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Useful Tropical Plants

Erythrina subumbrans

(Hassk.) Merr.

Fabaceae

+ Synonyms

Corallodendron lithospermum (Blume ex Miq.) Kuntze

Erythrina holoserica Kurz

Erythrina lithosperma Miq.

Erythrina secundiflora Hassk.

Erythrina sumatrana Miq.

Hypaphorus subumbrans Hassk.

Common Name: Dadap

Erythrina subumbrans

General Information

Dadap is a deciduous tree with a spreading crown and branches armed with stout prickles; it can grow 5 - 35 metres tall. The straight bole can reach 60cm in diameter[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
,
443
Title
Biotik, Laos
Publication
 
Author
 
Website
http://biotik.org/species_list_laos.html
Publisher
 
Year
0
ISBN
 
Description
Information on more than 100 species of Laotian trees.
].
At one time this species was one of the most widely planted shade trees for coffee and other crops in Indonesia, until large numbers of trees were destroyed by a root disease in the late 19th Century[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
,
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
]. It is still planted on a smaller scale in Indonesia for shade in cocoa, coffee and tea plantations, and on a larger scale in other tropical countries[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
,
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
]. The tree is also grown as an ornamental, valued especially for its floral display[
443
Title
Biotik, Laos
Publication
 
Author
 
Website
http://biotik.org/species_list_laos.html
Publisher
 
Year
0
ISBN
 
Description
Information on more than 100 species of Laotian trees.
], and as a pioneer species in reforestation projects in Thailand.

Known Hazards

Although no specific mention has been seen for this species, the seed, bark and stems of plants in this genus usually contain alkaloids that are toxic in all but small amounts[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

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

E. Asia - China, India, Sri Lanka, Myanmar, Thailand, Laos, Vietnam, Malaysia, Indonesia, Philippines.

Habitat

Moist valleys, near streams, in open locations and secondary forest at low and medium elevations[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Properties

Weed PotentialYes
Edibility Rating *  *
Medicinal Rating *  *
Other Uses Rating *  *  *
HabitDeciduous Tree
Height20.00 m
Growth RateFast
PollinatorsBirds
Cultivation StatusCultivated, Ornamental, Wild

Cultivation Details

A plant of low to medium elevations in the tropics, where it is usually found at elevations below 1,500 metres[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It is found in areas where the mean annual rainfall is in the range 500 - 2,000mm and there is a maximum of 4 months with less than 100mm rainfall[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The mean annual temperature is above 22°c[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The trees are fairly tolerant of wind, unless branches have been damaged by borers[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Often grown as an ornamental or to provide shade in plantations, the tree has occasionally escaped from cultivation and become naturalized. It is classified as invasive in some Pacific islands[
305
Title
Pacific Island Ecosystems at Risk
Publication
 
Author
 
Website
http://www.hear.org/pier/scientificnames/index.html
Publisher
 
Year
0
ISBN
 
Description
A very good website detailing weed species that have been introduced into the Pacific Islands.
].
Thornless forms generally produce fewer flowers and fruit than wild forms which have spines[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
]. The cultivated thornless forms may reach an age of 40 - 50 years, but often die earlier because of diseases and pests[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Pruning and pollarding are very well tolerated[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Where the tree is pruned, it is sometimes used as a medium level shade tree, interplanted with taller shade trees like Paraserianthes falcataria or Grevillea robusta[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. Elsewhere, it is not pruned and is used for high shade, interplanted with Leucaena leucocephala to provide the low shade[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
In Western Samoa, yam vines planted in a circle around a tree are allowed to cover the canopy and suppress its growth[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The flowers contain large quantities of nectar and are a major source of food for birds during the dry season[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
].
The various species of Erythrina can all, as far as is known, be intercrossed to produce fertile hybrids[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
].
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
755
Title
Nodulation Plants in GRIN Taxonomy
Publication
 
Author
 
Website
http://www.ars-grin.gov/~sbmljw/cgi-bin/taxnodul.pl?language=en
Publisher
United States Department of Agriculture
Year
0
ISBN
 
Description
An online database listing plants that have either positive or negative reports on root and stem nodulation with nitrogen-fixing bacteria.
].

