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Useful Tropical Plants

Juglans neotropica

Diels

Juglandaceae

+ Synonyms

Jugans andina Triana & Cortés

Juglans columbiensis Dode

Juglans equatoriensis Linden

Juglans granatensis Linden

Juglans honorei Dode

Common Name: Andean Walnut

Juglans neotropica
Samples of the wood
Photograph by: mauroguanandi
Creative Commons License

General Information

Andean walnut is a slow-growing, deciduous tree with a spreading or irregularly round crown, that can eventualy reach a height of 30 metres[
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
,
434
Title
Flora of Peru
Publication
 
Author
Macbride. J.F.
Publisher
Field Museum of Natural History
Year
1936
ISBN
 
Description
An excellent attempt at a Flora of Peru, though it is clear that many of the plants were imperfectly known at that time and so information on them was sketchy. Available for download from the Internet.
,
453
Title
Woods of Northeastern Peru
Publication
 
Author
Williams L.
Website
http://www.biodiversitylibrary.org/
Publisher
Field Museum Press; Chicago.
Year
1936
ISBN
 
Description
Gives information on the properties of the wood of well over 1,000 species of woody plants from northeastern Peru. Can be downloaded from the Internet.
]. The bole is straight and conical, about 60cm in diameter and often dividing 3 - 4,5 metres above the ground[
453
Title
Woods of Northeastern Peru
Publication
 
Author
Williams L.
Website
http://www.biodiversitylibrary.org/
Publisher
Field Museum Press; Chicago.
Year
1936
ISBN
 
Description
Gives information on the properties of the wood of well over 1,000 species of woody plants from northeastern Peru. Can be downloaded from the Internet.
].
The edible seeds are gathered from the wild and the tree is also cultivated in parts of the Andes[
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.
]. A locally important food, the seeds are often sold in markets in S. America[
301
Title
Cornucopia II
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications, California.
Year
1998
ISBN
0-9628087-2-5
Description
The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.
,
402
Title
Contribution to an evaluation of tree species using the new CITES Listing Criteria
Publication
 
Author
 
Website
http://sea.unep-wcmc.org/species/tree_study/
Publisher
UNEP-WCMC; Cambridge.
Year
1999
ISBN
 
Description
A document produced by UNEP World Conservation Monitoring Centre in 1999. It contains fact sheets on more than 200 tree species from around the globe.
]. The leaves are also sold, for use as a dye[
508
Title
The Ethnobotany of Chinchero.
Publication
Fieldiana Botany New Series No. 24
Author
Franquemont C. Et al
Website
http://www.biodiversitylibrary.org
Publisher
Field Museum of Natural History.
Year
1990
ISBN
0015-0746
Description
Brief details on the local uses of plants for an Andean community in southern Peru. It can be downloaded from the Internet.
].
Declines in habitat have been considerable and the species continues to be exploited for its timber, which is often used for decorative purposes[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
]. Its presence in the international timber trade is thought to be increasing, leading to the plant being listed as 'Endangered' in the IUCN Red List of Threatened Species(2009)[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].

Known Hazards

None known

Botanical References

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.
,
434
Title
Flora of Peru
Publication
 
Author
Macbride. J.F.
Publisher
Field Museum of Natural History
Year
1936
ISBN
 
Description
An excellent attempt at a Flora of Peru, though it is clear that many of the plants were imperfectly known at that time and so information on them was sketchy. Available for download from the Internet.

Range

Northern and western S. America - Venezuela, Ecuador, Colombia, Peru.

Habitat

Found in drier to very wet forests at elevations of 1,600 - 3,000 metres[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
]. Trees are often found along stream banks and field boundaries, where they regenerate freely[
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
].

