• Korean Journal of Plant Resources
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• v.28 no.4
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• pp.475-486
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• 2015

This survey was conducted in order to investigate the vascular plants of Hak Reservoir Valley in the DMZ Area, Korea. The vascular plants were collected six times (from April 2014 to November 2014) and consisted a total of 238 taxa; 69 families, 172 genera, 206 species, 2 subspecies, 26 varieties and 4 forms. The observed rare plant species as designated by Korea Forest Service were 3 taxa including Carex capricornis Meinsh. ex Maxim., Acorus calamus L., Penthorum chinense Pursh. Endemic plant species were 2 taxa including Salix koriyanagi Kimura, Clematis brachyura Maxim. 17 taxa were listed as specific plant species based on phytogeographical in the investigated area. 25 taxa were recorded as naturalized plants, and their Naturalization Ratio and Urbanization Index were recorded as 10.46%, and 7.78%, respectively. Of the 238 taxa listed; 105 were pasturing plants, 92 edible plants, 76 medicinal plants, 24 ornamental plants, 6 stain plants, 4 timber plants, 2 fiber plants, 2 industrial plants and 55 unknown plants.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.25-25
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• 2018

본 연구는 경상북도 봉화군에 위치한 문수산 일대의 관속식물상을 파악하고자 수행되었다. 2010년 3월부터 2017년 11월까지 계절별 출현식물을 대상으로 총 12회에 걸쳐 조사를 실시하였다. 조사지 내 관속식물은 85과 241속 372종 5아종 58변종 7품종으로 총 442분류군이 분포하는 것으로 조사되었으며, 이는 경상북도 관속식물 1,684분류군(Korea National Arboretum, 2016)의 26.2%, 한반도 관속식물 4,499 분류군(Korea National Arboretum, 2018; Http://www.nature.go.kr/kpni/)의 9.8%에 해당되는 것으로 분석되었다. 문수산 일대의 한국특산식물은 12분류군(세잎승마, 할미밀망, 은꿩의다리, 노랑갈퀴, 고려엉겅퀴 등), 산림청 지정 희귀식물은 VU등급(주목, 백작약, 꼬리진달래 등) 5분류군, LC등급(쥐방울덩굴, 도깨비부채, 태백제비꽃, 꽃개회나무 등) 10분류군으로 총 15분류군이 분포하는 것으로 조사되었다. 또한, 식물구계학적 특정식물 V등급 2분류군, IV등급 5분류군, III등급 16분류군, II등급 25분류군, I등급 30분류군, 외래식물은 서양벌노랑이, 토끼풀, 달맞이꽃, 미국가막사리, 개망초, 주걱개망초, 털별꽃아재비, 서양민들레, 오리새, 큰김의털 등 10분류군으로 도시화지수(%) 3.1%, 귀화율은 2.3%에 해당되는 것으로 조사되었다. 조사된 식물을 용도별로 구분하면 식용식물 338분류군(76.5%), 섬유용식물 3분류군(0.7%), 약용식물 75분류군(17.0%), 관상용식물 21분류군(4.8%), 목초용식물 95분류군(21.5%) 목재용식물 16분류군(3.6%) 등으로 분석되었다. 본 연구가 봉화군 문수산 일대의 효율적인 관리 및 보전 방안을 마련하기 위한 기초자료로 활용 될 것이라 기대한다.

• Mycobiology
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• v.48 no.6
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• pp.443-449
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• 2020

Two new species, Thelopsis ullungdoensis and Phylloblastia gyeongsangbukensis are described from Ullung-Do (Island), South Korea. The closest relatives from Europe and Korea are epiphytic Thelopsis flaveola which differs by their immersed or semi-immersed yellow ascomata, ascospores without halo and their habitat of smooth bark (mainly Fagus) in humid and cold climates. Thelopsis gangwondoensis differs by its bigger semi-immersed ascomata (600-700 ㎛ in diam.), oblong halonate ascospores (8-12 × 6-8 ㎛) and its habitat of smooth bark of deciduous trees. P. gyeongsangbukensis differs from its relatives within the genus in having 5-septate ascospores (22-26 × 6-8 ㎛), semi-immersed, subglobose ascomata with a flattened top (250-400 ㎛) and a thin, matt, uneven gray-brown to gray-green continuous thallus without isidia.

• Journal of Forest and Environmental Science
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• v.37 no.4
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• pp.304-308
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• 2021

Iris koreana (Iridaceae) is an endangered plant native to Korea. In order to develop an in vitro propagation method, we investigated the effect of 2,4-dichlorophenoxy acetic acid (2,4-D) and a-naphthalene acetic acid (NAA) on callus induction in different I. koreana tissues. In addition, we also investigated the effect of 2,4-D and Benzyl aminopurine (BA) treatments on adventitious shoot induction in viable calli and the effect of indole-3-butyric acid (IBA) on root formation in viable shoots. We found that callus production was highest with 1.0 mg/L NAA (94.4% cultured rhizome explants), and adding low concentrations of 2,4-D to BA containing media significantly increased the frequency of shoot primordial formation. The best rooting results were obtained with 1.0 mg/L IBA, on which 98% of regenerated shoots developed roots and produced an average of 7.4 roots within 45 days. This in vitro propagation protocol will be useful for conservation, as well as for mass propagation.

