Cassia fistula

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Cassia fistula
Golden shower tree.jpg
Golden shower tree in bloom
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Genus: Cassia
Species:
C. fistula
Binomial name
Cassia fistula
L.
Synonyms [2]
  • Bactyrilobium fistulaWilld.
  • Cassia bonplandianaDC.
  • Cassia excelsaKunth
  • Cassia fistuloidesCollad.
  • Cassia rhombifoliaRoxb.
  • Cathartocarpus excelsusG.Don
  • Cathartocarpus fistulaPers.
  • Cathartocarpus fistuloides(Collad.) G.Don
  • Cathartocarpus rhombifoliusG.Don
Blossomed golden shower tree Golden shower tree in Malappuram.jpg
Blossomed golden shower tree

Cassia fistula, also known as golden shower, [3] purging cassia, [4] Indian laburnum, [5] kani konna, [6] or pudding-pipe tree, [7] is a flowering plant in the family Fabaceae. The species is native to the Indian subcontinent and adjacent regions of Southeast Asia. It is the official state flower of Kerala state in India. [6] It is also a popular ornamental plant and is also used in herbal medicine.

Contents

Description

The golden shower tree is a medium-sized tree, growing to 10–20 m (33–66 ft) tall with fast growth. The leaves are deciduous, 15–60 cm (6–24 in) long, and pinnate with three to eight pairs of leaflets, each leaflet 7–21 cm (3–8 in) long and 4–9 cm (1+1⁄2–3+1⁄2 in) broad.

The flowers are produced in pendulous racemes 20–40 cm (8–16 in) long, each flower 4–7 cm (1+5⁄8–2+3⁄4 in) diameter with five yellow petals of equal size and shape. The fruit is a legume, 30–60 cm (12–24 in) long and 1.5–2.5 cm (9⁄16–1 in) broad, with a pungent odor and containing several seeds.

The tree has strong and very durable wood, and has been used to construct "Ehela Kanuwa", a site at Adam's Peak, Sri Lanka, which is made of C. fistula (ahala, ehela, or aehaela, ඇහැල in Sinhala [8] ) heartwood. The golden shower tree is not a nitrogen fixer. [9]

Cultivation

Cassia fistula is widely grown as an ornamental plant in tropical and subtropical areas. It blooms in late spring/early summer in hot, dry weather. Flowering is profuse, with trees being covered with yellow flowers, many times with almost no visible leaves. It grows well in dry climates. Growth for this tree is best in full sun on well-drained soil; it is relatively drought-tolerant and slightly salt-tolerant. It will tolerate light brief frost, but can get damaged if the cold persists. It can be subject to mildew or leaf spot, especially during the second half of the growing season. The tree blooms better with pronounced differences between summer and winter temperatures. [10]

Pollinators and seed dispersal

Various species of bees and butterflies are known to be pollinators of C. fistula flowers, especially carpenter bees (Xylocopa sp.). [11] In 1911, Robert Scott Troup conducted an experiment to determine how the seeds of C. fistula are dispersed. He found that golden jackals feed on the fruits and help in seed dispersal. [12]

Uses

It is used in Vishu festivals as a traditional trademark in Kerala.

Food

In India, flowers of the golden shower tree are sometimes eaten by people. It was also eaten in 14th century France. [13] The leaves have also been used to supplement the diets of cattle, sheep, and goats fed with low-quality forages. [14]

Medical

In Ayurvedic medicine, the golden shower tree is known as aragvadha, meaning "disease killer". The fruit pulp is considered a purgative, [15] [16] and self-medication or any use without medical supervision is strongly advised against in Ayurvedic texts. Though it has been used in herbalism for millennia, little research has been conducted in modern times, although it is an ingredient in some mass-produced herbal laxatives. When used as such, it is known as "cassia pods". [7]

Many individual especially within the developing countries, approximately 80% of the populations prefer the usage of traditional medicine to resolve primary medical symptoms. [17] The medicines and drugs derived from plants along with other herbal formulations are considered low risk and have less side effects in comparison to modern medicine by many locals especially within the Asian communities. [18]

In India, a cathartic made from the pulp is sometimes added to tobacco. [19]

Cosmetic

The Cassia fistula flower extract displayed an anti-aging properties when introduced to the human skin fibroblast which can be applied in variety of cosmetic applications as a nutritional sources and displays a ability to cause hyper pigmentation which can be applied as a whitening agent. [20]

Culture

Cassia fistula is both the national tree and national flower of Thailand – in Thai ratchaphruek (Thai: ราชพฤกษ์) and the blossoms commonly referred to as dok khun (Thai: ดอกคูน). [21] Its yellow flowers symbolize Thai royalty. A 2006–2007 flower festival, the Royal Flora Ratchaphruek, was named after the tree. Cassia fistula is also featured on a 2003 joint Canadian-Thai design for a 48-cent stamp, part of a series featuring national emblems. [10]

The Indian laburnum is the state flower of Kerala. The flowers are of ritual importance in preparation of Kani during the Vishu festival of Kerala [22] which falls in the month of April.The tree has been depicted on a 20-rupee stamp.