Properties

Conservation StatusEndangered
Edibility Rating *  *  *
Medicinal Rating *  *
Other Uses Rating *  *  *  *
HabitDeciduous Tree
Height25.00 m
Growth RateSlow
Self-fertileYes
Cultivation StatusCultivated, Wild

Cultivation Details

A plant of higher elevations of the tropics, growing at elevations of 1,600 - 3,000 metres[
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
,
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
]. Grows in areas of low to medium rainfall with an annual precipitation of 1,000 to 3,000 mm that is distributed throughout the year[
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
,
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
]. Prefers an average temperature that ranges between 14 - 22°c[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].
Requires a deep well-drained loam and a sunny position sheltered from strong winds[
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]).
,
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
]. Prefers a slightly alkaline soil[
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 soils of loose texture, muddy, loose-sandy (loose soils), with a neutral to slightly acid pH[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
]. It does not tolerate low pH or calcareous soils and needs deep and fertile soils[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
]. It has low growth in poor, shallow, and flooded soils[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].
Seed nuts collected from Ecuador have been planted in New Zealand and have shown very rapid growth, reaching up to 1.5 metres growth per year during the first few years[
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
]. After 10 years, the trees were more than 10 metres high and bearing their third annual crop of nuts[
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
].
No cross-pollination is required for nut production and hybridization appears to be possible[
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
].
Plants are very susceptible to fire damage[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].
Trees have a dense canopy which tends to reduce plant growth below them.
We have no specific information for this species, but the roots of several members of this genus produce substances that are toxic to many plant species, especially apples (Malus species), members of the Ericaceae, Potentilla spp and the white pines (certain Pinus spp.)[
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 leaves of many species also secrete substances that have an inhibitory affect on plants growing underneath them. All in all this is not a very good companion plant[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Edible Uses

Seed - raw or cooked. Eaten fresh, or used in various preparations[
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
]. The seed is larger than the common walnut (Juglans regia) and has a rich and pleasant flavour, though it is contained in a very thick, bony shell[
301
Title
Cornucopia II
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications, California.
Year
1998
ISBN
0-9628087-2-5
Description
The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.
,
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
,
402
Title
Contribution to an evaluation of tree species using the new CITES Listing Criteria
Publication
 
Author
 
Website
http://sea.unep-wcmc.org/species/tree_study/
Publisher
UNEP-WCMC; Cambridge.
Year
1999
ISBN
 
Description
A document produced by UNEP World Conservation Monitoring Centre in 1999. It contains fact sheets on more than 200 tree species from around the globe.
]. The seed is rich in oil[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].

Medicinal

The boiled leaves are used as a tonic[
504
Title
Contributions from the United States National Herbarium Vol. 24
Publication
 
Author
 
Website
http://www.biodiversitylibrary.org
Publisher
Smithsonian Institute; Washington.
Year
1931
ISBN
 
Description
A treatment of the edible fruits of Ecuador is jut one of the articles in this publication. It can be downloaded from the internet.
].

Other Uses

The bark is a good source of tannins[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].

Used locally as a rootstock for J. regia[
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.
].

A yellow dye is obtained from the unripened fruits[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].
A very fine black dye is obtained from the ripe fruits[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
].
Dyes are obtained from the bark and leaves[
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
]. A brown is obtained from the leaves[
508
Title
The Ethnobotany of Chinchero.
Publication
Fieldiana Botany New Series No. 24
Author
Franquemont C. Et al
Website
http://www.biodiversitylibrary.org
Publisher
Field Museum of Natural History.
Year
1990
ISBN
0015-0746
Description
Brief details on the local uses of plants for an Andean community in southern Peru. It can be downloaded from the Internet.
].

