• Title/Summary/Keyword: Taxon

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Lectotypification and identity of Thymus quinquecostatus var. magnus(Nakai) Kitam. (Labiatae) (섬백리향(꿀풀과)에 대한 선정기준표본 설정과 분류학적 검토)

  • Lim, Youngseok;Kim, Young-Dong;Shin, Hyunchur
    • Korean Journal of Plant Taxonomy
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    • v.36 no.2
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    • pp.129-136
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    • 2006
  • Thymus quinquecostatus var. magnus (Nakai) Kitam., an endemic taxon in Ulleung Island, is lectotypified. The lectotype is designated based on careful examination of the original materials (deposited in TI) cited in the protologue of the variety. In addition, taxonomic identity of T. quinquecostatus var. japonicus H. Hara, a problematic name often mistakenly referred to the above taxon, was throughly reexamined.

The first record of Thyrocarpus glochidiatus (Boraginaceae) in Korea (한반도 미기록속 식물: 대청지치(지치과))

  • Yang, Jong-Cheol;Lee, You-Mi;Park, Soo-Hyun;Ha, Sang-Gyo
    • Korean Journal of Plant Taxonomy
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    • v.40 no.1
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    • pp.71-73
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    • 2010
  • We report for the first time a taxon of the genus Thyrocarpus (Boraginaceae) from Daecheongdo, Ongin-gun, Incheon-si in Korea. This taxon appears to be Thyrocarpus glochidiatus Maxim., previously known from China. The new Korean name, 'Dae-Cheong-Ji-Chi', was given considering the name of discovered location. A description, an illustration and a photograph were given.

Notes on the Existence of Leucodecton desquamescens (Thelotremoid Graphidaceae) in South Korea

  • Joshi, Yogesh;Wang, Xin Yu;Nguyen, Thi Thuy;Koh, Young-Jin;Hur, Jae-Seoun
    • Mycobiology
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    • v.38 no.2
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    • pp.149-152
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    • 2010
  • This study describes a new record of a thelotremoid lichen (Leucodecton desquamescens) from South Korea. The taxon is characterized by thick, bulging thallus with many calcium oxalate crystal inclusions; an immersed, round to irregular ascomata with free exciple, ellipsoid to $\pm$ roundish submuriform, brown ascospores, and lack of secondary metabolites. A detailed taxonomic description and comments are presented for this taxon. The lichen genus Leucodecton is reported for the first time in South Korea.

Floristic Study of Yeongheungdo Island (영흥도의 식물상)

  • Lim, Yongseok;Na, Hye Ryun;Han, Byungwoo;Seo, Won Bok;Hyun, Jin-Oh
    • Korean Journal of Plant Resources
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    • v.28 no.4
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    • pp.456-474
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    • 2015
  • We have investigated the flora of Yeongheungdo Island in Ongjin-gun, Incheon. A total of 13 separate field trips were carried out from March 2012 to October 2013. As a result, 302 taxa including 80 families, 211 genera, 261 species, 6 subspecies, 31 varieties and 4 forms were identified. These include the following: 1 taxon protected under the Act on the Protection and Management of Wildlife, 3 Korean endemic taxa, 8 floristic indicator species including 2 taxa of grade V, 3 of grade II and 3 of grade I, 33 naturalized taxa with the naturalization rate of 10.9% and 1 northern taxon vulnerable to climate change.

Pedicularis cheilanthifolia var. albida (Orobanchaceae): A new record for the flora of Uttarakhand, India

  • Sunit SINGH;Sajan THAKUR;J.P. MEHTA;Harish Chander DUTT
    • Korean Journal of Plant Taxonomy
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    • v.53 no.1
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    • pp.65-68
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    • 2023
  • The herb Pedicularis cheilanthifolia var. albida (Pennell) P. C. Tsoong is reported and collected for the first time from the Rudraprayag District of Uttarakhand. The species was seen growing along a glacial stream in an alpine region between 4,100 and 4,400 m asl. Morphological characteristics of the species were examined and processed for herbarium deposition. To simplify taxon identification, a brief taxonomic description and illustration of the taxon are provided.

