• Title/Summary/Keyword: taxonomic study

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A taxonomic Study on the Marine Hydroids in Korea: 5. Athecate Hydroids

  • Park, Boon-Jo;Park, Jung-Hee
    • The Korean Journal of Zoology
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    • v.22 no.4
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    • pp.165-174
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    • 1979
  • 본인들은 남한의 西海와 南海 沿岸에서 採集된 민컵히드로蟲類의 표본들을 同定한 결과 다음과 같은 4種의 韓國未記錄種을 얻었기에 보고한다. Hydrichthella epigorgia Stechow, Solanderia misakinensis (Inaba), Hydrissa sodalis (Stimpson), Eudendrium tenellum Allman.

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A Taxonomic Review of Four Sillaginid Fishes (Perciformes) from the Adjacent Waters of Korea (한국 주변해역 보리멸과(농어목) 어류 4종의 분류학적 재검토)

  • Kwun, Hyuck-Joon;Kim, Jin-Koo
    • Korean Journal of Ichthyology
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    • v.22 no.2
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    • pp.105-114
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    • 2010
  • A taxonomic review of the family Sillaginidae was carried out based on two species (Sillago japonica and S. parvisquamis) collected in the coastal waters of Korea from 2008 to 2009 and three species (S. parvisquamis, S. aeolus and S. sihama) kept in the museum. Sillago japonica was easily distinguished from S. parvisquamis and S. sihama by lateral line scales (70~73 in S. japonica vs. 77~81 in S. parvisquamis vs. 67~70 in S. sihama) and scales above lateral line (3~4 vs. 7 vs. 5~6, respectively). Sillago aeolus differed from the other three species in having dark brown blotches on the side of body. We newly found morphological differences in some measurements (snout length, pectoral fin length and $2^{nd}$ anal spine length) and the number of vertebrae between Korean and Japanese S. parvisquamis, suggesting the two may be different populations. Although four sillaginid species are known from Korea, only two species (S. japonica and S. parvisquamis) were found in this study; accordingly, the distribution of the remaining two species (S. sihama and S. aeolus) may be restricted to subtropical waters.

The Characteristics of the Vegetation of 'Amgok' Wetland, Gyeongju National Park, Korea (경주국립공원 내 암곡습지 유역권 식생분포 특성 연구)

  • Kim, Ji-Suk;Choi, Song-Hyun;Hong, Suk-Hwan;Kang, Hyun-Mi;Bae, Jung-Nam
    • Korean Journal of Environment and Ecology
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    • v.27 no.3
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    • pp.381-395
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    • 2013
  • In this study, we surveyed 6 times for the actual vegetation type and flora of Amgok wetland (Intermediate moor area, Alnus japonica community area) and it's watershed area in Tohamsan district, Gyeongju National Park from Apr. to Nov. in 2011. As a result of the actual vegetation type, most vegetation of watershed area was disturbed by human activity except wetland area. Even though the wetland is relatively broad compared with it's watershed, the wetland: watershed is around 1:10. The flora was surveyed 65 family, 184 species, 1 subspecies, 39 variety, 8 forma and totally 233 taxonomic group in the watershed. The wetland type was looked intermediate moor. Naturalized plants was surveyed 2taxonomic in the wetland area and total was17 taxonomic. This area has relatively broad wetland and soundly conserved. But several Salix koreensis and Acer ginnala are growing so needed the interest and monitoring.

Taxonomic revision of the Artemisia sacrorum group (더위지기 및 근연분류군의 분류학적 재검토)

  • Park, Myung Soon;Nam, Bo Mi;Chung, Gyu Young
    • Korean Journal of Plant Taxonomy
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    • v.46 no.2
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    • pp.175-186
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    • 2016
  • The taxonomic status and scientific names of Artemisia gmelinii and its allied taxa have long been debated. To provide correct names and taxonomic status, A. gmelinii and its allied taxa were reviewed in this study based on morphological characters. After a comparison of original descriptions and type specimens, the names of A. freyniana f. discolor and A. freyniana f. vestita used in Korea were recognized as A. sacrorum var. sacrorum and A. sacrorum var. incana, respectively, based on the characters of the trichome on the leaf, the geographical distributions, the chromosome numbers, and the existence of a pinule connection on the exine of the pollen. A. iwayomogi, the scientific name misused as A. gmelinii, was combined and newly named A. sacrorum var. iwayomogi (Kitam.) M. S. Park & G. Y. Chung based on its morphological similarity to the A. sacrorum group. A description, illustration, and key for each of the taxa are provided here.

