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Hymenaea courbaril

Hymenaea courbaril is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hymenaea courbaril rather than just read about it. In short: Hymenaea courbaril, the courbaril or West Indian locust, is a hardwood tree common in the Caribbean and Central and South America. As lumber it is frequently used to make furniture, flooring, and decoration.

Hymenaea courbaril — main illustration
Hymenaea courbaril — illustration

Key takeaways

  • Hymenaea courbaril belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hymenaea courbaril to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hymenaea courbaril from memory before moving on to harder problems.

Reference excerpt

Hymenaea courbaril, the courbaril or West Indian locust, is a hardwood tree common in the Caribbean and Central and South America. As lumber it is frequently used to make furniture, flooring, and decoration. Its hard fruit pods have an edible dry pulp surrounding the seeds. Its sap, called animé, is used for incense, perfume, and varnish.

Names Hymenaea courbaril is commonly known as the "jatobá", "courbaril", "West Indian locust", "Brazilian copal", and "amami-gum". When used as flooring the tree is commonly referred to as "Brazilian cherry" or "South American cherry" because of the reddish color of the wood it yields—its wood is in fact much redder than that of the cherry tree. However, it is not a member of Prunus but instead a legume of the family Fabaceae. In the regions to which the tree is indigenous it is known as "stinking toe", "old man's toe", and "stinktoe" due to the strong cheese-like odor of the edible pulp in its seed pods.

Fruit Its fruit, also known as locust, was a major food for indigenous peoples. Those who eat it do not consider the odor unpleasant. The pulp, in spite of its somewhat disagreeable odor, has a sweet taste; is consumed raw; may be dried and transformed into powder to be incorporated into cookies, crackers, and soups; and may be mixed with water to prepare a drink called "atole". The pulp inside the hard shells appears like miniature soluble fibers that dissolve easily in water or milk, which it thickens. Some add sugar to it for more sweetness. If consumed raw it tends to stick inside the mouth like dry dust. It is one of the richest vegetable foods known because of its high concentrations of starches and proteins. It is further an excellent concentrated feed for animals.

Animé

The tree produces an orange, soft, sticky resin or gum, called "animé" (French for "animated", in reference to its insect-infested natural state). The resin has a specific gravity varying from 1.054 to 1.057. It melts readily over fire, and softens even with the heat of the mouth. It diffuses white fumes and a very pleasant odor. Insects are generally entrapped in it in large numbers. It is insoluble in water, and nearly so in cold alcohol. It is similar to copal in its nature and appearance, and a copal from Zanzibar is sometimes given this name. The production of animé may be encouraged by wounding the bark. The resin collects between the principal roots. It can be obtained from other species of Hymenaea growing in tropical South America. Brazilians use it internally to treat diseases of the lungs. It was formerly an ingredient of ointments and plasters, but at present its only use is for incense and varnish.

Wood The wood is very hard, measuring 5.6 on the Brinell scale and 2,350 lbf (10,500 N) on the Janka scale, approximate measurements of hardness. For comparison, Douglas fir measures 660 lbf (2,900 N), white oak 1,360 lbf (6,000 N), and Brazilian walnut 3,800 lbf (17,000 N) on the Janka scale. It features a tan to salmon color with black accent stripes that over time turn to a deep and vibrant red.

Notes

References Baynes, T. S., ed. (1878), "Animé" , Encyclopædia Britannica, vol. 2 (9th ed.), New York: Charles Scribner's Sons, p. 55 Attribution:

This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911), "Animé", Encyclopædia Britannica, vol. 2 (11th ed.), Cambridge University Press, pp. 52–53

External links Media related to Hymenaea courbaril at Wikimedia Commons Data related to Hymenaea courbaril at Wikispecies

Illustrations

Hymenaea courbaril illustration
Hymenaea courbaril illustration
Hymenaea courbaril illustration
Hymenaea courbaril: Hymenaea courbaril
Hymenaea courbaril
Hymenaea courbaril: Hymenaea courbaril plank, oiled with lemon oil
Hymenaea courbaril plank, oiled with lemon oil

Worked examples

Example 1 — a first encounter with Hymenaea courbaril

Start with the simplest possible case. Write down what Hymenaea courbaril claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hymenaea courbaril before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hymenaea courbaril ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hymenaea courbaril

In research
Hymenaea courbaril appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hymenaea courbaril in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hymenaea courbaril is common in secondary-school and first-year university syllabi. It links to neighbouring topics Botanical taxa named by Carl Linnaeus, Flora of Mexico, Hardwood forest plants, so understanding it makes those chapters shorter.
In everyday life
Look for Hymenaea courbaril outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Hymenaea courbaril in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hymenaea courbaril means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hymenaea courbaril out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hymenaea courbaril in simple terms?

Hymenaea courbaril, the courbaril or West Indian locust, is a hardwood tree common in the Caribbean and Central and South America. As lumber it is frequently used to make furniture, flooring, and decoration.

Why does Hymenaea courbaril matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hymenaea courbaril?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hymenaea courbaril.

Tags

  • Botanical taxa named by Carl Linnaeus
  • Flora of Mexico
  • Hardwood forest plants
  • Hymenaea
  • IUCN Red List least concern species
  • Plants described in 1753
  • Trees of South America
  • Trees of Îles des Saintes

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