The heartwood is dark, purplish-brown, well demarcated from the light brown sapwood[
453
Title
Woods of Northeastern Peru
Publication
 
Author
Williams L.
Website
http://www.biodiversitylibrary.org/
Publisher
Field Museum Press; Chicago.
Year
1936
ISBN
 
Description
Gives information on the properties of the wood of well over 1,000 species of woody plants from northeastern Peru. Can be downloaded from the Internet.
]. The wood is rather heavy, firm, durable, compact and strong[
453
Title
Woods of Northeastern Peru
Publication
 
Author
Williams L.
Website
http://www.biodiversitylibrary.org/
Publisher
Field Museum Press; Chicago.
Year
1936
ISBN
 
Description
Gives information on the properties of the wood of well over 1,000 species of woody plants from northeastern Peru. Can be downloaded from the Internet.
]. Straight or roey-grained; medium or coarse-textured; it is easy to work; takes a smooth and fairly lustrous finish and holds its place well[
453
Title
Woods of Northeastern Peru
Publication
 
Author
Williams L.
Website
http://www.biodiversitylibrary.org/
Publisher
Field Museum Press; Chicago.
Year
1936
ISBN
 
Description
Gives information on the properties of the wood of well over 1,000 species of woody plants from northeastern Peru. Can be downloaded from the Internet.
]. A beautiful wood, it is used in decorative veneer, fine cabinetmaking, interior carpentry, turned utensils, guitars and decoration. It is also used in packing boxes and construction and for tri-plex[
337
Title
Tropical Tree Seed Manual
Publication
 
Author
Vosso. J. Editor.
Website
http://www.rngr.net/Publications/ttsm
Publisher
USDA Forest Service.
Year
2002
ISBN
 
Description
An extremely good guide, it can also be downloaded in its entirety from the address shown above.
,
504
Title
Contributions from the United States National Herbarium Vol. 24
Publication
 
Author
 
Website
http://www.biodiversitylibrary.org
Publisher
Smithsonian Institute; Washington.
Year
1931
ISBN
 
Description
A treatment of the edible fruits of Ecuador is jut one of the articles in this publication. It can be downloaded from the internet.
].
The wood makes a good fuel and is used to make charcoal[
349
Title
Global Tree Campaign - 40 Species in Trade
Publication
 
Author
 
Website
http://www.unep-wcmc.org/trees/trade/40_species_in_trade.htm
Publisher
 
Year
0
ISBN
 
Description
Information on the habitats, uses and some cultivation notes for 40 species of timber trees.
,
402
Title
Contribution to an evaluation of tree species using the new CITES Listing Criteria
Publication
 
Author
 
Website
http://sea.unep-wcmc.org/species/tree_study/
Publisher
UNEP-WCMC; Cambridge.
Year
1999
ISBN
 
Description
A document produced by UNEP World Conservation Monitoring Centre in 1999. It contains fact sheets on more than 200 tree species from around the globe.
].

Propagation

The seed is best sown as soon as it is ripe in individual deep pots in a cold frame[
80
Title
Hardy Woody Plants from Seed.
Publication
 
Author
McMillan-Browse. P.
Publisher
Grower Books
Year
1985
ISBN
0-901361-21-6
Description
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
]. You need to protect it from mice, birds, squirrels etc. The seed usually germinates in late winter or the spring. Plant out the seedlings into their permanent positions in early summer and give some protection from the cold for their first winter or two.
The seed can also be stored in cool moist conditions (such s the salad compartment of a fridge) over the winter and sown in early spring but it may then require a period of cold stratification before it will germinate[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
,
80
Title
Hardy Woody Plants from Seed.
Publication
 
Author
McMillan-Browse. P.
Publisher
Grower Books
Year
1985
ISBN
0-901361-21-6
Description
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
,
113
Title
The Reference Manual of Woody Plant Propagation.
Publication
 
Author
Dirr. M. A. and Heuser. M. W.
Publisher
Athens Ga. Varsity Press
Year
1987
ISBN
0942375009
Description
A very detailed book on propagating trees. Not for the casual reader.
]. Germination rates are usually less than 50%[
227
Title
Trees of North Texas
Publication
 
Author
Vines. R.A.
Publisher
University of Texas Press.
Year
1982
ISBN
0292780206
Description
A readable guide to the area, it contains descriptions of the plants and their habitats with quite a bit of information on plant uses.
].

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