A taxonomic study of the genus Actinidia in Korea (한국산 다래나무속의 분류학적 연구)

  • Kim, Yoon-Young;Oh, Byoung-Un
    • Korean Journal of Plant Taxonomy
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    • v.43 no.4
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    • pp.285-295
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    • 2013
  • The genus Actinidia has been recorded as having total six taxa, composed of four species and two varieties, in Korea. However, its taxonomy remains complex because of disagreement on taxonomic characters used for species boundaries. Based upon morphological, anatomical, and palynological characters, we re-evaluated species delimitations in the genus Actinidia. Critical observation of wild populations and extensive herbarium materials including types were also carried out. It is generally considered that leaf thickness and shape, hair type and color were important diagnostic characters to identify species, but these characters were insufficient to be diagnostic characters because of their wide variation ranges. On the other hands, pith pattern, winter bud protrusion rate, scale leaf number, anther color, fruit shape, and maturity season were taxonomic significance. A. arguta var. platyphylla and A. arguta var. rufinervis have been identified by hair type and color, but these characters showed continuous variation in A. arguta. Therefore, two varieties are treated as synonyms of A. arguta. Consequently four species are recognized in Korea: A. polygama, A. kolomikta, A. rufa, and A. arguta. A key is provided, as well as complete descriptions of the species examined, including information on nomenclatural types, and synonymies.

Macrolepiota in Korea: New Records and a New Species

  • Cho, Hae Jin;Lee, Hyun;Park, Myung Soo;Kim, Changmu;Wisitrassameewong, Komsit;Lupala, Abel;Park, Ki Hyeong;Kim, Min Ji;Fong, Jonathan J.;Lim, Young Woon
    • Mycobiology
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    • v.47 no.4
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    • pp.368-377
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    • 2019
  • The genus Macrolepiota (Agaricales, Basidiomycota) is easy to recognize at the genus level because of big, fleshy basidiocarps with squamules covering the pileus; a single or double annulus; and big, thick-walled basidiospores with a germ pore. However, morphological identification is often unreliable in Macrolepiota due to similar morphological features among species. Due to the uncertainty of previous morphological identification in the genus Macrolepiota, it is necessary to re-examine Korean Macrolepiota using molecular data. We reexamined 34 Macrolepiota specimens collected from 2012 to 2018 in Korea using a reverse taxonomic approach, whereby species identification was first done based on the internal transcribed spacer (ITS) region analysis, followed by morphological confirmation. We identified the presence of four species: M. detersa, M. mastoidea, M. procera, and M. umbonata sp. nov. Two species (M. detersa and M. mastoidea) were previously unrecorded from Korea and M. umbonata is a new species. Detailed descriptions of all four species and taxonomic key are provided in this study. Macrolepiota procera and M. umbonata are distributed through the country, but M. detersa and M. mastoidea are distributed only in limited areas. According to our results, the combination of ITS locus and morphology proved to be a robust approach to evaluate the taxonomic status of Macrolepiota species in Korea. Additional surveys are needed to verify the species diversity and clarify their geographic distribution.

Taxonomic identity of Gang-hwa-yak-ssuk (강화약쑥의 분류학적 실체)

  • Park, Myung Soon;Nam, Bo Mi;Chung, Gyu Young
    • Korean Journal of Plant Taxonomy
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    • v.42 no.2
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    • pp.161-166
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    • 2012
  • Aiming to determine the taxonomic identity of Gang-hwa-yak-ssuk as a cultivated plant, this study analyzes ITS sequences and compares their external morphologies with the genus Artemisia, which have a similar external morphology. Thus far, we have considered A. indica as the original plant of Gang-hwa-yak-ssuk, but Gang-hwa-yak-ssuk is better grouped with A. argyi, not A. indica, for the following reasons: Gang-hwa-yak-ssuk has the same characteristics as A. argyi in terms of the natural habitat, in that it is 1-bipinnately cleft or parted in the external morphology of its leaves, and because the white glandular trichome is distributed on the adaxial surface. This is in addition to the result of ITS sequence analysis. Therefore, we can define Gang-hwa-yak-ssuk as a cultivated plant that originates from A. argyi and not A. indica.