Cassia fistula | |
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Golden shower tree in bloom | |
Scientific classification | |
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 | |
Synonyms [2] | |
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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 and Delhi UT in India. [6] It is also a popular ornamental plant and is also used in herbal medicine.
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]
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]
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]
It is used in Vishu festivals as a traditional trademark in Kerala.
In India, flowers of the golden shower tree are sometimes eaten by people. The leaves have also been used to supplement the diets of cattle, sheep, and goats fed with low-quality forages. [13]
In Ayurvedic medicine, the golden shower tree is known as aragvadha, meaning "disease killer". The fruit pulp is considered a purgative, [14] [15] 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]
Within developing countries, approximately 80% of populations prefer the usage of traditional medicine to resolve primary medical symptoms. [16] 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. [17]
In India, a cathartic made from the pulp is sometimes added to tobacco. [18]
Cassia fistula flower extract displayed an anti-aging properties when introduced to the human skin fibroblast and has a variety of cosmetic and nutritional applications. It displays an ability to cause hypopigmentation and can be applied as a whitening agent. [19]
Cassia fistula is both the national tree and national flower of Thailand – in Thai ratchaphruek (Thai: ราชพฤกษ์) and the blossoms are commonly referred to as dok khun (Thai: ดอกคูน). [20] 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 [21] 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. [22] The tree is also the provincial tree of the North Central Province of Sri Lanka.
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. [23]
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. [24]
Laburnum, sometimes called golden chain or golden rain, is a genus of two species of small trees in the subfamily Faboideae of the pea family Fabaceae. The species are Laburnum anagyroides—common laburnum and Laburnum alpinum—alpine laburnum. They are native to the mountains of southern Europe from France to the Balkans.
Cassia is a genus of flowering plants in the legume family, Fabaceae, and the subfamily Caesalpinioideae. Species are known commonly as cassias. The genus includes 37 species and has a pantropical distribution. Species of the genera Senna and Chamaecrista were previously included in Cassia. Cassia now generally includes the largest species of the legume subtribe Cassiinae, usually mid-sized to tall trees.
Vishu is a festival celebrating the Malayali New Year in Kerala, Tulu Nadu, and Mahe of India. Vishu falls on the first day of the month of Medam in the Malayalam Calendar. It is the traditional new year, while the Kollam era calendar new year falls on the 1st Chingham.
Strychnos nux-vomica, the strychnine tree, also known as nux vomica, poison fruit, semen strychnos, and quaker buttons, is a deciduous tree native to India and to southeast Asia. It is a medium-sized tree in the family Loganiaceae that grows in open habitats. Its leaves are ovate and 5–9 centimetres (2–3.5 in) in size. It is known for being the natural source of the extremely poisonous compound strychnine.
Osmanthus fragrans, variously known as sweet osmanthus, sweet olive, tea olive, and fragrant olive, is a flowering plant species native to Asia from the Himalayas through the provinces of Guizhou, Sichuan and Yunnan in China, Taiwan, southern Japan and Southeast Asia as far south as Cambodia and Thailand.
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.
Mesua ferrea, the Ceylon ironwood, or cobra saffron, is a species in the family Calophyllaceae native to the Indomalayan realm. This slow-growing tree is named after the heaviness and hardness of its timber. It is widely cultivated as an ornamental for its graceful shape, grayish-green foliage with a beautiful pink to red flush of drooping young leaves, and large, fragrant white flowers. It is the national tree of Sri Lanka, as well as the state tree of Mizoram and state flower of Tripura in India.
Lagerstroemia speciosa is a species of Lagerstroemia native to tropical southern Asia. It is a deciduous tree with bright pink to light purple flowers.
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.
The Royal Flora Ratchaphruek was an international horticultural exposition held 1 November, 2006 to 31 January, 2007 at Mae Hia,Chiang Mai Province, Thailand that drew 3,781,624 visitors. Recognised by the Bureau International des Expositions (BIE), it was one of the grand celebrations hosted by the Royal Thai Government in honor of King Bhumibol, the world's longest reigning monarch.
Madhuca longifolia is an Indian tropical tree found largely in the central, southern, north Indian plains and forests, Nepal, Myanmar and Sri Lanka. It is commonly known as madhūka, mahura,madkam, mahuwa, Butter Tree,mahura, mahwa, mohulo, Iluppai, Mee or Ippa-chettu. It is a fast-growing tree that grows to approximately 20 meters in height, possesses evergreen or semi-evergreen foliage, and belongs to the family Sapotaceae. It is adaptable to arid environments, being a prominent tree in tropical mixed deciduous forests in India in the states of Maharashtra, Odisha, Chhattisgarh, Jharkhand, Uttar Pradesh, Bihar, Andhra Pradesh, Madhya Pradesh, Kerala, Gujarat, West Bengal and Tamil Nadu.
Senna alata is an important medicinal tree, as well as an ornamental flowering plant in the subfamily Caesalpinioideae. It also known as emperor's candlesticks, candle bush, candelabra bush, Christmas candles, empress candle plant, ringworm shrub, or candletree. A remarkable species of Senna, it was sometimes separated in its own genus, Herpetica.
Senna auriculata is a leguminous tree in the subfamily Caesalpinioideae. It is commonly known by its local names matura tea tree, avaram or ranawara, or the English version avaram senna. It is the State flower of Indian state of Telangana. It occurs in the dry regions of India and Sri Lanka. It is common along the sea coast and the dry zone in Sri Lanka.
Laburnum anagyroides, the common laburnum, golden chain or golden rain, is a species of flowering plant in the subfamily Faboideae, and genus Laburnum. Laburnum alpinum is closely related. It is native to Central and Southern Europe.
Oroxylum indicum is a species of flowering plant of the monotypic genus Oroxylum in the family Bignoniaceae. It is commonly called Indian trumpet tree, oroxylum, Indian trumpet flower, broken bones, scythe tree, tree of Damocles, or midnight horror It can reach a height of 18 metres (59 ft). Various segments of the tree are used in traditional medicine.
Dolichandrone spathacea, also known as tui or mangrove trumpet tree, is a species of plant in the family Bignoniaceae. It is found from South India, Sri Lanka to New Caledonia.
Cassia javanica, also known as Java cassia, pink shower, apple blossom tree and rainbow shower tree, is a species of tree in the family Fabaceae. Its origin is in Southeast Asia, but it has been extensively grown in tropical areas worldwide as a garden tree owing to its beautiful crimson and pink flower bunches.
Gyeolmyeongja-cha or sicklepod tea is a tea made from roasted seeds of Senna spp., especially S. obtusifolia and S. tora.
Senna pendula, also known as Easter Cassia, Christmas Senna, winter Senna, climbing Cassia, golden shower, pendant Senna and valamuerto, is a plant of the Fabaceae family with a shrub habit that is native to South America. It used in various parts of the world as an ornamental plant and is an environmental weed in Australia. The flowers are yellow and the name pendula means 'pendulous' or 'drooping'.
The medical ethnobotany of India is the study of Indian medicinal plants and their traditional uses. Plants have been used in the Indian subcontinent for treatment of disease and health maintenance for thousands of years, and remain important staples of health and folk medicine for millions. Indians today utilize plants for both primary medical care and as supplementary treatment alongside modern medical science. It is estimated that 70% of rural Indians use traditional plant based remedies for primary healthcare needs. This reliance of plants for medicine is consistent with trends widely observed in the developing world, where between 65% and 80% of people use medicinal plant remedies.