Aporosa banahaensis (Elmer.) Merr.
Aporosa fruticosa (Blume) Müll.Arg.
Aporosa similis Merr.
Leiocarpus fruticosa Blume
Aporosa frutescens is a small, conical, dioecious tree or shrub that can grow up to 25 metres tall , though it is usually much smaller[
The plant provides a mordant which is widely used in the Batik industry in Indonesia.
Southeast Asia - Myanmar, Malaysia, Thailand to Indonesia and the Philippines.
Rain forest at elevations up to 1,700 metres[
]. It often grows in more open places in the forest and on wet ground, and is locally common[
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A tree of the tropical rainforests, where it grows naturally at elevations up to 1,700 metres[
Found in the wild on granitic or yellow-red loamy sand, red clay, blackish stony or a silty clay brown laterite[
]. It succeeds in dry and swampy conditions, and is often found growing in shade[
A dioecious species, both male and female forms need to be grown if fruit and seed are required.
The bark, called 'sasah' is used in the batik industry as a mordant, for fixing the red dye of Morinda citrifolia[
]. Sometimes the leaves were used for that purpose[
The bark is probably rich in aluminium, which explains its action as a mordant. No chemical analysis of this plant is available, but accumulation of aluminium is reported as common in the genus[
]. The crushed leaves smell of alum, and the yellowish colour of dried leaves also indicates a high content of aluminium[
The bark is also occasionally used to prepare a black dye[
The wood is hard, yellow-brown, and radially striate[
]. It is considered second-class, but is sometimes used for building houses and making tools[
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