• Title/Summary/Keyword: plant systematics

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Morphological characteristics, distribution and taxonomic consideration of Chionanthus retusus Lindl. & Paxton in Korea (한국산 이팝나무(Chionanthus retusus Lindl. & Paxton)의 형태학적 특징, 분포 및 분류학적 검토)

  • Song, Jun-Ho;Kong, Min-Jung;Hong, Suk-Pyo
    • Korean Journal of Plant Taxonomy
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    • v.41 no.2
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    • pp.156-163
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    • 2011
  • The morphological characteristics of Chionanthus retusus Lindl. & Paxton in Korea are reviewed in this study through the comparison with its previous records and a distribution map of this species is created using previous flora and voucher specimens. The leaf epidermal micromorphology and the petiole anatomy are also briefly described.

Morphological characteristics of major airborne pollen in Korea peninsula

  • Moon, Hye-Kyoung;Kong, Min-Jung;Song, Jun-Ho;Kim, Sun-Yu;Kim, Jin-Suk;Jung, Eun-Hee;Park, Chan-Ho;Lee, Byoung-Yoon;Hong, Suk-Pyo
    • Journal of Species Research
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    • v.4 no.2
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    • pp.159-168
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    • 2015
  • Although airborne pollen is invisible to the eye, it has been known as a major source to respiratory allergic reactions. For this reason, airborne pollen is monitoring in many countries to predict pollen concentration based on locality and season. However, the morphological characteristics of airborne pollen and their potential tendency as an allergen are still obscure. In the present study, we selected 52 airborne pollen samples based on previously reported data and investigated their detail pollen characteristics using LM and SEM. Major airborne pollen in Korea has sorted in 19 families (most angiosperms except four gymnosperm families), and all pollen grains are small to medium in size ($P=17.34-49.86{\mu}m$) apart from the bisaccate pollen grains of Pinaceae ($P=46.49-106.20{\mu}m$). The aperture number and shape vary from sulcate to polyporate. While the inaperture pollen has found only in gymnosperm (Cupressaceae and Taxaceae), triporate or polyporate is common pollen type in angiosperm. The sexine ornamentations could divide into several types, but the most sculpturing types are inconspicuous like psilate, rugulate and granulate. Reticulate pollen grains as a semitectum have occurred the species of genera Platanus and Fraxinus only. To estimate the possible relationships between pollen features and allergen, the results are discussed in botanical context.

Comparative seed morphology of Solanaceae in Korea (한국산 가지과의 종자 비교형태)

  • Kong, Min-Jung;Lee, Jong-Su;Hong, Suk-Pyo
    • Korean Journal of Plant Taxonomy
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    • v.41 no.1
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    • pp.35-46
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    • 2011
  • The seed morphology of 22 taxa (12 genera) of Solanaceae in Korea was studied by stereo and scanning electron microscopy, and a detailed description of seed morphological features for all examined taxa is provided. The color of the seed is yellow to black, and the shape is reniform to circular. Its size is 0.56-4.29 mm in length and 0.38-3.20 mm in width. The largest sample was found in Datural metel, while the smallest was in Petunia hybrida. Three different surface types (verrucate, verrucate-reticulate, and reticulate) were recognized in the studied taxa. The top of the anticlinal wall produces appendages known as 'fibrils'. This projection of anticlinal wall was found to be specific to the genus Solanum (S. japonense, S. lyratum, and S. lycopersicum). The morphological features (seed shape, size, color, hilum shape, surface type, and fibrils) of the family Solanaceae in Korea are described and their systematic implications are briefly discussed.