• Korean Journal of Plant Taxonomy
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• v.50 no.1
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• pp.80-83
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• 2020

We report Fimbristylis ovata (Burm.f.) J. Kern (Cyperaceae) from the sunny grasslands along the coastline on Jejudo Island, Korea, as a new distribution in Korea. This is thought to be the third confirmed record of this rare sedge in Korea; the first was from Gapari ('Is. Quelpaert') collected by Taquet in 1908, and the second was from Marado Island, collected by Kim and Kim in 2018. We found two new populations on Jejudo Island, the first with many individuals and the second with only a few plants. Following an examination of herbarium specimens, this species is considered to be rare and endangered in Korea, limited in distribution in Korea to Jejudo and Marado Islands.

• Korean Journal of Environment and Ecology
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• v.9 no.2
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• pp.77-98
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• 1996

The flora of the Odaesan National Park, located in the areas of Pyongchang-gun, Myongju-gun and Inje-gun, Kangwon-do was surveyed. Field works was undertaken five times between March to October, 1995. The total number of vascular plants in the Odaesan National Park was surveyed was 512 taxa; 87 families, 277 genera, 435 species, 68 varieties, 2 subspecies, and 7 forms. The vascular plants were classified as 459 taxa, 85 families, 255 genera, 389 species, 61 varieties, 2 subspecies and 7 forms in Odaesan, 309 taxa 73 families, 194 genera, 257 species, 45varieties, and 5 forms in Hwangbyongsan and 151 taxa, 60 families, 115 genera, 138 species, 12 varieties and 1 form in Sogumgang area. Also this study recorded 35 taxa of Korean rare and endangered plant species. Some of the habitats of rare and endangered plant species are located in the vicinity from the nature trails. Conservation measures, at both the habitat and species levels, are urgently needed to mitigate against destructive human activities, such as an illegal mass collecting and trampling.

• Korean Journal of Environment and Ecology
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• v.18 no.1
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• pp.18-41
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• 2004

Sonjook island is located Samsan-myeon, Yeosu-si, Jeollanam-do. All of field information was collected from January 2001 to November 2002. The vascular plants recorded as total 584 taxa, 5 forms, 60 varieties, 519 species, 365 geneta, 113 families. Sonjook islands shows the typical vegetations including the lower area of temperate region of Korean peninsula and evergreen broad-leaved forests, Pinus thunbergii forest. The Korean endemic plants were recorded as 13 taxa (5 variety, 8 species, 10 genera, 10 families), 4 taxa as rare and endangered plants (Psilotum nudum (L.) Griseb., Milletia japoniea A. Gray, Arisaema negishii Makino, Sarcanthus scolopendrifolius Makino). The naturalized plants were 23 taxa (20 genera, 9 families, 8.2％ among the total naturalized plants in Korea. This area is ecologically important place that Korea endemic plant, rare and endangered plants ranges much than area. On the one hand, threat from degraded by environmental pollution that share of naturalized plant rises gradually augment. Strong conservation policy and development control should be considered.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.23-23
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• 2019

There are many island areas in Jeonnam Province and various plants are naturally grown due to their regional characteristics. Among them 217species were found to be Rare-Specialty plants in Jonnam Province. There are growing 35 species of Critically Endangered(CR), 37 species of Endangered Species(EN), 54 species of Vulnerable(VU) and 36 species of Least Concern(LC), many of which are native to islands far south or western of the sea. This report briefly describes the geographical distribution location and the state of reproduction among Rare-Specialty woody plants grown in the Warm-temperature Zone of Jeonnam Province. There are growing Michella compressa(Shinan-gun), Actinidia rufa(Wando-gun), Glochidion chodoense(Jindo-gun), Rhus ambigua(Yeosu), Wikstroemia ganpi (Goheung-gun, Yeosu) among of the 35 Critically Endangered species. Woody plants of Endangered Species(EN) are growing Albizia kalkora(Mokpo, Muan-gun), Daphne kiusiana(Shinan-gun), Marsdenia tomentosa(Wando-gun), Osmanthus insuralis(Yeosu, Shinan-gun). Woody plants of Vulnerable(VU) are growing Ardisia crenata(Wando-gun, Shinan-gun), Hibiscus hamabo(Wando-gun), Illicium anisatum (Jindo-gun), Koelreuteria paniculata(Wando-gun), Wikstroemia ganpi(Youngam-gun). Woody plants of Least Concern(LC) are Celtis choseniana(Yeosu), Chionanthus retusus(Wando-gun, Goheung-gun), Cinnamomum camphora(Wando-gun, Jindo-gun), Linder sericea(Boseong-gun).

