• Proceedings of the Botanical Society of Korea Conference
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• 2001.04a
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• pp.19-19
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• 2001

• Journal of the Korean Society of Environmental Restoration Technology
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• v.6 no.1
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• pp.41-50
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• 2003

The feasibility as floricultural crops and water garden plant materials of Korean native water plants was investigated. Propagation type, growing and flowering time were observed for development as water garden, interior aquarium plant and water purification materials. Flowering time of the water plant was 7 species in May, 28 species in June, 49 species in July, 55 species in August, 47 species in September, and 17 species in October. Beautiful flowering water plants were Nymphaeaceae, Nymphoides peltata, Nymphoides indica, Monochoria korsakowii, Iris pseudacorus, Iris laevigata, and etc. Ornamental leafy water plants were Ceratopteris thalictroides, Ludwigia ovalis, Myriophyllum verticillatim, Limnophila sessiliflora, Blyxa aubertii, Blyxa echinosperma, Vallisneria asiatica, Hydrilla verticillata and Eleocharis acicularis etc. Isoetes japonica, Isoetes coreana and Isoetes sinensis were propagated by spore. Blyxa aubertii, Blyxa echinosperma, Myriophyllum verticillatim, Nuphar japonicum, Nelumbo nucifera, Ottelia alismoides, Sagittaria aginashi, Trapa japonica, and Trapa natans were propagated by seed. Persicaria amphibia, Ceratophyllum demersum (hornwort), Myriophyllum verticillatim, Myriophyllum spicatum, Oenanthe javanica, Potamogeton crispus, Hydrilla verticillata and Acorus calamus were propagated by division. And Vallisneria asiatica, Hydrilla verticillata and Phragmites japonica were propagated by runner. Ceratophyllum demersum (hornwort), Myriophyllum verticillatim, Myriophyllum spicatum, Limnophila sessilifera were propagated by adventitious bud. Ceratopteris thalictroides was propagated by leaf cutting. The 35 genera, 68 species of water plants were available for horticultural use. The 45 species such as Iris laevigata, Eleocharis acicularis, Menyanthes trifoliata, Nymphaea minima, Nuphar pumilum, Nymphoides coreana, Nymphoides peltata, Nymphoides indica, Nymphaea tetragona (water lily), and Typha latifolia could be use for water garden plant. The 21 species such as Limnophila sessilifera, Vallisneria asiatica, Ceratophyllum demersum and Hydrilla verticillata available for indoor aquarium. The 19 species such as Ottelia alismoides, Oenanthe javanica, Limnophila sessilifera and Blyxa echinosperma could be culture in container. The 27 species such as Trapa japonica, Trapa incisa, Phramites commuris (reed), Phragmites japonica, and Zizania latifolia were usable for water purification plant materials.

• The Korea Journal of Herbology
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• v.31 no.4
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• pp.19-25
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• 2016

Objective : For the purpose of developing Korean herbology of the plants to Nymphaeaceae in Korea, the literatures of the successive generations have been thoroughly investigated to prepare this article.Methods : Books and research papers about Herbology which published at home and abroad were examined.Results : A list was made about Nymphaeaceae plant which were cultivated or grew naturally in Korea, after investigated the data on domestic and foreign Nymphaeaceae plants. Out of those lists, serviceable plants were selected and with those available plants, their distributions were analysed and parts which can be used as medicines were divided into 3 categories such as oriental medicine name, scientific name and non-official name. Nymphaeaceae's properties flavor, channels they use, effects, and toxicity were also noted. Nymphaeaceae (grew in Korea) were divided into 6 classes with 10 species. Out of those, 5 classes with 5 species were found serviceable which indicates 50% of all. Out of all 10 species of Nymphaeaceae family, Nuphar genus were found 4 species, which were shown the most. Among 5 genus of Nymphaeceae species, medicinal plants were all one species each. Out of all serviceable parts in Nymphaeaceae, Etc parts took first place as 10 species. There are no toxic, the survey said.Conclusion : There were totaled to 6 genera and 10 species in Dioscoreaceae in Korea and among them medicinal plants are 5 genera, 5 species, some 50% in total.

• The Korean Journal of Ecology
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• v.19 no.3
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• pp.209-216
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• 1996

In order to identify the habitat characteristics of water shield (Brasenia schreberi), water quality and sediment characters were investigated. Water shield had peculial habitats such as old reservoir, developed basin-like reservior, a water depth within 1.5 m, constant water level, and thick sediment layer at the bottom. The species had very dense populations under the favorable growing conditions and occasionally grew together with Utricularia japonica. When water shield decreased, Nelumbo nucifera, Nuphar japonicum and Zizania latifolia increased. Natural populations of water shield need protection because it is endangered by the human activities and their harvest. The optimal conditions for the growth of water shield was near neutral pH. low conductivity and low turbidity. Therefore the input of pollutants should be controlled for its growth. The inorganic ion contents such as K, Mg, and Na were higher in the water shield growing area. Especially iron content of the sediments in the reservoirs with water shield was nearly five times as high as that in the reservoirs without water shield. thus iron might be one of the major limiting factors for the growth. It was considered that molybdenum can be another major factor because water shield is a nitrogen fixing plant.

