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Useful Tropical Plants

Sagittaria trifolia

L.

Alismataceae


There is considerable confusion between this species and Sagittaria sagittifolia L. We are adopting the treatment in the Flora of China[
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.
] and Kew's 'World Checklist of Selected Plant Families'. In this view of the species, S. sagittifolia is fully temperate in its range, being found through most of Europe and into west Asia. S. Trifolia is the species cultivated for its edible tubers. In Europe it is only found in far eastern Russia, but extends through much of temperate Asia into tropical southeast Asia.

+ Synonyms

Sagittaria chinensis Sims

Sagittaria doniana Sweet

Sagittaria edulis Schltdl.

Sagittaria hastate D.Don

Sagittaria hirundinacea Blume

Sagittaria japonica H.Vilm.

Sagittaria leucopetala (Miq.) Bergmans

Sagittaria macrophylla Bunge

Sagittaria obtusa Thunb.

Sagittaria sagittata Thunb.

Sagittaria sagittifolia alismifolia Makino

Sagittaria sagittifolia angustifolia Siebold

Sagittaria sagittifolia diversifolia M.Michel

Sagittaria sagittifolia edulis (Schltdl.) Siebold ex Miq.

Sagittaria sagittifolia leucopetala (Miq.) Hartog

Sagittaria sagittifolia leucopetala Miq.

Sagittaria sagittifolia longiloba Turcz.

Sagittaria sagittifolia sinensis (Sims) Makino

Sagittaria sagittifolia subaequilonga Regel

Sagittaria sinensis Sims

Common Name: Arrow Head

Sagittaria trifolia
The edible tubers
Photograph by: W. H. Hodge
Creative Commons License
Sagittaria trifolia Sagittaria trifolia Sagittaria trifolia Sagittaria trifolia Sagittaria trifolia Sagittaria trifolia

General Information

Arrow head is a herbaceous aquatic perennial that reaches a height of about 1 metre[
413
Title
Global Invasive Species Database
Publication
 
Author
 
Website
http://www.issg.org/database/welcome/
Publisher
 
Year
0
ISBN
 
Description
Very detailed information on almost 400 species (with more being added) of plants that have become weeds in areas outside their native range.
]. The arrow-shaped leaves are borne on triangular stalks that vary in length with the depth of the water in which the plant is growing[
413
Title
Global Invasive Species Database
Publication
 
Author
 
Website
http://www.issg.org/database/welcome/
Publisher
 
Year
0
ISBN
 
Description
Very detailed information on almost 400 species (with more being added) of plants that have become weeds in areas outside their native range.
].
The plant is commonly cultivated in southeast Asia and the Pacific Islands for the edible starchy rhizomes[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
].

Known Hazards

None known

Botanical References

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.

Range

Southern European Russia, through temperate Asia to tropical southeastern Asia in Malaysia, Indonesia and the Philippines.

Habitat

Ponds, lakes, marshes, paddy fields and channels[
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.
].

Properties

Edibility Rating *  *  *  *  *
Medicinal Rating *  *
HabitPerennial
Height1.00 m
PollinatorsInsects
Cultivation StatusCultivated, Wild

Cultivation Details

Found from the temperate zone through to the tropics. It grows best in areas where annual daytime temperatures are within the range 16 - 24°c, but can tolerate 12 - 28°c[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. When dormant, the plant can survive temperatures down to about -10°c, but young growth can be severely damaged at 0°c[
206
Title
Oriental Vegetables
Publication
 
Author
Larkcom J.
Publisher
John Murray
Year
1991
ISBN
0-7195-4781-4
Description
Well written and very informative.
,
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. It prefers a mean annual rainfall in the range 00 - 1,200mm, but tolerates 600 - 1,500mm[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
A pond or bog garden plant, it requires a moist or wet loamy soil in a sunny position[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
]. Grows best in a rich soil[
296
Title
Tropical Food Gardens
Publication
 
Author
Norrington. L.
Publisher
Bloomings Books (Melbourne)
Year
2001
ISBN
1-876473-41-x
Description
Excellent little book giving some basic information on a range of plants.
]. Prefers shallow, still or slowly flowing water up to 30 - 60cm deep[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Prefers a pH in the range 6 - 7.5, tolerating 5.5 - 8.2[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
The plant requires at least a six month growing season in order to produce a crop[
206
Title
Oriental Vegetables
Publication
 