• Journal of the Korean Society of Environmental Restoration Technology
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• v.21 no.3
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• pp.83-98
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• 2018

This study was conducted on rare plants distributed in Chungnam area from April, 2012 to November, 2017. The rare plant populations that are emerging are: Utricularia pilosa, Jeffersonia dubia, Iris ruthenica, Tipularia japonica, Calanthe discolor, Parasenecio pseudotaimingasa, Ranunculus kazusensis, Berchemia racemosa, Pogonia minor and Glehnia littoralis. According to the criteria of the International Union for Conservation of Nature (IUCN), plant resources in the rare species category were one important type (CR), three hazardous species (EN) and six vulnerable species (VU). As a result of analyzing characteristics of ecological environment and threats, five types of habitat types, two aquatic areas, two types of flatland and coastal sand dune distribution types were analyzed. The decreasing tendency of the rare plant populations in the surveyed area is judged to be artificial disturbance and habitat destruction rather than climate or environmental change. Considering the characteristics of habitat, conservation measures should be prepared for each population.

• Korean Journal of Plant Resources
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• v.25 no.4
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• pp.416-432
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• 2012

This study was carried out to investigate the distribution and characteristics of plant resources in Mt. Heungjeong (Pyeongchang-gun, Gangwon-do) from April, 2009 to May, 2011. The vascular plants based on voucher specimens were summarized as 403 taxa, including 78 families, 238 genera, 343 species, 3 subspecies, 47 varieties, and 10 forms. Among the investigated 403 taxa, 8 Korean endemic, 1 endangered, and 16 rare plants were included. 71 species of specially designated plant by the Ministry of Environment were also investigated. The naturalized plant were 20 taxa, and the percent of naturalized plant species was estimated as 5.0%. The usefulness of the plants of the 403 taxa listed consists of 175 taxa (43.4%) of edible plants, 126 taxa (31.3%) of medicinal plants, 65 taxa (16.1%) of pasture plants, 52 taxa (12.9%) of ornamental plants, 12 taxa (3.0%) of timber and fiber plants, 3 taxa (0.7%) of industrial plants.

• Journal of Plant Biotechnology
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• v.6 no.3
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• pp.193-197
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• 2004

In vitro multiplication of Curculigo orchioides was achieved by direct somatic embryogenesis in young leaf segments. Immature leaf segments of about 0.5 cm in length were cultured on MS medium supplemented with different concentrations of BAP (2-10 $\mu{M}$) or Kin (2-10 $\mu{M}$). Optimum response in terms of per cent cultures responding (89%) and the number of embryos per explant (16) were observed on MS medium supplemented with 8 $\mu$M BAP. The emergence of several somatic embryos on the adaxial side of the leaf segments was observed one month after the culture. Germinated somatic embryos were grown up to about 1.5 cm length before transferring to maturation medium. For maturation, the individual embryos were isolated and transferred to MS medium supplemented with BAP (5 $\mu{M}$) and NAA (0.5 $\mu{M}$). The plantlets emerged from the embryos were transferred to soil containing 1 peat: 1 sand with 90% success. The embryos were formed directly on the leaf segments without any callus phase. Direct regeneration of somatic embryos is important for the conservation of this endangered species, as rare somaclonal variants are likely to arise than from indirect regeneration.

