Siphonia rigidifolia Spruce ex Benth.
Hevea rigidifolia is an evergreen tree with a sparse crown; it can grow up to 18 metres tall[
The seeds are an important food source for native people in some parts of the Amazon, though in other areas they are used as a food in times of famine only. The tree yields a latex that is high in resin and poor in rubber[
The seeds contain cyanic compounds are poisonous to humans unless treated[
]. See notes on edible uses below[
Northern S. America - northern Brazil, Colombia.
Prefers a high, well-drained, sandy or friable soil supporting a light, sparse, caatinga forest[
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A plant of the 'Caatinga' dry forest region of northeast Brazil. The climate is hot and dry, there are usually 6 to 11 months without rain each year. The mean annual rainfall varies from 250 - 1,000mm, and the mean annual temperature is from 24 - 26°c.
Seed - cooked[
]. Poisonous raw, the seeds are boiled for 24 hours, then the liquid is strained off[
]. The mass that remains has somewhat the colour and consistency of rice that has been boiled a long time[
]. The seeds are commonly used by some native people, though other tribes view them only as famine foods when better foods are not available[
A latex is obtained from the tree[
]. The latex, which usually has a slightly cream-yellow hue, is poor in rubber and high in resin[
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