We have followed the treatment in the Flora of China[
], which treats this as a distinct species. However, some botanists see it as a var of Dalbergia lanceolaria, as Dalbergia lanceolaria L. f. subsp. lanceolaria var. assamica (Benth.) Thoth.[GRIN]
Amerimnon assamicum (Benth.) Kuntze
Dalbergia balansae Prain
Dalbergia lanceolaria assamica (Benth.) Thoth.
Dalbergia szemaoensis Prain
Dalbergia assamica is a tree with a spreading crown; it can grow 7 - 10 metres tall.
The tree is cultivated as a shade tree for tea plantations and is also used in shelterbelts[
E. Asia - China, India, Bhutan, Bangladesh.
Mixed forests, open forests, among bushes, mountain slopes, riversides, wastelands beside villages; at elevations from 300 - 1,700 metres[
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We have no specific information on this species, but members of this genus generally prefer a fertile, loam soil and a position in full sun[
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[
The tree is grown to provide shade for tea plantations in Assam, though used less frequently for this purpose than it used to be[
It has been recommended as a mid-storey tree for shelter-belts[
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[
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