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Rumex brownii

Common name:	Swamp Dock	Family:	Polygonaceae
Author:	Campd.	Botanical references:	154, 265
Synonyms:
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].
Range:	Australia - New South Wales, Queensland, South Australia, Tasmania, Victoria. Casual in Britain[17].
Habitat:	Moist places such as the banks of creeks, often in clay soils, in the montane and sub-alpine zones[154]. Often found as a weed of damp lawns and pastures in Australia[193].
Edibility Rating (1-5):	2	Medicinal Rating (1-5):	0

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	R. brownei[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Browne's Dock [P,B],
Systematics:	From a USDA Plants Database
	Order: Polygonales. Buckwheat family

Physical Characteristics

Perennial growing to 0.6m. . It is in flower from September to November. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Wind. We rate it 2/5 for edibility and 0/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Lawn, Bog Garden, Cultivated Beds.

Edible Uses

Coffee Leaves.

Leaves - cooked[144]. The leaves can be up to 30cm long and, cooked with their midrib removed, they make a fine substitute for leaf beet[193].
The roasted root is a coffee substitute[193]

Medicinal Uses

Disclaimer

None known

Other Uses

Dye.

A rich yellow dye is obtained from the root if it is fixed with alum[193].
Although no specific mention has been made for this species, dark green to brown and dark grey dyes can be obtained from the roots of many species in this genus, They do not need a mordant[168].

Cultivation details

Succeeds in most soils but prefers a deep fertile moderately heavy soil that is humus-rich, moisture-retentive but well-drained and a position in full-sun or part shade[200].
This species is sometimes introduced into Britain via bales of wool from Australia and it then persists for a few years[17].

Propagation

Seed - sow spring in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer.
Division in spring.

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for Rumex brownei (a possible synonym).

[B] Data (Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.

References for the family Polygonaceae.

[CHINA] Draft Data Very detailed botanical/identification info. from the Flora of China.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[17] Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press 1962
A very comprehensive flora, the standard reference book but it has no pictures.

[144] Cribb. A. B. and J. W. Wild Food in Australia. Fontana 1976 ISBN 0-00-634436-4
A very good pocket guide.

[154] Ewart. A. J. Flora of Victoria.
A flora of eastern Australia, it is rather short on information that is useful to the plant project.

[168] Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974 ISBN 0-02-544950-8
A very good and readable book on dyeing.

[193] Low. T. Wild Food Plants of Australia. Angus and Robertson. 1989 ISBN 0-207-14383-8
Well presented, clear information and good photographs. An interesting read for the casual reader as well as the enthusiast

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[238] Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
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.

[265] Carolin. R. & Tindale. M. Flora of the Sydney Region Reed. Australia. 1993 ISBN 0730104001
Concise flora with little beyond an extensive key, species descriptions, very brief habitat description.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
WEB search engine by Rich Morris - Home Page- Contact Info
Blagdon Cross, Ashwater, Beaworthy, Devon, EX21 5DF, UK.
Website: www.pfaf.org Phone: 0845 458 4719/_44(0) 1208 872963

This page (UK) http://www.comp.leeds.ac.uk/cgi-bin/pfaf/arr_html?Rumex+brownii
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