Common Name:

General Information

Dalbergia humbertii is a deciduous tree growing up to 20 metres tall[].
The tree is selectively felled in the wild for its valuable timber.
Dalbergia humbertii is restricted to the dry deciduous forests of Madascar, a habitat type that has been severely destroyed by human activity. It has been estimated that the western dry forest has been reduced by approximately 40% since the 1970's and that since human settlement of this region, an estimated 97% of the island’s dry deciduous western forests have been destroyed. With an expanding rural population and increasing degradation of existing arable lands, the pressure on the remaining forest is extremely high. Selective logging and the removal of large trees pose additional threats of forest habitat degradation.The plant is classified as 'Vulnerable' in the IUCN Red List of Threatened Species(2018)[].

Known Hazards

None known

Botanical References

Range

Africa - northern and western Madagascar.

Habitat

Deciduous, seasonally dry forest and woodland, along stream margins, favouring limestone soils; at elevations up to 500 metres[].

Properties

Conservation Status	Vulnerable
Other Uses Rating
Habit	Deciduous Tree
Height	17.00 m
Pollinators	Insects
Cultivation Status	Wild

Cultivation Details

Established plants are drought tolerant. 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[].

Edible Uses

None known

Medicinal

None known

Other Uses

The wood is of good quality[]. A form of rosewood[].

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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