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Plant Dipteryx odorata

Spice:

Tonka bean

Botanical Name:

Dipteryx odorata

Botany:

The tree grows up to 25–30 m (82–98 ft), with a trunk of up to 1 m (3 ft 3 in) in diameter. The tree bark is smooth and gray, whereas the wood is red. The tree has alternate pinnate leaves with three to six leaflets, leathery, glossy and dark green, and pink flowers. Each developed fruit contains one seed. D. odorata is pollinated by insects. The worst pests are bats because they eat the pulpy flesh of the fruit. A few known fungi may cause problems: Anthostomella abdita, Diatrype ruficarnis, Macrophoma calvuligera and Myiocopron cubense. Radio-carbon dating of D. odorata stumps left by a large logging operation near Manaus by Niro Higuchi, Jeffrey Chambers, and Joshua Schimel, showed that it was one of around 100 species which definitely live to over 1,000 years (specifically an age of 1400 years being claimed for this and the unrelated Cariniana macrantha). Until their research, it had been assumed unlikely that any Amazonian tree could live to old age due to the conditions of the rain forest.

Cultivation:

Today, the main producers of tonka beans are Venezuela and Nigeria. The cumaru tree is a light-demanding calcifuge tree which grows on poor, well-drained soils. The best growth is reached on fertile soils rich in humus. In the native region there is a mean annual temperature of 25 °C and about 2,000 mm (80 in) rainfall per year, with a dry season from June to November. In general, it has a very low plant density, but depending on the agricultural use, the density and the age of the trees diversify. In seed production systems, the plant density is higher and the trees are older than in timber production systems. The tree flowers from March to May, and the fruits ripen from June to July. So, the fresh fruits are picked up in June and July, and fallen pods are harvested from January to March[6] or sometimes earlier. The hard outer shell is removed and the beans are spread out for 2–3 days to dry, after which they can be sold. The major producer is Venezuela, followed by Brazil and Colombia. The most important importing country is the US, where it is used especially in the tobacco industry.