Trapa japonica
Fleron.
Lythraceae
The Temperate Database is in the process of being updated, with new records being added and old ones being checked and brought up to date where necessary. This record has not yet been checked and updated.
Common Name:
General Information
Trapa japonica is a Annual
It is harvested from the wild for local use as a food.
Known Hazards
We have no specific information for this species, but the raw seed of several members of this genus contains toxins. However, these are destroyed in the cooking process[
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.
,
206- Title
- Oriental Vegetables
- Publication
-
- Author
- Larkcom J.
- Publisher
- John Murray
- Year
- 1991
- ISBN
- 0-7195-4781-4
- Description
- Well written and very informative.
].
Botanical References
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.
,
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
Europe to E. Asia.
Habitat
Lakes and ponds 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.
]. Swamps, ponds and rivers in 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.
].
Properties
| Edibility Rating |  |
| Habit | Annual |
| Height | 0.00 m |
| Cultivation Status | Wild |
Cultivation Details
We have very little information on this species and do not know if it will be hardy outdoors in Britain. However, judging by the plants native range, it is likely to succeed outdoors at least in the warmer areas of the country. The following notes are based on the general needs of the genus.
An aquatic plant, floating by means of inflated petioles, it succeeds in still or slowly-flowing water requiring a position in full sun and a slightly acidic water with a rich planting medium[
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.
].
Plants require a high summer temperature in order to perform well, they are not frost hardy[
206- Title
- Oriental Vegetables
- Publication
-
- Author
- Larkcom J.
- Publisher
- John Murray
- Year
- 1991
- ISBN
- 0-7195-4781-4
- Description
- Well written and very informative.
].
Edible Uses
Seed - raw or cooked[
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.
]. Some caution is advised, see the notes above on toxicity.
Medicinal
None known
Other Uses
None known
Propagation
Seed - harvest in late summer and store overwinter in a jar of water in a cold but frost-free place. The seed quickly loses its vitality if it is allowed to become dry. Sow in spring, placing one seed in each pot and submerging them under a few centimetres of water.
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Useful Temperate Plants Database 2016 by
Ken Fern,
web interface by
Ajna Fern
with help from
Richard Morris.
