Bark
Bark greyish brown, rough and fissured. Exudes sticky, caustic resin (cashew balm) when injured.
Syn. Acajuba occidentalis
Bark greyish brown, rough and fissured. Exudes sticky, caustic resin (cashew balm) when injured.
Simple, alternate, obovate to elliptic. Thick, leathery, smooth margins; prominent midrib. Young leaves reddish.
Small, fragrant, greenish-yellow to pinkish.
The true fruit is the kidney-shaped cashew nut (hard shell with caustic oil). The swollen peduncle becomes the cashew apple, yellow or red, juicy and edible.
Cashew nut shell liquid (CNSL) contains heat-resistant compounds used in industrial products such as automotive brake linings, clutch pads, protective varnishes and specialised high-temperature materials.
Trinidad to S. Tropical America, Asia, Cameroon, Caroline Is.