The tree is frequently cultivated in Buddhist temples in Sri Lanka where the Sinhala name is Ehela, ඇහැල. [23]

In Laos, its blooming flowers known locally as dok khoun are associated with the Lao New Year. People use the flowers as offerings at the temple and also hang them in their homes for the New Year in belief that the flowers will bring happiness and good luck to the households. [24]

The laburnum is the school tree of National Taiwan Normal University, thought to be because of the seed pods' similarity to the whips used by teachers in times past. [25]

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<i>Senna spectabilis</i> Species of legume

Senna spectabilis is a plant species of the legume family (Fabaceae) in the subfamily Caesalpinioideae native to South and Central America. They are often grown as an ornamental in front yards, parks, gardens, buildings etc. due to their bright yellow flowers that bloom during the summer months. They are also known as golden wonder tree, American cassia, popcorn tree, Cassia excelsa, golden shower tree or Archibald's cassia.

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<i>Erythrina variegata</i> Species of legume

Erythrina variegata, commonly known as tiger's claw or Indian coral tree, is a species of Erythrina native to the tropical and subtropical regions of eastern Africa, the Indian subcontinent, northern Australia, and the islands of the Indian Ocean and the western Pacific Ocean east to Fiji.

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<i>Laburnum anagyroides</i> Species of plant

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<i>Oroxylum indicum</i> Species of tree

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<i>Dolichandrone spathacea</i> Species of flowering plant

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<i>Cassia javanica</i> Species of legume

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References

  1. ↑ Botanic Gardens Conservation International & IUCN SSC Global Tree Specialist Group (2018). "Cassia fistula". IUCN Red List of Threatened Species . 2018: e.T136142327A136142329. Retrieved 7 May 2022.
  2. ↑ "The Plant List: A Working List of All Plant Species" . Retrieved June 19, 2014.
  3. ↑ USDA, NRCS (n.d.). "Cassia fistula". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved January 11, 2016.
  4. ↑ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  5. ↑ "Cassia fistula". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved April 2, 2019.
  6. 1 2 "Early konna blooms in Kochi set off alarm bells". February 14, 2019.
  7. 1 2 U. S. Department of Agriculture, William Saunders; Catalogue of Economic Plants in the Collection of the U. S. Department of Agriculture; Washington D. C.; June 5, 1891
  8. ↑ sinhala botany website
  9. ↑ Datiles, Marianne Jennifer; Acevedo-Rodríguez, Pedro. "Cassia fistula (Indian laburnum)". Invasive Species Compendium . CABI.
  10. 1 2 "Cassia Fistula (aburnum, Purging Fistula, Golden Shower, Amaltas)", Ayurveda - Herbs, 4 to 40, archived from the original on 2011-07-14, retrieved 2011-01-20
  11. ↑ Murali, KS (1993) Differential reproductive success in Cassia fistula in different habitats—A case of pollinator limitations? In: Current Science (Bangalore), 65 (3). pp. 270-272.
  12. ↑ Troup, R.S. (1911).Silviculture of Indian Trees. Published under the authority of His Majesty's Secretary of State for India in Council. Oxford Clarendon Press
  13. ↑ "Le Viandier de Taillevent: 14th Century Cookery, Based on the Vatican Library Manuscript". Translated by Prescott, James. Eugene, Oregon: Alfarhaugr Publishing Society. 1989. p. 27. Archived from the original on March 2, 2021. Retrieved December 7, 2023.
  14. ↑ Heuzé V., Thiollet H., Tran G., Hassoun P., Lebas F., 2018. Golden tree (Cassia fistula). Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. https://www.feedipedia.org/node/325
  15. ↑ Pole, Sebastian (2012). Ayurvedic Medicine: The Principles of Traditional Practice. Singing Dragon. p. 129. ISBN   978-1848191136 . Retrieved November 10, 2012.
  16. ↑ Bhagwan Dash, Vaidya (2002). Materia Medica Of Ayurveda. India: B. Jain. pp. 41–42. ISBN   9788170214939 . Retrieved November 10, 2012.
  17. ↑ Grover, J.K.; Vats, S Yadev (2002). "Medicinal plants of India with anti-diabetic potential". Journal of Ethnopharmacology. 81 (1): 81–100. doi:10.1016/S0378-8741(02)00059-4. PMID   12020931.
  18. ↑ Bailey, C. J.; Day, C (1989). "Traditional plant medicines as treatments for diabetes". Diabetes Care. 12 (8): 553–564. doi:10.2337/diacare.12.8.553. PMID   2673695.
  19. ↑ Hargreaves, Dorothy; Hargreaves, Bob (1970). Tropical Trees of the Pacific. Kailua, Hawaii: Hargreaves. p. 14.
  20. ↑ Limtrakul, Pornngarm; Yodkeeree, Supachai; Thippraphan, Pilaiporn; Punfa, Wanisa; Srisomboon, Jatupol (3 December 2016). "Anti-aging and tyrosinase inhibition effects of Cassia fistula flower butanolic extract". BMC Complementary and Alternative Medicine. 16. doi: 10.1186/s12906-016-1484-3 . PMC   5135822 .
  21. ↑ "ASEAN National Flowers". Association of Southeast Asian Nations. Archived from the original on 20 January 2012.
  22. ↑ "State Flower Golden shower". ENVIS Hub: Kerala. Retrieved 25 May 2022.
  23. ↑ "Botany Plant-names → Sinhala Plant names උද්භිද නම් → සිංහල නම්".
  24. ↑ Lao NEWS on LNTV: When the golden shower trees, known as Dok Khoun in Laos blossom.17/4/2014
  25. ↑ "School tree". NTNU University Archives. Retrieved 2022-11-14.
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