• Title/Summary/Keyword: 식별형질

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A Numerical Taxonomy of Korean Ilex (Aquifoliaceae) (한국산 감탕나무속(Ilex L.) 식물의 수리분류학적 연구)

  • Hwang, Seung-Hyun;Park, Seon-Joo;Kim, Joo-Hwan
    • Korean Journal of Plant Taxonomy
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    • v.37 no.4
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    • pp.401-418
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    • 2007
  • We performed the numerical analyses of thirty two morphological characters for twenty four populations of eight Korean Ilex L. taxa. Principal component analyses showed that the first three principal components were related to the total covariance by 67.0%, and the proportions of PCl, PC2 and PC3 were 31.5%, 21.1%, and 14.4%, respectively. And the closely related characteristics to the PCl, PC2 and PC3 were some reproductive characters such as the morphology of sepal, petal, anther, pistil and fruits and vegetative characters such as the morphology of petiol and leaf margin, the trichomes on the twigs, the leaf duration. From the two dimensional plottings by the eigenvalues of PCl, PC2 and PC3, six grouped were clustered as Ilex integra, I cornuta, I x wandoensis, I. rotunda, I. macropoda and I. macropoda for. pseudomacropoda, I. crenata and I. crenata var. microphilla. The numerical analysis was useful for the taxonomy of Korean Ilex because it clearly seperated the populations of taxa included in this study. The identification key was provided with the diagnostic characters.

Trichome morphology of Fallopia sect. Reynoutria (Polygonaceae) in Korea (한국산 닭의덩굴속 호장근절 (마디풀과) 식물의 털의 형태와 분류)

  • Moon, Hye-Kyoung;Park, Jin Hee;Park, Chong-Wook
    • Korean Journal of Plant Taxonomy
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    • v.41 no.1
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    • pp.51-57
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    • 2011
  • The microstructure of the leaf epidermis and trichomes of Fallopia sect. Reynoutria are examined using scanning electron microscopy. Fallopia sachalinensis was distinguished from other taxa in this section by its prominent epicuticular wax layer consisting of protruding wax rodlets. In addition, epicuticular rodlets of F. sachalinensis individuals from Ullung Island and Dok Island appear to be thinner than those from other regions, including Japan and Sakhalin. The stomatal size appears to be related to the ploidy level in the sect. Reynoutria, as the hexaploids, octoploids and dodecaploids tend to have larger stomata as compared to tetraploids. Three basic types of trichomes were found in the section; (1) conical unicellular trichomes, (2) uniseriate filiform trichome consisting of 1-8 cells, and (3) peltate glandular trichomes. The trichome types and their distribution appear to be useful in distinguishing the taxa in the section.

A taxonomic study on sect. Rhomboidales Kük. and sect. Digitatae Fr. of genus Carex L. subgen. Eucarex Cross & Germ. (Cyperaceae) in Korea (한국산 사초속 사초아속(Carex L. subgen. Eucarex Cross & Germ.) 피사초절과 그늘사초절 식물의 분류학적 연구)

  • Oh, Yong Cha;Kim, Ji Hyun
    • Korean Journal of Plant Taxonomy
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    • v.32 no.3
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    • pp.301-338
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    • 2002
  • Morphological characters of sections Rhomboidales (four taxa) and Digitatae (seven taxa) of the subgen. Eucarex (genus Carex, Cyperaceae) were reexamined. The epidermal patterns of perigynium, achene and leaf were investigated by SEM and LM. Morphological characters such as length and width of stem, leaf, bract, spike, scale, perigynium and achene, and shape of cross-sectioned stem, spike, scale, apex of scale, perigynium, beak and base of perigynium, achene, hair present or absent in perigynium, number of involucre and epidermal pattern of perigynium, achene and leaf(shape of fundamental epidermal cell and cell wall, type of silica body, shape of beak epidermal cell and cell wall in perigynium, subsidiary cell shape, size and frequency of stomatal complex of leaf) were useful for the identification of the observed 11 taxa. According to the current study, examined 11 taxa of sections Rhomboidales and Digitatae were distinct from each other regarding by length of leaf, stem, pistillate scale and perigynium, shape and epidermal cell of perigynium beak. C. lanceolata and C. humilis have been confused due to similar morphological characters. C. lanceolata and C. humilis were distinct, however with respect to from length of stem, leaf ligule present or absent, shape of cross-sectioned stem, epidermal patterns of perigynium, achene and leaf. And C. lanceolata could be distinguished from C. pediformis by shape of perigynium and achene, shape of cross-sectioned of stem, epidermal pattern of perigynium, achene and leaf.

A taxonomy study on 9 taxa of Carex L. (Cyperaceae) in Korea (한국산 사초속(Carex L.) 7절 9종에 대한 분류학적 고찰)

  • Oh, Yong Cha;Lee, Chang Shook;Heo, Sun Young
    • Korean Journal of Plant Taxonomy
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    • v.34 no.3
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    • pp.245-264
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    • 2004
  • For nine taxa of the genus Carex which consist of C. arenicola, C. chordorhiza, C. curta, C. gibba, C. laevissima, C. leiorhyncha, C. neuromrpa, C. maakii and C. remouscula with mixed pistillate and staminate flowers, morphological characters such as inflorescense, spikelet, inflorescence bract, utricle, pistillate and staminate scales, achene, length between two spikelets were observed to find useful characters for their identification. Especially, the shape and the number of spikelet were very useful characters to divide the treated nine taxa into two groups, the their keys were prepared. The first group was comprised of five species of C. arenicola, C. chordorhiza, C. curta, C. gibba, and C. remouscula, which were characterized by broadly oboval or narrowly elliptical shape of spikelet, and 3-9 spikelets per infIorescence and gradual decrease in length between two spikelets. The second group was composed of four species of C. laevissima, C. leiorhyncha, C. neurocarpa, C. maakii, which were distinguished by oval shape of spikelet, and 17-20 spikelets per infIorescence and repetition of increase.