Edible Uses

Very young leaves are steamed and eaten in salads[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
,
701
Title
Asean Tropical Plant Database
Publication
 
Author
 
Website
http://211.114.21.20/tropicalplant/index.jsp
Publisher
 
Year
 
ISBN
 
Description
Terse details, with photos, of many of the plants growing in the tropical forests of southeast Asia. Gives some details of plant uses along with a description of the plant and its range.
].

Medicinal

A decoction of the bark is taken to the treat spleen afflictions[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

A decoction of the leaves is used as a treatment for coughs[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The pounded young leaves are used as a poultice for women soon after giving birth and as a treatment for headache[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The juice of the leaves is used as an eye-wash[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Seeds contain the curare-like alkaloids erysoline, erysopine and erythratine[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Agroforestry Uses:

Grown as a shade tree in cocoa, coffee and tea plantations. It is also used as a shelter crop for taro (Colocasia esculenta) and as live support for yams (Dioscorea spp.), betel nut (Piper betle), pepper (Piper nigrum) and vanilla (Vanilla planivolia) vines[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Loppings of the plant provide a quickly decomposing green manure, containing per 100 g dry matter: N 1.5-3 g, P 0.2-0.35 g, K 1-2 g[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
].
The tree is planted as a pioneer species in northern Thailand in reforestation projects to restore native woodland - it is planted in degraded woodland and open areas in a mix with various other species that all have the ability to grow fast; produce dense, weed-suppressing crowns; and attract seed-dispersing wildlife, particularly birds and bats[
998
Title
Forest Restoration Planting in Northern Thailand
Publication
Proceedings of the Southeast Asian Moving Workshop on Conservation, Management and Utilization of Forest Genetic Resources No. 31/2002
Author
Pakkad G.; Elliott S.; Anusarnsunthorn V. Et al
Website
http://www.fao.org/
Publisher
Food and Agriculture Organization of the United Nations; Bangkok
Year
2002
ISBN
 
Description
A report on reforestation in northern Thailand by using specific pioneer species. It can be downloaded from the Internet.
].

Other Uses

The wood is soft, light and coarse-grained, the texture coarse and uneven[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
]. The sapwood is not differentiated from the heartwood, which is light straw-coloured[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
]. It is utilized in canoe and raft building[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
,
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
].

Propagation

Fresh seeds, and those harvested within 3 - 6 months of maturity, can be sown without any special treatment. Germination rates are generally high and are often 100%. Seeds over 6 months old may take between 12 - 18 months to germinate due to their hard seed coat which becomes tougher with age. Soaking them in hot water, or abrading their seedcoat, can reduce this time considerably. They may be added to water which has just fallen below boiling point and left in the water as it cools for a minimum of one hour, but up to 12 hours for seed 3 years or more old, and then sown in the usual way. Alternatively, file the seeds with a slender triangular file. A groove can be made through the sides of the seed coat with care so as to avoid damaging the cotyledons or embryo, which usually results in the death of the seeds from fungal attack or in malformed and weakened seedlings[
564
Title
Annals of the Missouri Botanical Garden. Vol. 66
Publication
 
Author
 
Website
http://www.biodiversitylibrary.org
Publisher
Missouri Botanical Garden Press; Missouri.
Year
1979
ISBN
 
Description
Contains an article on propagating Erythrina spp. It can be downloaded from the Internet.
].
Seeds of most species produce strong seedlings from healthy seeds in almost any well-drained soil, with a minimum of trouble from damping-off disease[
564
Title
Annals of the Missouri Botanical Garden. Vol. 66
Publication
 
Author
 
Website
http://www.biodiversitylibrary.org
Publisher
Missouri Botanical Garden Press; Missouri.
Year
1979
ISBN
 
Description
Contains an article on propagating Erythrina spp. It can be downloaded from the Internet.
].
The plant can be propagated by seed, but seeds from thornless trees generally produce trees with thorns[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Large cuttings, even if they are 25 cm in diameter, usually root easily[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

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