Juglans olanchana
Standl. & L.O.Williams
Juglandaceae
Juglans guatemalensis W.E.Manning
Common Name:
Two year old cultivated trees
Photograph by: treesftf
Creative Commons Attribution 2.0
General Information
Juglans olanchana is a large, deciduous tree that can reach a height of 55 metres[
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
]. The bole can be up to 2 metres in diameter[
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
].
The tree is harvested from the wild for its edible seeds, valuable timber and tannins. It is also sometimes cultivated in Central America for its seeds[
].
The tree is classified as 'Endangered' in the IUCN Red List of Threatened Species(1998)[
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
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
,
595- Title
- Journal of the Arnold Arboretum. Vol. 38
- Publication
-
- Author
- Various
- Website
- http://www.biodiversitylibrary.org
- Publisher
- Harvard University.
- Year
- 1957
- ISBN
-
- Description
- Amongst other things, it contains an article on the Juglans of central America. It can be downloaded from the Internet.
Range
Central America - Costa Rica to Mexico.
Habitat
Mountain sides, river bottoms, along water courses, cafetales, at elevations from 500 - 1,500 metres in Guatemala[
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
].
Properties
| Conservation Status | Endangered |
| Edibility Rating |  |
| Other Uses Rating |  |
| Habit | Deciduous Tree |
| Height | 45.00 m |
| Cultivation Status | Cultivated, Wild |
Cultivation Details
A tree mainly found at medium elevations in the tropics, most commonly between 400 - 1,600 metres, though there is one report of a specimen collected near sea level in Nicaragua. It grows in areas of good rainfall.
Edible Uses
Seed - raw or cooked[
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
]. The shells are 34 - 45mm in diameter and 32 - 42mm long[
595- Title
- Journal of the Arnold Arboretum. Vol. 38
- Publication
-
- Author
- Various
- Website
- http://www.biodiversitylibrary.org
- Publisher
- Harvard University.
- Year
- 1957
- ISBN
-
- Description
- Amongst other things, it contains an article on the Juglans of central America. It can be downloaded from the Internet.
].
Medicinal
None known
Other Uses
The husk of the fruit is used as a source of tannins[
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
].
The wood is used for making fancy furniture[
331- Title
- Flora of Guatemala
- Publication
-
- Author
- Standley P.C. & J. A. Steyermark
- Website
- http://www.archive.org/
- Publisher
-
- Year
- 1946 - 1976
- ISBN
-
- Description
- A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
].
We do not have any more information for this species, but the general description for the wood of the tropical members of this genus is as follows:-
The heartwood is chocolate-brown and generally darker than the North American black walnut (Juglans nigra), sometimes with a purplish cast; it is sharply demarcated from the whitish sapwood. The texture is rather coarse; the grain is straight to irregular; luster is high; odour and taste are mild but distinctive. The wood dries very slowly, wet zones persist, and severe honeycombing and collapse may occur in stock thicker than 10cm x 10cm. The wood works well, cutting cleanly with hand and machine tools and taking an excellent finish. It also peels and slices readily but the veneers are also reported to dry slowly. It is used for decorative veneers, furniture, cabinet work, interior finish, and other applications similar to the North American black walnut[
316- Title
- Tropical Timbers of the World. Ag. Handbook No. 607.
- Publication
-
- Author
- Chudnoff. Martin.
- Publisher
- USDA Forest Service. Wisconsin.
- Year
- 1984
- ISBN
-
- Description
- Terse details on the properties of the wood of almost 400 species of trees from the Tropics.
].
Propagation
Seed -
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Useful Tropical Plants Database 2014 by
Ken Fern,
web interface by
Ajna Fern
with help from
Richard Morris.
