• Korean Journal of Plant Taxonomy
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• v.45 no.1
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• pp.8-11
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• 2015

A new species, Fimbristylis drizae J. Kim & M. Kim, is named and described from Sucheong Lake, Jeongeup-si, Jeollabuk-do, Korea. Fimbristylis drizae shares several characters (five-angled culm, 1-2 bladeless sheath, and compound anthela inflorescence) with the related species F. diphylloides Makino. It is, however, distinct from F. diphylloides, which has two to three stigmas, ovate spikelets, two stamens, a blackish brown scale, and a roadside habitat. In contrast, the new species has two stigmas, oval spikelets, one (or rarely two) stamens, a yellowish brown scale, and a lakeside habitat.

• Korean Journal of Plant Taxonomy
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• v.44 no.2
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• pp.81-83
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• 2014

An unrecorded species, Carex rugata Ohwi, was found in Jeollabuk-do and Jeollanam-do. This species is distinguished from Carex breviculmis R. Br., C. mitrata Franch., C. polyschoena H. Lev. & Vaniot, C. genkaiensis Ohwi, C. formosensis H. Lev. & Vaniot and C. kamagariensis K. Okamoto by having achenes with excavated faces. Carex rugata Ohwi was named 'Ju-reum-cheong-sa-cho' in Korean based on its specific epithet. In this study, a description, illustrations and photographs of the species are provided.

• Korean Journal of Plant Taxonomy
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• v.45 no.2
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• pp.169-172
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• 2015

Eleocharis parvula (Roem. & Schult.) Bluff, Nees & Schauer (Cyperaceae), was found in Ganghwa-gun, Incheon Metropolitan City in Korea. This species is distinguished from related taxa in Korea by its small fusiform tubers, culms without septa when dry, 3-fid stigmas and style base confluent with the apex of achene. This taxon was named 'Gaet-ba-neul-gol' in Korean based on its habitat. We provide its description, illustrations, photographs and a key to the related taxa in Korea.

• Korean Journal of Plant Taxonomy
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• v.48 no.4
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• pp.301-330
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• 2018

A morphological study of Korean Fimbristylis was conducted in order to clarify the taxonomical position and scientific names among species. It was determined that the anther size and style length are important characteristics for the species-level identification of Fimbristylis. It was confirmed that Fimbristylis ovata (Burm.f.) J. Kern, which is recorded in the literature but which has no sampling specimens in Korea, grows on the grassland on Marado Island. According to this study, the genus Fimbristylis in Korea is classified into a total of 21 taxa, including four sections, nineteen species, and two varieties.

• Agrochemical news magazine
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• v.25 no.3 s.196
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• pp.18-21
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• 2004

• Korean Journal of Construction Engineering and Management
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• v.22 no.3
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• pp.52-60
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• 2021

Due to the significant size of overseas construction projects, the cost overrun has enormous impacts on the financial status of construction companies. The managers' appropriate perception and identification of key risk factors in the construction phase notably affect the performance of projects. However, the actual impacts of risk factors and local manager' s perception of them could be deviated. For this reason, we aim to compare the performance of actual cases and general opinions of responsible practitioners in terms of risk factors relevant to cost overruns in order to present a practical strategy for risk management. Firstly, factors classified from literature review were used to simulate 290 cost overruns data sets from 20 cases by introducing Monte-Carlo Simulation and were ranked by standardized coefficients through multiple regression analysis. Secondly, a survey was conducted against 42 local managers to rank their perception of impact on cost overrun with identical factors by using Stepwise Weight Assessment Ratio Analysis (SWARA). Comparison results show that conflicts such as 'conflict with subcontractors' and 'conflict with the local community' have caused excessive cost overrun. However, managers' perception of these as less significant than the actual influences and consider other risks such as 'material price fluctuation' and 'construction quality errors', as relatively serious. Therefore, education for local managers on conflict risks needs to be presented.

• Korean Journal of Plant Taxonomy
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• v.46 no.2
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• pp.267-271
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• 2016

A newly recorded species, Schoenoplectiella ${\times}$uzenensis (Ohwi ex T. Koyama) Hayasaka, was found in Chosan Lake, Gosu-myeon, Gochang-gun, Jeollabuk-do, Korea. Schoenoplectiella ${\times}$uzenensis differs from its related species in having short rhizomes and 1 to 3 spikelets showing inflorescence. Schoenoplectiella triangulata has very short rhizomes and 520 spikelets with inflorescence. Schoenoplectiella lineolata has long creeping rhizomes and 1 spikelet showing inflorescence. We propose the new Korean name of 'Go-Chang-Go-Rang-Ei' based on its initial collection site. A description, line drawing, color photographs, table, and a species key of Korean Schoenoplectiella are provided for species identification.

• Korean Journal of Plant Taxonomy
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• v.43 no.4
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• pp.296-299
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• 2013

A newly recorded species, Fimbristylis hookeriana Boeckeler, was found in Gyema-ri, Hongnongeup, Yeonggwang-gun, Jeollanam-do and Munyeo-do Is., Gunsan-si, Jeollabuk-do, Korea. Fimbristylis hookeriana is closely related to F. dichotoma, which has ovoid spikelets, deciduous scales, pubescent culms, and short style. However, this species is distinguished by very narrowly ovoid spikelets, persistent scales, glabrous culms, and long style. We propose a new Korean name, 'Ba-Wi-Ha-Neul-Ji-Gi', meaning that this inhabits on dried rocks near seashore. Redescription, illustrations, photographs, table, and a key to species of the Fimbristylis Vahl in Korea are provided.

• Korean Journal of Plant Taxonomy
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• v.46 no.1
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• pp.124-127
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• 2016

Carex poculisquama $K{\ddot{u}}k$., recorded only in the literature in Korea, was confirmed to be distributed in limestone zones in the country. Carex poculisquama is most similar to species in the section Occlusae, such as C. ligulata Nees, but it differs in its rhombic-elliptic perigynium and by the presence of short hairs on the veins of its utricles. We provide here a description, illustrations, and photographs of C. poculisquama and a key to the species.

• Korean Journal of Plant Taxonomy
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• v.43 no.1
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• pp.22-26
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• 2013

We report somatic chromosome numbers 2n = 12 for three Carex sect. Siderostictae Franch. ex Ohwi (Cyperaceae) from Korean populations: Carex ciliatomarginata Nakai, C. okamotoi Ohwi, and C. siderosticta Hance. This study is the first chromosome number report for the species C. ciliatomarginata from Korean populations. As found in other Carex species, all the chromosomes examined in the section exhibit nonlocalized centromere (polycentric or holocentric) and large (more than ca. $1{\mu}m$ long) chromosomes. Considering the basal phylogenetic position of the section in tribe Cariceae Pax, small numbers of large chromosomes have been hypothesized as primitive characters in Cariceae, and our observation supports the hypothesis. Further investigations of chromosomes in Carex are needed for a better understanding of species richness in the genus.