Caesalpinia oleosperma Roxb.
Caesalpinia digyna is a very prickly plant that is variable in shape and can be a climbing or scandent shrub, or a small tree[
, 310. It can grow up to 10 metres tall[
Due to its very prickly nature, the plant is rarely cultivated, though it is often gathered from the wild and used locally for dyes, tannin and medicine[
E. Asia - China, Indian subcontinent, Malaysia to Indonesia.
Rather dry open habitats up to 250 metres in Indonesia[
]. Thickets, light forests and forest borders, in Indo-China up to 1,200 metres[
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Succeeds in warm temperate to tropical climates[
Succeeds in any moderately fertile, well-drained soil[
]. Requires a position in full sun[
Plants in this genus are notably resistant to honey fungus[
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 root is astringent[
]. It is given internally in the treatment of phthisis, scrofula and diabetes[
The roots and the seedpods are a source of tannins[
]. Very rich in tannin, they are used in local tanning industries[
The pods can also serve to prepare a blackish or bluish dye and a black ink, and are sometimes employed as a mordanting agent[
The wood is reported to contain a red dye[
The pods contain an oil which can be used in lamps[
Seed - pre-soak for 12 - 24 hours in warm water prior to sowing. When large enough to handle, prick the seedlings out into individual pots and grow them on until large enough to plant out.
Softwood cuttings in sand in a frame[
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