• Journal of Environmental Science International
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• v.30 no.2
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• pp.119-133
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• 2021

The purpose of this study was to provide basic information for rational management plans for sustainable conservation and utilization by comprehensive analyzing the flora distributed in Yongchu valley, Changwon-si. The flora of Yongchu valley were summarized as 319 taxa including 93 families, 212 genera, 285 species, 3 subspecies, 6 forms and 25 varieties. The endemic plants were 5 taxa such as Chrysosplenium pilosum var. fulvum, Impatiens koreana, Lespedeza maritima, Thalictrum acteifolium and Weigela subsessilis. The rare plants were 11 taxa including I. koreana, Prunus yedoensis and Magnolia kobus. The specific plants by floristic region were 38 taxa including I. koreana, Jeffersonia dubia., M. kobus and P. yedoensis which are class V. The naturalized plants were 11 taxa including Solanum americanum, Aster pilosus, Crassocephalum crepidioides and Cerastium glomeratum and so forth and invasive alien plants among these plants was 1 taxa of A. pilosus. The target plants adaptable to climate change were 8 taxa including Corydalis turtschaninovii of northern plant, I. koreana of endemic plant, and Meliosma myriantha of southern plant.

• Plant Biotechnology Reports
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• v.3 no.1
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• pp.67-74
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• 2009

An efficient micropropagation protocol based on multiple shoot induction and callus regeneration has been standardized in Sarcostemma brevistigma, a rare medicinal plant. The nodal cuttings were cultured on MS medium supplemented with BA ($0.5-8{\mu}M$) or Kn ($0.5-8{\mu}M$) alone or in combination with NAA ($0.5-1.5{\mu}M$). Maximum multiple shoot induction was observed on MS medium supplemented with $4{\mu}M$ BA. On this medium, 100% cultures responded with an average number of 11.3 shoots per explant. However, the average shoot length was limited to only 0.9 cm on this medium. The addition of $1{\mu}M$ NAA along with $4{\mu}M$ BA gave rise to an average number of 10.9 shoots with an average shoot length of 1.8 cm. Luxuriantly growing callus was obtained on MS medium supplemented with BA ($5{\mu}M$) and 2,4-D ($2{\mu}M$). The callus was subcultured on MS medium supplemented with BA ($2-15{\mu}M$) or Kn ($2-15{\mu}M$) alone or in combination with NAA ($0.5-2{\mu}M$) for shoot organogenesis. Optimum callus regeneration was obtained on MS medium supplemented with $10{\mu}M$ BA and $1{\mu}M$ NAA. On this medium, 100% cultures responded with an average number of 13.4 shoots per culture. The shoots obtained via multiple shoot induction and organogenesis were rooted on half-strength MS medium supplemented with NAA ($1-7{\mu}M$) or IBA ($1-7{\mu}M$). IBA was better than NAA in terms of both the percentage of cultures that responded and the average number of roots per explant. The rooted shoots were successfully transplanted to soil with 86% success. This standardized protocol will help to conserve this rare medicinal plant.

• Journal of Environmental Science International
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• v.21 no.4
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• pp.489-505
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• 2012

This study was carried out to investigate the flora of Mt. Suan (Gyeonggi-do). The vascular plant were collected 13 times (from March to October 2011), and 402 taxa in total were identified, including 102 families, 274 genera, 354 species, 6 subspecies, 40 varieties and 2 forms. Among them, 8 taxa of Korean endemic plants and the Korea Forest Service-designated rare plants were identified as 5 taxa. Based on the list of plants which have been approved for overseas delivery, 10 taxa were recorded in the investigated area. The Ministry of Environment-designated specially plants were identified as 17 taxa. The naturalized plants were identified as 41 taxa and the percent of naturalized index (NI) was 10.2% of total 402 taxa vascular plants.

• Korean Journal of Environment and Ecology
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• v.12 no.3
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• pp.191-211
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• 1998

The flora of the Kayasan National Park was surveyed from March to September, 1997. This area has very rich and diverse vascular plants; 613 taxa with 102 families, 323 genera, 522 species, 1 subspecies, 83 varieties, 5 forms and 2 hybrids. The rare and endangered plants species such as Lilium cernum Kom., Thymus quiquecostatus Celak., Cypripedium macranthum Sw., Tricyrtis dilatata Nakai, Abies koreana Wils., etc. were recorded. The plant species of 100 taxa such as Typha orientalis Presl, Corydalis maculata B. Oh et Y. Kim, Ajuga spectabilis Nakai, etc. were recorded for the first time in the area. The introduced plant species were found along the traffic road sides. The plant species of 14 taxa such as Lilium cernum Kom., Thymus quiquecostatus Celak., Abies koreana Wils., etc. which categorized as rare and endangered plants by the Office of Forestry were also recorded in the area(This species were mainly distributed in the habitats where easily threatened by human's activities).