• Journal of Environmental Science International
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• v.29 no.6
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• pp.579-603
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• 2020

In order to provide fundamental information about the floristic composition of the area along with an assessment of the environmental impact, a floristic study of the vascular plants in the Tamjin River estuary in Gangjin-gun was conducted for a total of nine days, in the period from June 2014 to September 2014. We found that the vascular plants in this region comprised 424 taxa belong to 102 families, 281 genera, 390 species, 5 subspecies, 26 varieties, and 3 forma. Five taxa of Korean endemic plants including Weigela subsessilis (Nakai) L.H.Bailey, Lespedeza maximowiczii var. tricolor (Nakai) Nakai, and Clematis trichotoma Nakai were collected. Two least concern (LC) taxa of rare plants (as designated by the Korea Forest Service) were collected: Hydrocharis dubia (Blume) Backer and Platycladus orientalis (L.) Franco. Ten the floristic regional indicator taxa from the third to the fifth grade were identified: two taxa belonged to grade IV, and eight taxa belonged to grade III. Twenty-four taxa of salt-tolerant plants, including Artemisia fukudo Makino, Carex rugulosa Kuk., and Suaeda glauca (Bunge) Bunge, as well as 44 taxa of aquatic plants, including Najas marina L., Nuphar oguraensis Miki, and Nymphoides indica (L.) Kuntze, were investigated in this region. Fifty-nine taxa of naturalized plants were recorded, among which the following six taxa were plants that caused ecosystem disturbance: Ambrosia artemisiifolia L., Humulus scandens (Lour.) Merr., Lactuca scariola L., Rumex acetosella L., Solidago altissima L., and Symphyotrichum pilosum (Willd.) G.L.Nesom.

• Korean Journal of Weed Science
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• v.2 no.2
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• pp.169-174
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• 1982

The distribution of major aquatic weeds in irrigation and drainage canals along Dongjin river and the degree of infestation of aquatic weeds were investigated throughout Korea, and chemical control of aquatic weeds was also studied. The major aquatic weed species in irrigation and drainage canals along Dongjin river were Leersia japonica, Ceratophyllum demersum, Zijania latifolia, Nuphar japonicum, Phragmites communis, Vallisneria asiatica, Trapa natans, Myriophyllum verticillatum, and Potamogeton crispus. Zijania latifolia, Phragmites communis, and Leersia japonica were troublesome weeds among emerged weeds throughout Korea. Caratophyllum demersum was most serious weed and Myriophyllum verticillatum, Potamogeton crispus, Vallisneria asiatica, and Potamogeton oxyphyllus were also heavily infested among submerged weeds. Leersia japonica was controlled by paraquat at 73.5g/10a glyphosate at 91.5g/10a, and fluridone at 74.7g/10a, Zijania latifolia by paraquat at 220.5g/10a, glyphosate at 366.0g/10a, and fluridone at 74.7g/10a, and Ceratophyllum demersum and Potamogeton crispus by 2,4,5-TP at 540g/10a and fluridone at 1008/10a.

• Korean Journal of Environmental Agriculture
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• v.22 no.2
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• pp.153-165
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• 2003

This study was conducted to get some information on plants abilities to enhance water purification and to find out away to conserve the ecosystem in Mankyeong river. Vegetation were surveyed at 4 sites pointing by 1:5,000 topographical map, from June 2001 through March 2002. T-N content in water were high in all sites of Mankyeong river, the average T-N levels were 8.59 and 17.23 mg/L, summer and winter, respectively. The average T-P level during summer was 0.47 mg/L but that was 1.79 mg/L during winter. The BOD level in Mankyeong upstream ranged from 0.95 to 2.57 mg/L which would be in I or II grade according to water quality criteria by Ministry of Environment but BOD level in Mankyeong downstream ranged from 6.87 to 9.72 mg/L. The plant species of river flora were found 251, 98 and 85, upstream midstream and down stream, respectively. Among the surveyed plants, Ceratophyllum demersum, submerged plant and Nuphar subinteperrimum took up higher contents of phosphate and nitrogen than other piano. The Phragmites communis and Zizania latifolia having much biomass were thought to be suitable plants for enhancement of e natural water purification.