Common Name: Akar Laka

General Information

Dalbergia parviflora is a thorny, climbing shrub producing stems up to 30 metres long[].
The older stems are harvested from the wild for use as joss sticks[]. The wood is sold in local markets[].
Dalbergia parviflora has an extensive range, and is believed to have a large population. The plant is classified as 'Least Concern' in the IUCN Red List of Threatened Species(2013)[].

Known Hazards

None known

Botanical References

Range

E. Asia - Myanmar, Thailand, Malaysia, Indonesia, Philippines.

Habitat

Secondary forest on river banks, along the seashore, in fresh-water and brackish swamp forest and in Dipterocarp forest, mostly on fertile alluvial soils up to elevations of 150 metres[, ].

Properties

Conservation Status	Least Concern
Medicinal Rating
Other Uses Rating
Habit	Climber
Height	25.00 m
Cultivation Status	Wild

Cultivation Details

Dalbergia parviflora is a plant of lowland tropical areas.
Species in this genus are mainly found in the wild growing in sany soils and on limestone escarpments[]. In cultivation they are likely to do well in a fertile, loam soil and a position in full sun[].
It is doubtful whether this species is the true or the only source of 'kayu laka'; its natural scarcity is difficult to reconcile with the large amounts of incense used[]. It is recommended to clarify all the sources of 'kayu laka' and to investigate the prospects of cultivating it to prevent the species being eradicated from the wild[].
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[].

Edible Uses

None known

Medicinal

A red, sticky oil which is applied to ulcerated wounds can be distilled from the wood, and a decoction of the wood in water is used as a tonic[]. The grated wood is rubbed on the skin to invigorate the body[].

Other Uses

The pulverized heartwood is used as a component of incense or joss sticks, especially in China, India and Malaysia[]. It has no odour until burnt, when it produces a pleasant aroma[]. Only small amounts are used for joss sticks, because its strong odour easily dominates other components[].
Only the oldest parts of mature stems are collected from the wild; the sapwood is removed, the heartwood is cut into billets which are traded[]. The main components of the heartwood essential oil are nerolidol, farnesol, furfurol, arylbenzofurans and neoflavonoids[].

Propagation

Like many species within the family Fabaceae, once they have been dried for storage the seeds of this species may benefit from scarification before sowing in order to speed up germination. This can usually be done by pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water. By this time they should have imbibed moisture and swollen - if they have not, then carefully make a nick in the seedcoat (being careful not to damage the embryo) and soak for a further 12 hours before sowing[].
Softwood cuttings of many species, especially if taken from younger plants, will root in a well-drained, sandy medium in a closed case with bottom heat[].

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