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Useful Temperate Plants

Rumex obtusifolius

L.

Polygonaceae

+ Synonyms

Acetosa obtusifolia (L.) M.Gómez

Lapathum obtusifolium (L.) Moench

Rumex crispatulus Michx.

Rumex ecuadoriensis Rech.f.

Rumex friesii Gren. & Godr.

Rumex laevigatus Willd. ex Spreng.

Rumex macropterus Ehrenb. ex Meisn.

Rumex megalophyllus Gand.

Rumex patens Meisn.

Rumex purpureus Poir.

Rumex rugelii Meisn.

Rumex sepium M.Bieb. ex Schult. & Schult.f.

Rumex subulatus Rech.

Rumex wallrothii Nyman

Common Name: Round-Leaved Dock

No Image.

General Information

Rumex obtusifolius is a herbaceous perennial plant growing from a large, vertical rootstock up to 15mm in diameter ; the erect stems can grow around 60 - 120cm tall, occasionally to 150cm[
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.
,
365
Title
Flora of New South Wales
Publication
 
Author
 
Website
http://plantnet.rbgsyd.nsw.gov.au/floraonline.htm
Publisher
 
Year
0
ISBN
 
Description
An on-line resource giving a brief botanical description of all the native plants of New South Wales, their habitat and range, together with diagrams and photographs of the plants.
].
The plant is harvested from the wild for local use as a food, medicine and source of materials. It has at times been grown for local use as an edible leaf.
Rumex obtusifolius is widespread as a weed, having been carried by human activity far beyond its native range.

Known 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 References

17
Title
Flora of the British Isles.
Publication
 
Author
Clapham, Tutin and Warburg.
Publisher
Cambridge University Press
Year
1962
ISBN
-
Description
A very comprehensive flora, the standard reference book but it has no pictures.
,
270
Title
Flora of N. America
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/fna/
Publisher
 
Year
0
ISBN
 
Description
An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.

Range

Eurasia - from the Atlantic coast to western Siberia, the Caucasus and Iran. N. Africa - Algeria

Habitat

Waste ground, hedgerows and field margins[
17
Title
Flora of the British Isles.
Publication
 
Author
Clapham, Tutin and Warburg.
Publisher
Cambridge University Press
Year
1962
ISBN
-
Description
A very comprehensive flora, the standard reference book but it has no pictures.
]. A common weed of cultivated land on acid or calcareous soils[
12
Title
Britain's Wild Larder.
Publication
 
Author
Loewenfeld. C. and Back. P.
Publisher
David & Charles; Newton Abbot.
Year
 
ISBN
0-7153-7971-2
Description
A handy pocket guide.
]. Waste places, roadsides, fields, shores, meadows, wet woods, swamps; at elevations up to 2,300 metres[
270
Title
Flora of N. America
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/fna/
Publisher
 
Year
0
ISBN
 
Description
An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].

Properties

Weed PotentialYes
Edibility Rating *
Medicinal Rating *  *
HabitPerennial
Height1.00 m
PollinatorsWind
Cultivation StatusCultivated, Wild

Cultivation Details


Requires a good soil[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
].
Plants are occasionally cultivated for their edible leaves[
61
Title
A Dictionary of Plants Used by Man.
Publication
 
Author
Usher. G.
Publisher
Constable
Year
1974
ISBN
0094579202
Description
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
].
Being wind -pollinated, Rumex species usually hybridize readily, especially with other members of the genus they are more closely related to[
74
Title
Flora of the USSR.
Publication
 
Author
Komarov. V. L.
Website
http://www.biodiversitylibrary.org
Publisher
Israel Program for Scientific Translation
Year
1968
ISBN
-
Description
An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet.
].
A very important food plant for the caterpillars of many species of butterfly[
30
Title
Butterflies and Moths in Britain and Europe.
Publication
 
Author
Carter D.
Publisher
Pan
Year
1982
ISBN
0-330-26642-x
Description
An excellent book on Lepidoptera, it also lists their favourite food plants.
].
This species is an alternative host of the turnip fly[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
].