Atelomix in Ethiopian Highland Lakes: their role in phytoplankton dynamics and ecological features

  • Solomon Wagaw;Assefa Wosnie;Yirga Enawgaw
    • Fisheries and Aquatic Sciences
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    • v.26 no.7
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    • pp.423-436
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    • 2023
  • The objectives of this review were to synthesize the community structure of phytoplankton and the role of atelomix in the phytoplankton dynamics in Ethiopian highland lakes. Changes in a lake's physical structure, light dynamics, and availability of nutrients are closely associated with phytoplankton ecology, and phytoplankton assemblages provide insight into phytoplank- ton responses to these environmental changes. Based on the available information, a total of 173 species of phytoplankton are grouped under seven classes, Chlorophyceae (80 taxa), Bacillariophyceae (55 taxa), Cyanophyceae (24 taxa), Dinophyceae (6 taxa), Eugleonophyceae (6 taxa), Xanthophyceae (1 taxon), and Cryptophyceae (1 taxon) were recorded in five different tropical Ethiopian highland lakes. Chlorophyceae and Bacillariophyceae dominated in terms of species composition. Partial atelomixis, seasonality, and low nutrient concentrations seem to be the main drivers in structuring phytoplankton composition and abun-dances in Ethiopian highland lakes, characterized by a high diversity of atelomix-dependent benthic diatoms and desmids. Thus, this review will help understand the role of atelomix and nutrient availability in the phytoplankton composition and biomass of tropical highland lakes of Ethiopia.

First record of Ajuga nipponensis Makino (Lamiaceae) from Korea (한국산 조개나물속(꿀풀과)의 미기록 식물: 분홍꽃조개나물)

  • Kim, Sun-Yu;Moon, Soon-Hwa;Kim, Jin-Seok;Kim, Jung-Hyun;Lee, Byoung Yoon
    • Korean Journal of Plant Taxonomy
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    • v.43 no.3
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    • pp.165-167
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    • 2013
  • Five taxa of the genus Ajuga L. (Lamiaceae) were known previously in Korea which were mainly distributed in lowland and lower montane areas at 50-1000 m elevation. We report an unrecorded taxon of the genus Ajuga in Korea, namely Ajuga nipponensis Makino. This taxon was discovered at Is. Nok, Boryeong-si, in Chungcheongnam Province. A. nipponensis is found to be distributed along roadsides near villages of the island. A. nipponensis was distinguishable from other Ajuga in Korea by following combination of characters: Stems erect or procumbent, arranged in a dense cluster, corolla whitish-pale pink, 10-12 mm long. This taxon was named 'Bun-hong-kkot-jo-gae-na-mul' in Korean based on color of the corolla. The key to the genus Ajuga in Korea is also provided.

A taxonomic study on Daucus species vegetated in islands off the Korean Peninsula (한반도 도서 지역에 서식하는 당근류의 분류학적 고찰)

  • Lee, Byoung-Yoon;Kwon, Sun Gyo;Oh, Kyoung-Hee
    • Korean Journal of Plant Taxonomy
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    • v.34 no.4
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    • pp.287-295
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    • 2004
  • Daucus species vegetated in the island Dae-heug-san-do off the Korean Peninsula has been recorded as Daucus littoralis Sibth. et Sm. var. koreana Nakai, endemic to Korea in several flora. However, the name was revealed as a naked name, nomen nudum, because the valid publication and type specimens were found anywhere. Comparative observation on morphological characters between the Korean taxon of Daucus and D. littoralis reveals that the Korean vegetated in the island Dae-heug-san-do is not the D. littoralis, but the D. carota L. subsp. carota. The Korean name of the latter is designated newly as San-dang-geun. The new korean name, Seon-dang-geun, of the unrecorded taxon, D. carota subsp. maritimus (Lam.) Batt., is also given.

Characteristics of Vascular Plants in Yongyangbo Wetlands

  • Cho, Kwang-Jin;Paik, Weon-Ki;Lee, Jeonga;Lim, Jeongcheol;Lee, Changsu;Chu, Yeounsu
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • v.2 no.3
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    • pp.153-165
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    • 2021
  • The objective of this study was to provide basic data for the conservation of wetland ecosystems in the Civilian Control Zone and the management of Yongyangbo wetlands in South Korea. Yongyangbo wetlands have been designated as protected areas. A field survey was conducted across five sessions between April 2019 and August of 2019. A total of 248 taxa were identified during the survey, including 72 families, 163 genera, 230 species, 4 subspecies, and 14 varieties. Their life-forms were Th (therophytes) - R5 (non-clonal form) - D4 (clitochores) - e (erect form), with a disturbance index of 33.8%. Three taxa of rare plants were detected: Silene capitata Kom. and Polygonatum stenophyllum Maxim. known to be endangered species, and Aristolochia contorta Bunge, a least-concern species. S. capitata is a legally protected species designated as a Class II endangered species in South Korea. A total of 26 taxa of naturalized plants were observed, with a naturalization index of 10.5%. There was one endemic plant taxon (Salix koriyanagi Kimura ex Goerz). In terms of floristic target species, there was one taxon in class V, one taxon in Class IV, three taxa in Class III, five taxa in Class II, and seven taxa in Class I. Three invasive alien species (Ambrosia trifida L., Ambrosia artemisiifolia L., and Humulus japonicus Siebold & Zucc) were observed. For continuous conservation of Yongyangbo Wetlands, it is necessary to remove invasive alien plants and block the inflow of non-point pollutants.