• Title/Summary/Keyword: Fraser-Jenk

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A Study on the Characteristics of Vascular Plants in the Stone Retaining Wall of Gudeuljang Paddy Fields in Cheongsan-Island (청산도 구들장논 석축(石築)의 관속식물 특성 연구)

  • Cha, Doo-Won;Kim, Ji-Yeon
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.41 no.1
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    • pp.1-9
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    • 2023
  • This study was carried out as basic data for the conservation and management of plant diversity in the Gudeuljang paddy fields stone retaining wall of Cheongsan-island by identifying the characteristics of vascular plants targeting Gudeuljang paddy fields stone retaining wall in Cheongsan-island. The total vascular plants of the Gudeuljang paddy fields stone retaining wall in Cheongsan-island have been identified with a total of 184 taxa of 60 families, 142 genera, 170 species, 5 subspecies, 9 varieties. Rare plants were 1 taxa, Korea endemic plants were 2 taxa, floristic regional indicator plants were 28 taxa, rock vegetation was 20 taxa, and invasive alien plants were 25 taxa. Among them, Selliguea hastata (Thunb.) Fraser-Jenk., a rare plants, has been identified as a small number of individuals in the Gudeuljang paddy fields stone retaining wall in Buheung-ri and Cheonggye-ri, but it is necessary to conservation the habitat because there is a concern that the species and population will decrease due to damage and neglect of the Gudeuljang paddy fields stone retaining wall.

A systematic study of Dryopteris subg. Erythrovariae (H. Itô) Fraser-Jenk. (Dryopteridaceae) in Korea (한반도산 관중속 홍지네족제비고사리아속(관중과)의 분류학적 연구)

  • Lee, Sang-Jun;Park, Chong-Wook
    • Korean Journal of Plant Taxonomy
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    • v.45 no.2
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    • pp.114-135
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    • 2015
  • The taxa of Dryopteris subg. Erythrovariae are variable in morphology, resulting in taxonomic confusion in delimiting taxon boundaries. We examined the morphological characteristics of the Korean members of subg. Erythrovariae to clarify their taxonomic identities and relationships. The shapes of the blades, pinnae, and pinnule apices, the shapes and colors of the scales, and the positions of sori were useful for delimiting the Korean taxa of the subgenus. Based on the results of this study and evidence from previous studies, 13 taxa comprising 12 species and one variety of Dryopteris subg. Erythrovariae were recognized in Korea. Descriptions of all Korean taxa of the subg. Erythrovariae and a key to the species are provided. The descriptions presented here are based on field observations and the examination of some 1,000 specimens from the major herbaria of the world.