• Title/Summary/Keyword: Korean endemic plant

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Embryo, Seed coat and Pericarp Development in Abeliophyllum distichum Nakai (Oleaceae): A Rare and Endemic Plant of Korea

  • Ghimire, Balkrishna;Jeong, Mi Jin;Choi, Go Eun;Lee, Hayan;Lee, Kyung Mee;Lee, Cheul Ho;Suh, Gang Uk
    • Korean Journal of Plant Resources
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    • v.28 no.3
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    • pp.350-356
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    • 2015
  • Abeliophyllum distichum is a monotypic taxon of Oleaceae and endemic to Korea. A comprehensive study on embryogeny and fruit and seed coat ontogeny in Abeliophyllum was carried out via microtome and light microscopy. The fertilization occurs during mid– to late April and embryo matures by early July. The embryo development follows the general fashion from globular embryo – transition embryo – heart shaped embryo – torpedo embryo – walking-stick embryo to mature embryo. The pericarp clearly differentiates into three histological zones: exocarp, mesocarp, and endocarp. The young seed comprises 10-12 cells thick seed coat and the mature seed coat comprises an exotesta, 6-8 mesotesta and an endotesta. Any crystals, phenolic-like compounds, idioblasts, and the sclereids are not found in pericarp as well as seed coat. An overall development confirms Solanade type of embryogenesis in Abeliophyllum. The endocarp becomes more prominent in mature fruit and all the layers of endocarp are highly lignified. On the basis of mechanical layer the seed coat is of exotestal type.

Practical Plan and Vascular Plants Around Construct-Reserved Site of Ecological Forest in Baekdudaegan (백두대간 생태숲 조성예정지의 관속식물상과 활용방안)

  • You, Ju-Han;Ra, Jung-Hwa;Cho, Hyun-Ju;Ku, Ji-Na
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.12 no.5
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    • pp.42-58
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    • 2009
  • This study was carried out to survey the vascular plants of the construct-reserved site of ecological forest in Kohang-ri, Sangri-myeon, Yecheon-gun, Gyeongsangbuk-do, Korea. The results are as follows. The vascular plants in this site were recorded as 392 taxa; 85 families, 254 genera, 341 species, 45 varieties and 6 forma. The Korean endemic plants were 5 taxa; Salix hallaisanensis, Clematis trichotoma, Chrysosplenium barbatum, Philadelphus schrenckii and Weigela subsessilis. The rare plants designated by Korea Forest Service were 2 taxa; Iris ensata var. spontanea and Aristolochia contorta. The naturalized plants were 25 taxa; Bromus tectorum, Dactylis glomerata, Panicum dichotomiflorum, Bilderdykia dumetora and so forth. In the results of analysis by floristic region, the specific plants were summarized as 31 taxa; Matteuccia struthiopteris, Oxalis obtriangulata, Betula davurica, Cimicifuga heracleifolia and so forth. The plants with approval for delivering oversea were 4 taxa; Salix hallaisanensis, Aristolochia controrta, Clematis trichotoma and Chrysosplenium barbatum. The plant resources were 186 taxa of ornamental plant, 241 taxa of edible plant, 274 taxa of medicinal plant and 202 taxa of others.

Saxifraga cortusifolia (Saxifragaceae): A new record for the Korean flora from Jejudo Island

  • Jae-Seo SHIN;Yong-In KIM;Eui-Kwon JUNG;Ji Hoon KIM;Bo-Yun KIM;Young-Dong KIM
    • Korean Journal of Plant Taxonomy
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    • v.52 no.4
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    • pp.251-254
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    • 2022
  • Saxifraga cortusifolia Siebold & Zucc. (Saxifragaceae, sect. Irregulares, ser. Rufescentes), a species considered endemic along mountain streams throughout Honshu, Shikoku, and Kyushu in Japan, was discovered as a wild population in the Cheona Valley in Haean-dong, Jeju-si on Jeju-do Island of Korea. The population consisted of three subpopulations occupying narrow areas 10 × 10 m2, 5 × 5 m2, and 10 × 5 m2 in size. The number of individuals in the three subpopulations was confirmed to exceed 100. Most of the individuals were on or below rocks at the edge of the valley. A morphological description, detailed photos, and a key to related taxa in Korea are presented.

Tofieldia ulleungensis (Tofieldiaceae): A new species, endemic to Ulleungdo Island, Korea

  • JO, Hyeryun;GHIMIRE, Balkrishna;HA, Young-Ho;LEE, Kang-Hyup;SON, Dong Chan
    • Korean Journal of Plant Taxonomy
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    • v.50 no.3
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    • pp.343-350
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    • 2020
  • Tofieldia ulleungensis, a new species of the genus Tofieldia from the Nari Basin on Ulleungdo Island, Korea, is described and illustrated. The new species is similar to T. yoshiiana var. koreana in terms of the plant height and in that it has having a long raceme, whitish tepals, and whitish stigma, but can be readily distinguished from the latter by the presence of 1-2 linear cauline leaves, a slightly bent leaf apex, basal leaves which are twice as wide, a shorter pedicel, a revolute style, and crescent-shaped seeds.

Character Analysis of the Flora of Mt. Kumjung (금정산 식물상의 특성분석)

  • Kim, Maeng-Ki;Bae, Chun-Hwa;Kim, Jong-Won
    • Journal of Environmental Science International
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    • v.6 no.1
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    • pp.89-94
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    • 1997
  • The flora of Mt. Kum.lung(80 lm) was Investigated to compare the flora of Mt. Hwang-Ryung, Mt. Cheon-Hwang, Mt. Chulseo. The vascular plants, collected from March 1995 to Oct., 1996, were consisted of a total 564 taxa: 103 families, 312 genera, 493 species, 1 subspecies. 66 varieties and 4 forms. The Korean endemic plants of this area were 11 taxa, the alplan and endangered plants were 29 taxa, the special wild plants designatlrlg by Enoronmental Agency were 2 taxa and the alpian plants were 18 taxa. Because many plants, being necessary to conserve, are distributed Kumjung, but if development is indespensable. destruction of natural ecosystem must be minimized.

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Flora of Mt. Suan, Gyeonggi-do (경기도 수안산의 식물상)

  • Kim, Jung-Hyun;Kim, Sun-Yu;Lee, Ji-Yeon;Yoon, Chang-Young
    • 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.

The complete chloroplast genome of Aruncus aethusifolius (Rosaceae), a species endemic to Korea

  • PARK, Jongsun;SUH, Hwa-Jung;OH, Sang-Hun
    • Korean Journal of Plant Taxonomy
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    • v.52 no.2
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    • pp.118-122
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    • 2022
  • Aruncus aethusifolius (H. Lév.) Nakai is an endemic species in Korea and is economically important as an ornamental herb. The complete chloroplast genome of A. aethusifolius is 157,217 bp long with four subregions consisting of 85,207 bp of large singlecopy and 19,222 bp of small single-copy regions separated by 26,394 bp of inverted repeat regions. The genome includes 131 genes (86 protein-coding genes, eight rRNAs, and 37 tRNAs). Phylogenetic analyses demonstrates that the chloroplast genome of A. aethusifolius was sister to A. dioicus var. kamtschaticus, forming the strongly supported clade of Aruncus. This is the first report of the chloroplast genome of A. aethusifolius.