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This study was carried out to inventory the vascular plant flora in Oenarodo Island, Jeollanam-do, South Korea in 2011. The vascular plants collected from the survey sites consisted of 574 taxa in total; 7 forms, 62 varieties, 2 subspecies, 503 species, 342 genera and 117 families. Among them, 8 taxa of Korean rare plants were found distributed in the sites, including Peucedanum hakuunense Nakai, Cymbidium macrorrhizum Lindl. and Bupleurum falcatum L. 6 taxa of Korean endemic plants such as Hepatica insularis Nakai and Carex okamotoi Ohwi were collected. In addition 101 notable taxa designated by the Ministry of Environment were collected as well. 46 taxa of naturalized plants, such as Paspalum distichum var. indutum Shinners and Veronica hederaefolia L. were recognized widely distributed in the sites.

This study was carried out to investigate the vascular plants of the Mt. Gariwang (1,560.6 m) Protected Area for Forest Genetic Resource Conservation. The vascular plants collected 5 times (from May 2011 to October 2012) consisted of total 529 taxa; 89 families, 272 genera, 458 species, 3 subspecies, 62 varieties and 6 forms respectively. Among them, 22 taxa of Korean endemic plants and 30 taxa of Korean rare plants were investigated in addition to 144 taxa of specially designated plants announced by the Ministry of Environment of Korea. Naturalized plants were 15 taxa, therefore naturalized ratio was 2.83%. 529 taxa listed consists of 178 taxa (33.6%) of edible plants, 144 taxa (27.2%) of medicinal plants, 163 taxa (30.8%)of pasture plants, 68 taxa (12.8%) of ornamental plants, 20 taxa (3.8%) of timber plants, 8 taxa (1.5%) of fiber plants, respectively.

The flora of vascular plants in the mountains located in the Uiryeong-gun area, in the South province of the Korean Peninsula, such as Jagul-san(897.1 m), 676 Highland(676 m), Byeokhwa-san(522 m), and the Bangeo-san(530.4 m), was investigated between April 2008 and August 2009. These investigations found 580 taxa consisting of 496 species, 1 subspecies, 77 varieties, and 6 forms, found within 319 genera under 103 families. The count totaled at 744 taxa(16.2% of all vascular plant taxa in Korea), which was made up of 648 species, 3 subspecies, 81 varieties, and 12 forms, found within of 362 genera under 109 families, when voucher specimens from the previous research studies were added. Forests of the investigated areas were generally composed of mixed Pinus densiflora and Quercus sp. The areas with comparatively excellent vegetation were the valley neighboring Baekun-sa(temple) (in the eastern slope of Mt. Jagul-san), the southwest slope of Mt. 676 Highland, the eastern slope of Mt. Byeokhwa-san, and the northern slope of Mt. Bangeo-san. 10 families were collected in abundance: Compositae, Graminae, Leguminosae, Liliaceae, Rosaceae, Cyperaceae, Labiatae, Polygonaceae, Ranunculaceae, and Violaceae these families made up 50% of all collected taxa. 19 taxa were endemic to the area, including Salix hallaisanensis H.Lev, S. koriyanagi Kimura, Aconitum austrokoreense Koidz, A. pseudolaeve Nakai, Clematis trichotoma Nakai, Thalictrum uchiyamai Nakai, Stewartia pseudocamellia Maxim, Philadelphus schrenkii Rupr., Lespedeza × robusta Nakai, Vicia chosenensis Ohwi, Euonymus trapococca Nakai, and Angelica cartilagino-marginata var. distans(Nakai) Kitag. Eight of the taxa were rare and endangered plants, as designated by the Korea Forest Service, including Jeffersonia dubia(Maxim.) Baker & S. Moore and Viola diamantiaca Nakai. 38 taxa of alien plants were found. Vegetation of the surveyed areas falls in the South province of the Korean Peninsula. Of all the taxa collected, 463 taxa(10.06% of all vascular plants in Korea) are considered useful plants, 231 taxa are edible, 193 taxa have medicinal uses, 65 taxa are used ornamentally, 234 taxa are important forage, 3 taxa are used as an industrial raw material, 17 taxa are used for timber, 18 taxa contain useful dyes, and 7 taxa are used for fiber.