified, Iris koreana Nakai and Saururus chinensis (Lour.) Baill. Five rare taxa were found, including Abeliophyllum distichum Nakai and Hypodematium glanduloso-pilosum (Tagawa) Ohwi. A total of 17 Korean endemic plants were investigated. Examples include Elsholtzia byeonsanensis M. Kim, Eranthis byunsanensis B. Y. Sun, and Lycoris flavescens M. Kim & S. T. Lee. Of floristic regional indicators (third to fifth degree), 52 taxa were identified. Naturalized plants were identified, which included 79 taxa, and 7 species of ecosystem disturbance plants, such as Ambrosia artemisiifolia L., Lactuca serriola L., and Solidago altissima L. were found. We recorded 39 taxa of the plants vulnerable to climate change.

-A floristic study was conducted 23 times from March 2010 to May 2016 on Mt. Yongbongsan and Mt. Suamsan region of Chungcheongnam-do which lies across Sapgyo-eup, Deoksan-myeon Yesan-gun, and Hongbuk-myeon Hongseong-gun. Based on voucher speciemens, list of vascular plants found in this area were contained 532 taxa in total including 105 families, 312 genera, 468 species, 4 subspecies, 47 varieties, and 13 forma. The 8 taxa were Korean endemic plants such as Populus tomentiglandulosa T.B.Lee, Clematis brachyura Maxim, C. trichotoma Nakai, Indigofera koreana Ohwi, Forsythia koreana (Rehder) Nakai, Paulownia coreana Uyeki, Weigela subsessilis (Nakai) L.H.Bailey, Aster koraiensis Nakai. 4 taxa of rare plants designated by the Korea Forest Service such as Taxus cuspidata Siebold & Zucc., Lithospermum arvense L., Allium senescens L., and Iris ensata var. spontanea (Makino) Nakai. Endangered plants designated by the Ministry of Environment was not found in this study. The 11 taxa of floristic regional indicator plants in 3 rd to 5 th degree were found. 68 taxa naturalized plants were found and the naturalized ratio was 12.8% while 21.2% of urbanized ratio which is regarded quite high.

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