• Korean Journal of Environment and Ecology
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• v.15 no.4
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• pp.293-318
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• 2002

As one of the botanical hot spots of the Korean peninsula, the vascular plant species in the areas of Taebaeksan, Hambaeksan, Geumdaebong(Peak) and Maebongsan were summarized as 694 taxa, 89 families, 302 genus, 579 species. 102 varieties and 13 forms. Based on the list of rare and endangered plants from the Forest Research Institute and the Ministry of Environment, 22 species were recorded in the studied areas: Thuja koraiensis(Cupressaceae), Arisaema heterophyllum(Araceae), Disporum ovale(Liliaceae), Tricyrtis dialata(Liliaceae), Lilium distichum(Liliaceae), Anemone koraiensis(Ranunculaceae), Rodgersia podophylla(Saxifragaceae), Rosa marretii(Rosaceae), Viola diamantica(Violaceae), Viola albida(Violaceae), Echinopanax horridum(Araliaceae), Acanthopanax chiisannensis(Araliaceae), Lysimachia coreana(Prinmulaceae), Syringa velutina var. kamibayashii, Halenia corniculata(Gentianaceae), Partrinia saniculaefolia(Valerianaceae), Adenophora grandiflora(Campanulaceae), Cacalia pseudo-taimingasa(Compositae) Iris odaesanensis(Iridaceae), Leontice microrhyncha(Berberidaceae), Rpdgersia tabularis(Saxifragaceae), and Acanthopanax sentico년(Araliaceae), Among them the four species were recorded from the list of the Ministry of Environment. As most of the species were recorded from the mountain-trails, the long-term habitat monitoring for the species is required .

• Korean Journal of Environment and Ecology
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• v.36 no.3
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• pp.257-276
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• 2022

Studies on rare and endemic plant conservation should be performed nationally to conserve plant diversity. Studies targeting a specific taxon have been reported based on the necessity of conserving plant diversity. From this point of view, there is an increasing necessity to compare and evaluate the studies for conservation. Moreover, it is necessary to analyze and review the direction for study subjects and items required for effective conservation of rare and endemic plants in Korea, based on the analysis results of collected data. We analyzed trends of studies on rare and endemic plants worldwide. In particular, we collected and analyzed the study trend in Korea. Study fields of the rare and endemic plants were divided into six classifications, of which the conservation ecology classification was sub-divided into the species traits, population study, and biological interaction. We have collected conservation ecology studies showing significant differences in regions and countries. They have been actively conducted in Europe and North America by region and in Japan and the United States by country. On the contrary, studies on basic ecology accounted for the most, followed by conservation genetics and restoration ecology in Korea. It was revealed that the portion of conservation ecology conducted in Korea was lower than that of the world. Moreover, studies mainly focused on a specific taxon of rare and endemic plants, such as endangered plants designated by the Korean Ministry of Environment. Particularly in Korea, conservation genetics and restoration ecology studies accounted for high percentages. Considering the worldwide study trends, particularly those in Europe and North America that lead the study of conservation ecology, we suggest approaches to increase the percentages of conservation ecology, including securing the information on species traits, population structure and population dynamics, and interaction between animals and plants are necessary for effective conservation of rare and endemic plants in Korea.

• Korean Journal of Environment and Ecology
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• v.17 no.4
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• pp.346-359
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• 2004

Flora was investigated in the Dongbok stream area of hwasun-gun, Jeonllanam-do from February in 2002 to August, were identified as 206 taxa; 75 families,158 genera,174 species,31 varieties and 1 form of plant. Hydrophytes of research site was investigated total, 29 taxa; 16 families, 23 genera, 26 species and 3 varieties. Emerged plants, submerged plant, floating leaved plants and floating plants among the hydrophytes was classified 22, 4, 2 and 1 taxa respectively. Naturalized plants of research site was investigated total, 19 taxa; 10 families, 17 genera, 17 species, 2 varieties. Based on the list of rare and endangered plants from the Forest Research Institute and the Ministry of Environment 1 species Sparganium stoloniferum were recorded in the studied area.