Taxonomic Revision of the genus Chelon (Pisces, Mugilidae) from Korea (한국산 Chelon속 (Pisces, Mugilidae) 어류의 분류학적 재검토)

  • Kim, Yong-Uk;Kim, Jin-Koo
    • Korean Journal of Ichthyology
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    • v.10 no.2
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    • pp.250-259
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    • 1998
  • This study was carried out to reveal the taxonomic status of the two mullets, Chelon affinis and Chelon haematocheilus from Korea by comparison of their morphological characteristics. Chelan affinis, occurred in the southern coastal area, is a distinct species characterized by having a keel on the middorsal line in front of the spinous dorsal fin. However, Chelon haematocheilus, found in the all coastal areas of Korea excluding Cheju island is easily distinguished from the former in having the deep flat head. By comparison of five groups of Chelan haematocheilus, Kunsan group is slightly differed from others in the height of anal fin and caudal peduncle length. Although Chelon affinis is similar with Chelan haematocheilus in the view of meristic characters, they are distinguished from each other in the number of pyloric caeca and lateral line scales.

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Taxonomic reviews on three taxa of Korean Euphorbia L. (한국산 대극속 3분류군의 분류학적 재검토)

  • Ji, Seong-Jin;Oh, Byoung-Un
    • Korean Journal of Plant Taxonomy
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    • v.39 no.2
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    • pp.100-106
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    • 2009
  • The morphological characters and scientific names on 3 taxa of Korean Euphorbia were reviewed. Growing pattern of stems, arrangement of leaves, the presence of appendages, the presence of ovary's hairs, shape of seeds and the presence of caruncles were valuable characters in identifying the taxa. The correct scientifie names of Nang-dok, Keun-ttang-bin-dae and Ae-gi-ttang-bin-dae were E. fischeriana, E. hypericifolia and E. maculata respectively based on the morphological characters, the type specimens and the original descriptions. Keys to the species were provided for the accurate identification.

Aphelinids (Hymenoptera: Aphelinidae) of Unaspis euonymi (Comstock) (Hemiptera: Diaspididae) in Korea (우리나라 사철깍지벌레 (Unaspis euonymi (Comstock) (Hemiptera: Diaspididae))에 발생하는 면충좀벌 (Hymenoptera: Aphelinidae))

  • Suh, Soo-Jung;Gregory A., Evans
    • Korean journal of applied entomology
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    • v.54 no.2
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    • pp.115-119
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    • 2015
  • Four species of aphelinids from Unaspis euonymi (Comstock) infesting Japanese spindle (Euonymus japonicus Thunb. (Celastraceae)) leaves and twigs were collected and identified as Ablerus perspeciosus Girault, Encarsia citrina (Craw), Marietta carnesi (Howard) and Pteroptrix machiaveli (Girault). Of these, Pteroptrix machiaveli (Girault) is newly documented in the Korean fauna of Aphelinidae. Brief diagnostic criteria and illustrative photographs of these species are provided and there is information on the distribution and hosts of each species as well.

A Taxonomic Review of the Genus Laccophilus Leach (Coleoptera: Dytiscidae: Laccophilinae) in Korea (한국산 깨알물방개속(딱정벌레목 : 물방개과 : 깨알물방개아과)의 분류학적 재검토)

  • LEE, Dae-Hyun;AHN, Kee-Jeong
    • Korean journal of applied entomology
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    • v.54 no.2
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    • pp.63-71
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    • 2015
  • A taxonomic review of Korean Laccophilus Leach is presented. Five species are recognized, three of which [L. hyalinus (De Geer), L. lewisius Sharp and L. minutus ($Linn{\acute{e}}$)] previously recorded in Korea are incorrect identification of L. vagelineatus Zimmermann, L. lewisioides Brancucci and L. difficilis Sharp, respectively. Habitus and SEM photographs, key and diagnoses of the species are provided.

A Newly Recorded Species of the Genus Spathius Nees (Hymenoptera: Braconidae: Doryctinae) with a Checklist in Korea (한국산 자루배고치벌속(벌목: 고치벌과: 중국고치벌아과)의 1미기록종 및 목록)

  • Lee, Hye-Rin;An, Tae-Ho;Ku, Deok-Seo;Byun, Bong-Kyu
    • Korean journal of applied entomology
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    • v.56 no.3
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    • pp.295-299
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    • 2017
  • In the present study, one species of the subfamily Doryctinae, Spathius depressithorax Belokobylskij, 1998, is reported for the first time from Korea. A diagnosis and photographs for the species are provided. Also, a total of 13 species of the genus Spathius Nees, 1819 known from Korea is presented with synonymies and distributional ranges.

Mimemodes cribratus (Reitter) (Coleoptera: Cucujoidea: Monotomidae) New to Korea and a Key to Korean Monotomid Species (큰머리톱가슴긴고목벌레의 국내 첫 보고 및 한국산 톱가슴긴고목벌레과의 종 분류 검색표)

  • Lee, Seung-Gyu;Kim, Moo-Sung;Lim, Jongok;Kim, Il-Kwon
    • Korean journal of applied entomology
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    • v.57 no.2
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    • pp.65-68
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    • 2018
  • Mimemodes cribratus (Reitter) is newly recognized from Korea. The present study includes a redescription, images of habitus and diagnostic characters of the species. In addition, a key to Korean species of Monotomidae is provided.