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Pterocarpus santalinus

Pterocarpus santalinus 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 Pterocarpus santalinus rather than just read about it. In short: Pterocarpus santalinus, with the common names red sanders, red saunders, Yerra Chandanam, Chenchandanam, red sandalwood, Rakta Chandana, and rakto chandon, is a species of Pterocarpus endemic to the southern Eastern Ghats mountain range of South India. It is known for its red colour and has been used for furniture, musical instruments, and traditional herbal medicine.

Pterocarpus santalinus — main illustration
Pterocarpus santalinus — illustration

Key takeaways

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

Reference excerpt

Pterocarpus santalinus, with the common names red sanders, red saunders, Yerra Chandanam, Chenchandanam, red sandalwood, Rakta Chandana, and rakto chandon, is a species of Pterocarpus endemic to the southern Eastern Ghats mountain range of South India. It is known for its red colour and has been used for furniture, musical instruments, and traditional herbal medicine. Because of the high market value for its timber, the species has been overexploited, and illegal trade remains a problem. It is listed as Near Threatened on the IUCN Red List. It should not be confused with the aromatic Santalum sandalwood trees native to southern India.

Description

Pterocarpus santalinus is a light-demanding small tree, growing to 8 metres (26 ft) tall with a trunk 50–150 cm (20–59 in) diameter. It is fast-growing when young, reaching 5 metres (16 ft) tall in three years, even on degraded soils. It is not frost tolerant, being killed by temperatures of −1 °C (30 °F). The leaves are alternate, 3–9 cm (1.2–3.5 in) long, trifoliate with three leaflets. The flowers are produced in short racemes. The fruit is a pod 6–9 cm (2.4–3.5 in) long containing one or two seeds.

Uses

Timber

The wood has historically been valued in China, particularly during the Qing dynasty periods, and is referred to in Chinese as zitan (紫檀) and spelt tzu-t'an by earlier western authors such as Gustav Ecke, who introduced classical Chinese hardwood furniture to the west. An exquisite chair made of red sandalwood can be seen today in China's Forbidden City in Beijing, inside the Hall of Supreme Harmony, and once used by the emperors of the Qing dynasty. Due to its slow growth and rarity, furniture made from zitan is difficult to find and can be expensive. It has been one of the most prized woods for millennia. In India red sandalwood is one main and lucrative market for smugglers, as a high price is paid for this wood in China. Since the exporting of sandalwood is illegal in India, the underground market is growing and there are a number of arrests every year of those trying to smuggle this wood to China. The other form of zitan is from the species Dalbergia louvelii, Dalbergia maritima, and Dalbergia normandii, all similar species named in trade as bois de rose or violet rosewood which when cut are bright crimson purple changing to dark purple again. It has a fragrant scent when worked.

Shamisen Red sandalwood has been used for making the bridge and also the neck of the Japanese musical instrument shamisen. The heartwood is preferred for this purpose.

Medicinal values Pterocarpus santalinus is used in traditional herbal medicine as an antipyretic, anti-inflammatory, anthelmintic, tonic, hemorrhage, dysentery, aphrodisiac, anti-hyperglycaemic and diaphoretic.

Grading of red sandalwood Red sandalwood grown on the shale subsoils, at altitudes around 750 metres (2,460 ft), and in semi-arid climatic conditions gives a distinctive wavy grain margin. Lumber pieces with the wavy grain margin are graded as "A" grade. Red sandalwood with wavy grain margins sells at higher prices than the standard wood.

Conservation status Pterocarpus santalinus was listed as an Endangered species by the IUCN, because of overexploitation for its timber in South India; however, it was later reclassified to Near Threatened in 2018, as the scale of this loss is not properly known. It is also listed in the appendix II of the CITES, which means that a certificate is required in order to export it, that should only be granted if the trade is not detrimental to the survival of the species.

Gallery

See also Adenanthera pavonina Algum Pushpa: The Rise Pushpa 2: The Rule

Notes

References

External links

"Rosewood, Dragon's Blood, and Lac" (journal article) at JSTOR 594922

Illustrations

Pterocarpus santalinus illustration
Pterocarpus santalinus illustration
Pterocarpus santalinus: In Talakona forest, in Tirupati district of Andhra Pradesh, India
In Talakona forest, in Tirupati district of Andhra Pradesh, India
Pterocarpus santalinus: Seized red sandalwood logs at Forest office, Tirupati
Seized red sandalwood logs at Forest office, Tirupati
Pterocarpus santalinus: Chess pieces in red sandalwood
Chess pieces in red sandalwood

Worked examples

Example 1 — a first encounter with Pterocarpus santalinus

Start with the simplest possible case. Write down what Pterocarpus santalinus 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 Pterocarpus santalinus 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 Pterocarpus santalinus 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 Pterocarpus santalinus

In research
Pterocarpus santalinus 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 Pterocarpus santalinus 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
Pterocarpus santalinus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eastern Ghats, Endemic flora of India (region), Environment of Andhra Pradesh, so understanding it makes those chapters shorter.
In everyday life
Look for Pterocarpus santalinus 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 Pterocarpus santalinus in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Pterocarpus santalinus 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 Pterocarpus santalinus out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pterocarpus santalinus in simple terms?

Pterocarpus santalinus, with the common names red sanders, red saunders, Yerra Chandanam, Chenchandanam, red sandalwood, Rakta Chandana, and rakto chandon, is a species of Pterocarpus endemic to the southern Eastern Ghats mountain range of South India. It is known for its red colour and has been us…

Why does Pterocarpus santalinus 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 Pterocarpus santalinus?

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 Pterocarpus santalinus.

Tags

  • Eastern Ghats
  • Endemic flora of India (region)
  • Environment of Andhra Pradesh
  • Flora of Tamil Nadu
  • IUCN Red List near threatened species
  • Pterocarpus
  • Taxa named by Carl Linnaeus the Younger
  • Threatened flora of Asia
  • Wood

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