• Journal of the Korean Society of Environmental Restoration Technology
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• v.22 no.6
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• pp.41-61
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• 2019

The purpose of this study was carried out to present the basic data for constructing a ecological stream, Shindangcheon stream located in Gyeongju-si, Gyeongsangbuk-do, South Korea. From August 2017 to June 2019, a total of 7 surveys were conducted. The numbers of vascular plants were summarized as 388 taxa including 75 families, 246 genera, 360 species, 4 subspecies, 19 varieties, 2 forms and 3 hybrids. The most families of taxa were Poaceae (59 taxa), Asteraceae (47 taxa), Fabaceae (27 taxa), Rosaceae and Cyperaceae (20 taxa, respectively), and Polygonaceae and Brassicaceae (15 taxa, respectively). The rare plant was Aristolochia contorta Bunge, and the Korean endemic plants were 4 taxa, such as Populus × tomentiglandulosa T.B.Lee, Salix koriyanagi Kimura ex Goerz, Lespedeza maritima Nakai, and Weigela subsessilis (Nakai) L.H.Bailey. The specific plants by floristic region found in this site were 13 taxa comprising 8 taxa of grade I, 4 taxa of grade III, and 1 taxon of grade IV. The naturalized plants were 73 taxa, such as Fallopia dumetorum (L.) Holub, Persicaria orientalis (L.) Spach., Potentilla supina L. var. ternata Pterm., and so forth. The invasive alien plants were 6 taxa, such as Rumex acetosella L., Sicyos angulatus L., Solanum carolinense L., Ambrosia artemisiifolia L., Lactuca serriola L., and Symphyotrichum pilosum (Willd.) G.L.Nesom..

• Journal of Plant Biotechnology
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• v.50
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• pp.108-114
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• 2023

In vitro conservation is one of the most effective strategies for rare plant protection, especially for orchid species. To maximize the success rates of in vitro explant establishment (stage I) in conservation programs, the application of tissue culture additives such as Plant Preservative Mixture^TM (PPM^TM) should be emphasized. In this study, we used Dendrobium thyrsiflorum Rchb.f. (1875) seeds and seedlings as a model for the evaluation of PPM^TM's phytotoxicity in the meristematic tissues of epiphytic orchids. PPM^TM had no observable inhibitory effect on protocorm, shoot, or root development when it was supplemented at 0.1%. PPM^TM supplementation caused adverse effects on D. thyrsiflorum explants at concentrations > 0.2%. At high concentrations, young in vitro seedlings showed damage, especially at the root tissue level. Based on this model, supplementation of 0.1-0.2% PPM^TM to culture media was successfully implemented to establish in vitro cultures of other rare orchid species in our conservation program.

• Korean Journal of Plant Taxonomy
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• v.47 no.1
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• pp.51-93
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• 2017

Eastern coastal lagoons are a particular type of estuarine systems where seawater mixes with fresh water from their catchments. With the development of aquatic vegetation, this area shows high level of biodiversity. The purpose of this study is to produce a strategy for the comprehensive conservation of the vegetation of coastal lagoons through studies of the floristics and plant species compositions in 17 eastern coastal lagoons in Korea. Vascular plants were collected 109 times, from June of 2010 to November of 2014. The results showed that there were 720 taxa in total, including 118 families, 378 genera, 655 species, 13 subspecies, 46 varieties, and 6 hybrids. Korean endemic species numbered 11 taxa, and vascular plants listed in the red list according to the International Union for Conservation of Nature (IUCN) numbered 18 taxa. Indicator species of fourth (IV) and fifth (V) degree, as specified by floristic subregions, numbered 23 taxa. Among the species investigated in this survey, there were 4 taxa of plants of southern origin and 8 taxa of plants of northern originin the Korean peninsula. Several rare plants, Thermopsis lupinoides, Ligusticum hultenii, Mitrasacme alsinoides, Utricularia australis, Juncus fauriei, Carex vesicaria, and Puccinellia kurilensis, were distributed in eastern coastal lagoons. In all, 96 alien plants were recorded in the investigated area. The coastal lagoons on the eastern coast of Korea showed high plant diversity with many rare plants and phytogeographically important plants. Conservation strategies to ensure biodiversity and effective management of coastal lagoons are discussed in detail.

• Journal of Plant Biology
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• v.19 no.3
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• pp.92-94
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• 1976

Elachista tenuis Yamada, epiphytic on Sargassum confusum, is reported for the first time in Korea. It forms hemispherical tufts by pseudoparenchymatous medulla and assimilatory filaments. The cells ofassimilatory filament are not constricted at septa, and nearly equal in breadth from base to apex. Plurilocular sporangia are rather abundant, while unilocular sporangia rare.

• 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.

• Korean Journal of Plant Resources
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• v.17 no.2
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• pp.122-134
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• 2004

This study was carried out to investigate the resource plants of Mt. Midong. The resource plant of Mt. Midong was surveyed from March, 2002 to October, 2003. In the result of survey, the vascular plant species in Mt. Midong were summarized as 400 taxa; 85 families, 266 genera, 349 species, 48 varieties and 3 forms. And in the results of survey on resource plants among 400 taxa, we confirmed 162 taxa of ornamental plants(40.5％), 250 taxa of edible plants(62.5 ％), 257 taxa of medicinal plants(64.3％) and 167 taxa of the others(41.8 ％). The six taxa were recorded in the surveyed sites as the Korean endemic plants; Hytomecon hylomeconoides, Filipendula palmata var. glabra, Ajuga spectabilis, Weigela subsessilis, Cirsium setidens and Saussurea seoulensis. The rare and endangered plants designated by Korea Forestry Service were two taxa; Hylomecon hylomeconoides and Polygonatum stenophyllum.