Nuphar polysepala
Engelm.
Nymphaeaceae
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: Spatterdock
General Information
Nuphar polysepala is a perennial plant that can grow up to 1.80 metres tall.
It is harvested from the wild for local use as a food and medicine
Known Hazards
None known
Botanical References
60- Title
- Vascular Plants of the Pacific Northwest.
- Publication
-
- Author
- Hitchcock. C. L.
- Publisher
- University of Washington Press
- Year
- 1955
- ISBN
- -
- Description
- A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.
,
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.
Range
Western N. America - Alaska to California.
Habitat
Ponds, shallow lakes and slow-flowing rivers[
60- Title
- Vascular Plants of the Pacific Northwest.
- Publication
-
- Author
- Hitchcock. C. L.
- Publisher
- University of Washington Press
- Year
- 1955
- ISBN
- -
- Description
- A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.
,
187- Title
- Perennials. Volumes 1 and 2.
- Publication
-
- Author
- Phillips. R. & Rix. M.
- Publisher
- Pan Books
- Year
- 1991
- ISBN
- 0-330-30936-9
- Description
- Photographs of over 3,000 species and cultivars of ornamental plants together with brief cultivation notes, details of habitat etc.
], from valleys to almost 3,000 metres in the mountains[
212- Title
- A Field Guide to Rocky Mountain Wildflowers
- Publication
-
- Author
- Craighead. J., Craighead. F. and Davis. R.
- Publisher
- The Riverside Press
- Year
- 1963
- ISBN
- 63-7093
- Description
- Excellent little pocket guide to the area, covering 590 species and often giving details of their uses.
].
Properties
| Edibility Rating |  |
| Medicinal Rating |  |
| Habit | Perennial |
| Height | 1.80 m |
| Pollinators | Flies, Beetles |
| Cultivation Status | Wild |
Cultivation Details
A water plant requiring a rich soil and 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]).
,
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.
]. It is best grown in still water up to 75cm deep but it also tolerates slow moving water[
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.
]. Succeeds in light shade[
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 are hardy to about -20°c[
187- Title
- Perennials. Volumes 1 and 2.
- Publication
-
- Author
- Phillips. R. & Rix. M.
- Publisher
- Pan Books
- Year
- 1991
- ISBN
- 0-330-30936-9
- Description
- Photographs of over 3,000 species and cultivars of ornamental plants together with brief cultivation notes, details of habitat etc.
].
Edible Uses
Root - raw or 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.
,
161- Title
- Food Plants of the N. American Indians. Publication no. 237.
- Publication
-
- Author
- Yanovsky. E.
- Publisher
- U.S. Depf of Agriculture.
- Year
-
- ISBN
- -
- Description
- A comprehensive but very terse guide. Not for the casual reader.
]. Boiled or baked[
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.
,
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
,
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 root can also be dried and ground into a flour[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
]. The rather strong taste can be removed by soaking the root in water prior to use[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
]. The N. American Indians used the roots in times of famine[
212- Title
- A Field Guide to Rocky Mountain Wildflowers
- Publication
-
- Author
- Craighead. J., Craighead. F. and Davis. R.
- Publisher
- The Riverside Press
- Year
- 1963
- ISBN
- 63-7093
- Description
- Excellent little pocket guide to the area, covering 590 species and often giving details of their uses.
].
Seed - raw or 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.
,
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.
,
101- Title
- Edible Wild Fruits and Nuts of Canada.
- Publication
-
- Author
- Turner. N. J. and Szczawinski. A.
- Publisher
- National Museum of Natural Sciences
- Year
- 1978
- ISBN
- -
- Description
- A very readable guide to some wild foods of Canada.
,
161- Title
- Food Plants of the N. American Indians. Publication no. 237.
- Publication
-
- Author
- Yanovsky. E.
- Publisher
- U.S. Depf of Agriculture.
- Year
-
- ISBN
- -
- Description
- A comprehensive but very terse guide. Not for the casual reader.
]. The fairly large seed can be dried and ground into a powder and then be used for making porridge or mixed with other flours for making bread[
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.
,
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.
]. When roasted it resembles popcorn in flavour[
212- Title
- A Field Guide to Rocky Mountain Wildflowers
- Publication
-
- Author
- Craighead. J., Craighead. F. and Davis. R.
- Publisher
- The Riverside Press
- Year
- 1963
- ISBN
- 63-7093
- Description
- Excellent little pocket guide to the area, covering 590 species and often giving details of their uses.
].
Medicinal
The root is analgesic and antihaemorrhagic[
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 decoction is taken in the treatment of pain in any part of the body, and for lung haemorrhages, TB etc[
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 poultice made from the root is used in the treatment of any pain, rheumatic joints, sores etc[
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.
].
Other Uses
None known
Propagation
Seed - sow as soon as it is ripe in a greenhouse in pots submerged under 25mm of water. Prick out into individual pots as soon as the first true leaf appears and grow them on in water in a greenhouse for at least two years before planting them out in late spring.
The seed is collected by wrapping the developing seed head in a muslin bag to avoid the seed being lost. Harvest it 10 days after it sinks below the soil surface or as soon as it reappears[
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.
].
Division in May. Each portion must have at least one eye. Submerge in pots in shallow water until established[
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.
].
If you have any useful information about this plant, please leave a comment. Comments have to be approved before they are shown here.
Useful Temperate Plants Database 2016 by
Ken Fern,
web interface by
Ajna Fern
with help from
Richard Morris.