Author
Larkcom J.
Publisher
John Murray
Year
1991
ISBN
0-7195-4781-4
Description
Well written and very informative.
].
Average yields can be 12 - 15 tonnes per hectare[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
A polymorphic species, the sub-species S. trifolia leucopetala is the form extensively cultivated for its edible tubers in China and other parts of Asia[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
56
Title
Complete Guide to Water Plants.
Publication
 
Author
Muhlberg. H.
Publisher
E. P. Publishing Ltd.
Year
1982
ISBN
0-7158-0789-7
Description
Deals with a wide range of plants for temperate areas (and indoor aquaria) with quite a lot of information on cultivation techniques.
,
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.
,
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.
].

Edible Uses

Root - cooked[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
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.
,
13
Title
Hamlyn Encyclopaedia of Plants.
Publication
 
Author
Triska. Dr.
Publisher
Hamlyn
Year
1975
ISBN
0-600-33545-3
Description
Very interesting reading, giving some details of plant uses and quite a lot of folk-lore.
,
56
Title
Complete Guide to Water Plants.
Publication
 
Author
Muhlberg. H.
Publisher
E. P. Publishing Ltd.
Year
1982
ISBN
0-7158-0789-7
Description
Deals with a wide range of plants for temperate areas (and indoor aquaria) with quite a lot of information on cultivation techniques.
]. Excellent when roasted, the taste is somewhat like potatoes. The tubers are starchy with a distinct flavour[
116
Title
Oriental Herbs and Vegetables, Vol 39 No. 2.
Publication
 
Author
Brooklyn Botanic Garden
Publisher
Brooklyn Botanic Garden
Year
1986
ISBN
-
Description
A small booklet packed with information.
]. The tubers should not be eaten raw[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].The skin is rather bitter and is best removed after the tubers have been cooked[
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.
]. Tubers can also be dried and ground into a powder, this powder can be used as a gruel etc or be added to cereal flours and used in making bread[
55
Title
Eat the Weeds.
Publication
 
Author
Harris. B. C.
Publisher
Pivot Health
Year
1973
ISBN
-
Description
Interesting reading.
,
94
Title
Common Edible and Useful Plants of the West.
Publication
 
Author
Sweet. M.
Publisher
Naturegraph Co.
Year
1962
ISBN
0-911010-54-8
Description
Useful wild plants in Western N. America. A pocket guide.
].The roots (tubers really) are borne on the ends of slender roots, often 30cm deep in the soil and some distance from the parent plant. The tubers of cultivated forms are about 10cm in diameter and are best harvested in the late summer as the leaves die down. The dried root contains (per 100g) 364 calories, 17g protein, 1g fat, 76.2g carbohydrate, 3.1g fibre, 5.8g ash, 44mg calcium, 561mg phosphorus, 8.8mg iron, 2,480mg potassium, 0.54mg thiamine, 0.14mg riboflavin, 4.76mg niacin and 17mg ascorbic acid. They contain no carotene[
218
Title
Medicinal Plants of China
Publication
 
Author
Duke. J. A. and Ayensu. E. S.
Publisher
Reference Publications, Inc.
Year
1985
ISBN
0-917256-20-4
Description
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
].

Leaves and young stems - cooked as a vegetable and added to rice dishes[
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.
,
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
]. Somewhat acrid.

Medicinal

The plant is antiscorbutic, diuretic[
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.
].

The leaf is used to treat a variety of skin problems[
218
Title
Medicinal Plants of China
Publication
 
Author
Duke. J. A. and Ayensu. E. S.
Publisher
Reference Publications, Inc.
Year
1985
ISBN
0-917256-20-4
Description
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
].

The tuber is discutient, galactofuge and may induce premature birth[
218
Title
Medicinal Plants of China
Publication
 
Author
Duke. J. A. and Ayensu. E. S.
Publisher
Reference Publications, Inc.
Year
1985
ISBN
0-917256-20-4
Description
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
].

Other Uses

None known

Propagation

Seed - best sown as soon as it is ripe in a pot standing in about 5cm of water. Prick out the seedlings into individual pots when they are large enough to handle, and gradually increase the depth of water as the plants grow until it is about 5cm above the top of the pot. Plant out when large enough.
Division of the tubers in spring or autumn. Easy.
Runners potted up at any time in the growing season.

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