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Polygonaceae FAMILY

Rumex japonicus

Rumex japonicus

Edibility
2/5
Medicinal
1/5

Safety & Hazards

Plants can contain quite high levels of oxalic acid, which is what gives the leaves of many members of this genus an acid-lemon flavour. Perfectly alright in small quantities, the leaves should not be eaten in large amounts since the oxalic acid can lock-up other nutrients in the food, especially calcium, thus causing mineral deficiencies. The oxalic acid content will be reduced if the plant is cooked. People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition[ 238 Title Encyclopaedia of Herbs and their Uses. Publication Author Bown. D. Publisher Dorling Kindersley, London. Year 1995 ISBN 0-7513-020-31 Description A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant. ].

Botanical Description

Rumex japonicus is a herbaceous perennial plant growing from a taproot. The erect stems can be 50 - 100cm tall[ 266 Title Flora of China Publication Author Website http://flora.huh.harvard.edu/china/ Publisher Missouri Botanical Garden Press; St. Louis. Year 1994 ISBN Description An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available. ]. The plant is harvested from the wil for local use as a food and dye. The young shoots are sold in local food markets in Korea[ 1665 Title Wild Food Plants in South Korea; Market Presence, New Crops, and Exports to the United States Publication Economic Botany, Vol. 50, No. 1 (Jan. - Mar., 1996), pp. 57-70 Author Pemberton R.W. & Nam Sook Lee Website http://www.jstor.org/stable/4255805 Publisher Year 1996 ISBN Description ].

Habitat & Origin

Origintemperate
Native RangeE. Asia - Russian Far East, China, Japan, Korea.
HabitatWet meadows and ditches in lowland all over Japan[ 58 Title Flora of Japan. (English translation) Publication Author Ohwi. G. Publisher Smithsonian Institution Year 1965 ISBN - Description The standard work. Brilliant, but not for the casual reader. ]. Field margins, streambanks and wet valleys; at elevations from sea level to 3,400 metres[ 266 Title Flora of China Publication Author Website http://flora.huh.harvard.edu/china/ Publisher Missouri Botanical Garden Press; St. Louis. Year 1994 ISBN Description An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available. ].