• The Korean Journal of Mycology
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• v.49 no.1
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• pp.21-31
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• 2021

Auricularia (Auriculariaceae, Basidiomycota) is well-known jelly fungi, and most species are cultivated or utilized medicinally around the world. A total of 127 Auricularia specimens were collected during Korean mushroom forays by the Korea National Arboretum from 2008 to 2020. In this investigation, fungal barcode analysis and morphological examinations of 33 specimens were conducted and five Korean Auricularia species were identified. Of the species identified, A. americana, A. heimuer, and A. villosula were new to Korea, while A. auricula-judae which was previously identified in Korea, was not found. Herein, we discuss the Korean Auricularia species and provide a taxonomic key for their morphological identification.

• Mycobiology
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• v.47 no.4
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• pp.355-367
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• 2019

Arthonia dokdoensis sp. nov., a lichenicolous fungus from the subcosmopolitan Arthonia molendoi complex growing on crustose thalli of species of the genus Orientophila (subfamily Xanthorioideae, Teloschistaceae), as well as the lichen species Rufoplaca toktoana sp. nov. (subfamily Caloplacoideae, Teloschistaceae) similar to Rufoplaca kaernefeltiana, both from Dokdo Islands, Republic of Korea, are described, illustrated, and compared with closely related taxa. In the phylogenetic tree of the Arthoniaceae based on 12S mtSSU and RPB2 gene sequences, the phylogenetic position of the A. dokdoensis and the relationship with the A. molendoi group are illustrated, while the position of the newly described R. toktoana is confirmed by phylogenetic tree based on ITS nrDNA data.

• Mycobiology
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• v.50 no.4
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• pp.213-218
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• 2022

The genus Mitrula (Mitrulaceae, Helotiales), as also known as swamp beacons, inhabits submerged, decaying vegetation in standing or decaying needles, twigs, leaves, and shallow water. They play an important role in carbon cycling in some freshwater ecosystems. In the herbarium of the Korea National Arboretum (KH), seven Mitrula specimens were collected during mushroom forays in the period from 2019 to 2021. The Korean collections were found to be macromorphologically closely related to M. paludosa and M. elegans, but micro-morphologically they could be distinguished by characteristics of slightly narrower asci and aseptate ascospores. Our molecular phylogenetic analyses of the internal transcribed spacer (ITS) and 28S rDNA regions also revealed that our specimens were related to M. paludosa and M. elegans, but formed a distinct clade. Based on these results, we reported our specimens as new to science and discussed the phylogeny and diversity of Mitrula species.

• Journal of Species Research
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• v.3 no.2
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• pp.183-194
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• 2014

As part of a study to understand the current status of Korean plant species propagated in foreign countries, we conducted extensive surveys on Korean living collections in the Arnold Arboretum of Harvard University, the oldest public arboretum in North America. Specifically, we collected and identified the voucher specimens of the living collections and further examined the collection databases to understand the history of how Korean plants were introduced to the Arboretum. We found that a total of 154 Korean taxa (belonging to 49 families and 81 genera) have been planted in the arboretum. Most plants originated from seeds that were directly collected in Korea or obtained via seed exchanges with botanical gardens in Asia, Europe, and U.S.A. Of the 154 taxa, 16 are Korean endemic species, and three are listed as endangered species. In addition, 62 taxa are as floristic regional indicator species of Korea used by the Ministry of Environment.

• Korean Journal of Plant Taxonomy
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• v.53 no.2
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• pp.79-101
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• 2023

Following recent taxonomic, distributional, and nomenclatural revisions, an updated checklist of endemic plants on the Korean Peninsula is needed. This study provides an updated checklist of vascular plants endemic to the Korean Peninsula and describes their distribution within administrative provinces. The revised checklist includes 373 endemic taxa (304 species, six subspecies, 49 varieties, and 14 nothospecies) from 179 genera and 64 families, representing 9.5% of the total native flora of the Korean Peninsula. Asteraceae (41 taxa), Ranunculaceae (29 taxa), Liliaceae s.l. (24 taxa), and Rosaceae (22 taxa) were the most widely represented families. Compared with the most recent checklist published in 2017, 39 taxa were excluded from the checklist; one taxon was excluded because it did not have a valid published name, seven taxa were excluded because their natural habitats extended to neighboring countries, four taxa were excluded because they were treated as a rank form, and 27 taxa were excluded because they had been identified as heterotypic synonyms of taxa distributed outside of the Korean Peninsula. Fifty-two new taxa were included based on the literature. This checklist will help to focus conservation efforts and provide a framework for research, protection, and policy implementation related to these endemic taxa.

• Korean Journal of Plant Resources
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• v.33 no.4
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• pp.404-416
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• 2020

Studies on the preservation and propagation of tropical and subtropical plants are required, but the studies are insufficient in Korea. Since 2013, the Tropical Plant Resources Research Center has been collaborating on field research and publication to preserve plant diversity in Myanmar protected areas and Sagging areas in cooperation with Ministry of Natural Resources and Environment Conservation and the Myanmar Forest Research Institute. This study is to provide information on cooperative projects. As a result of the joint research between the Korea National Arboretum and Myanmar, in December 2018, the Korea National Arboretum Tropical Plant Resources Research Center is on display for conservation and education purposes with the 65 Myanmar useful materials and specimens of 326 kinds of plants and specimens that Myanmar Forest Research Institute donated. This donation is the first case of Myanmar's export of plant organisms to a foreign country, and as for the Korea National Arboretum, it is the second official case of introducing a mass plant from foreign governments. The study will also accelerate preservation biodiversity and propagation methods of tropical and subtropical plants as well as research on biodiversity conservation and industrial use.