Edible Uses

Young leaves - cooked[
8
Title
Free for All.
Publication
 
Author
Ceres.
Publisher
Thorsons Publishers
Year
1977
ISBN
0-7225-0445-4
Description
Edible wild plants in Britain. Small booklet, nothing special.
,
22
Title
Alternative Foods.
Publication
 
Author
Sholto-Douglas. J.
Publisher
 
Year
 
ISBN
 
Description
Not very comprehensive, it seems more or less like a copy of earlier writings with little added.
,
46
Title
Dictionary of Economic Plants.
Publication
 
Author
Uphof. J. C. Th.
Publisher
Weinheim
Year
1959
ISBN
-
Description
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
,
61
Title
A Dictionary of Plants Used by Man.
Publication
 
Author
Usher. G.
Publisher
Constable
Year
1974
ISBN
0094579202
Description
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
]. A bitter taste, especially if the older leaves are used[
105
Title
Tanaka's Cyclopedia of Edible Plants of the World.
Publication
 
Author
Tanaka. T. & Nakao S.
Publisher
Keigaku Publishing; Tokyo
Year
1976
ISBN
-
Description
The most comprehensive list of edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.
,
183
Title
Cornucopia - A Source Book of Edible Plants.
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications
Year
1990
ISBN
0-9628087-0-9
Description
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
]. The leaves are usually cooked in at least one change of water in order to reduce the bitterness[
183
Title
Cornucopia - A Source Book of Edible Plants.
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications
Year
1990
ISBN
0-9628087-0-9
Description
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
]. Leaves can also be dried for later use[
12
Title
Britain's Wild Larder.
Publication
 
Author
Loewenfeld. C. and Back. P.
Publisher
David & Charles; Newton Abbot.
Year
 
ISBN
0-7153-7971-2
Description
A handy pocket guide.
]. The leaves have a much milder flavour when they are first produced in early spring[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Young stems - cooked[
257
Title
Native American Ethnobotany
Publication
 
Author
Moerman. D.
Publisher
Timber Press. Oregon.
Year
1998
ISBN
0-88192-453-9
Description
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
].

Seed - raw or cooked[
102
Title
Native Harvests.
Publication
 
Author
Kavasch. B.
Publisher
Vintage Books
Year
1979
ISBN
0-394-72811-4
Description
Another guide to the wild foods of America.
,
172
Title
Discovering Wild Plants - Alaska, W. Canada and the Northwest.
Publication
 
Author
Schofield. J. J.
Publisher
Alaska Northwest Books; Alaska
Year
2003
ISBN
0882403699
Description
A nice guide to some useful plants in that area.
]. The seed can also be ground into a powder and used to make a gruel or added to cereal flours when making bread etc[
102
Title
Native Harvests.
Publication
 
Author
Kavasch. B.
Publisher
Vintage Books
Year
1979
ISBN
0-394-72811-4
Description
Another guide to the wild foods of America.
]. It is rather small and fiddly to harvest.

Medicinal

The leaves are often applied externally as a rustic remedy in the treatment of blisters, burns and scalds[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
14
Title
Complete Guide to Herbs.
Publication
 
Author
Holtom. J. and Hylton. W.
Publisher
Rodale Press
Year
1979
ISBN
0-87857-262-7
Description
A good herbal.
].

The root contains tannin and is astringent and blood purifier[
257
Title
Native American Ethnobotany
Publication
 
Author
Moerman. D.
Publisher
Timber Press. Oregon.
Year
1998
ISBN
0-88192-453-9
Description
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. A tea made from the roots has been used in the treatment of jaundice, whooping cough, boils and bleeding[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
257
Title
Native American Ethnobotany
Publication
 
Author
Moerman. D.
Publisher
Timber Press. Oregon.
Year
1998
ISBN
0-88192-453-9
Description
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. An infusion of the root has been used as a wash, especially for children, to treat skin eruptions[
257
Title
Native American Ethnobotany
Publication
 
Author
Moerman. D.
Publisher
Timber Press. Oregon.
Year
1998
ISBN
0-88192-453-9
Description
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. One report says that the root has been used as a contraceptive to stop menstruation[
257
Title
Native American Ethnobotany
Publication
 
Author
Moerman. D.
Publisher
Timber Press. Oregon.
Year
1998
ISBN
0-88192-453-9
Description
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
].
The root is harvested in early spring and dried for later use[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
].

Other Uses

Yellow, dark green to brown and dark grey dyes can be obtained from the roots of this plant[
14
Title
Complete Guide to Herbs.
Publication
 
Author
Holtom. J. and Hylton. W.
Publisher
Rodale Press
Year
1979
ISBN
0-87857-262-7
Description
A good herbal.
,
168
Title
Nature's Colors - Dyes from Plants.
Publication
 
Author
Grae. I.
Publisher
MacMillan Publishing Co. New York.
Year
1974
ISBN
0-02-544950-8
Description
A very good and readable book on dyeing.
]. They do not need a mordant[
168
Title
Nature's Colors - Dyes from Plants.
Publication
 
Author
Grae. I.
Publisher
MacMillan Publishing Co. New York.
Year
1974
ISBN
0-02-544950-8
Description
A very good and readable book on dyeing.
].

Propagation

Seed - sow spring in situ.
Division in spring.
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2022-10-07. <temperate.theferns.info/plant/Rumex+obtusifolius>

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