Wrightia tinctoria | |
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Flowers | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Gentianales |
Family: | Apocynaceae |
Genus: | Wrightia |
Species: | W. tinctoria |
Binomial name | |
Wrightia tinctoria | |
Wrightia tinctoria, Pala indigo plant or dyer's oleander, [1] is a flowering plant species in the genus Wrightia found in India, southeast Asia and Australia. It is found in dry and moist regions in its distribution. Various parts of the plant have been used in traditional medicine, but there is no scientific evidence it is effective or safe for treating any disease.
It is a small to medium-sized deciduous shrub or tree, ranging from 3–15 m (10–49 ft) in height [2] but also reaching up to 18 m. [3] The bark is smooth, yellowish-brown and about 10 mm thick, producing a milky-white latex. Leaves are simple, oppositely arranged, ovate, obtusely acuminate and are 10–20 cm long and 5 cm wide. Leaves are glabrous and sometimes pubescent beneath. [2] Leaf stalks are very short. The flowers appear (in India) from March to May, peaking from April to June. [2] [3] White flowers appear in corymb-like cymes, 5–15 cm across, at the end of branches. Flowers have five white petals 2–3 cm long which turn creamish yellow as they age. The flowers have oblong petals which are rounded at the tip, and are similar to flowers of frangipani. Fruiting is in August [2] and the fruit is cylindrical, blackish-green speckled with white, long horn-like and united at tip. The seeds are brown and flat with bunch of white hairs. [3] Seed dispersal is by wind and pollination is by insects. [3] In his 1862 book on timber trees of South Asia, Edward Balfour mentions its distribution across the then Madras Presidency of British India especially in the Coimbatore jungles, and reports that it was "very common in all forests of Bombay". [4] In the same book, Balfour quotes William Roxburgh's comparison of the whiteness of the wood as "coming nearer to ivory than any I know". Earlier in 1824, the plant specimens were presented by the British East India Company to the Royal Horticultural Society as illustrated and recorded in botanical register founded by Sydenham Edwards and at the time published by James Ridgway. [5]
The plant contains wrightial, a triterpenoid phytochemical, [6] along with cycloartenone, cycloeucalenol, β-amyrin, and β-sitosterol isolated from the methanol extract of the immature seed pods.
The following are considered to be synonyms of Wrightia tinctoria: [7]
It is mainly found in Australia, India, Myanmar, Nepal, Timor and Vietnam. [2] Within India, it is found in most of the peninsular and central India except the northern and north-eastern states. [3]
It is a slow to moderate-growing plant. Plants commence flowering when about 5–8 years old. It grows in a wide range of soil types ranging from arid, semi-arid, gravely or rocky soils and moist regions, especially on dry sandy sites or hillsides and valleys. The tree responds well to coppicing, and also produces root suckers. [2] It tolerates moderate shading and is often found as undergrowth in deciduous forests. [2] It also tolerates high uranium levels in soils. [2] In India, the fungus Cercospora wrightia is known to cause leaf spot disease of Wrightia tinctoria. [8]
The flowers, leaves, fruits and seeds are edible. [8] The tree is harvested from the wild as a medicine and source of a dye and wood. Leaves are extracted as fodder for livestock. The leaves, flowers, fruits and roots are sources of indigo-yielding glucoside, which produces a blue dye or indigo- like dye. About 100–200 kilos of leaves are needed to prepare 1 kilo of dye. [2] It is occasionally planted as an ornamental in the tropics. The branches are trampled into the puddle soil in rice field for green manuring. It is recommended as a good agroforestry species as it intercrops well. [2] High levels of extraction is resulting in it becoming scarce in some regions. [8] The sap added to milk has been reported to have preservative properties; the milk will remain fresh for some time, the taste remaining unaltered. [8]
In Ayurveda and other traditional medicine practices, the plant is called shwetha kutaja and its seeds are called indrayava or indrajava. [9] There is no high-quality clinical evidence that it is safe or has any beneficial effect.
The white wood is used for turnery, carving, toy making, matchboxes, small boxes and furniture. The wood of Wrightia tinctoria, colloquially called Aale mara (ivory-wood), [10] is used extensively in Channapatna (a toy town of India) for carving and lacquer work of world famous Channapatna toys. [11] The timber is high in quality and valuable.
Alnus glutinosa, the common alder, black alder, European alder, European black alder, or just alder, is a species of tree in the family Betulaceae, native to most of Europe, southwest Asia and northern Africa. It thrives in wet locations where its association with the bacterium Frankia alni enables it to grow in poor quality soils. It is a medium-sized, short-lived tree growing to a height of up to 30 metres (98 feet). It has short-stalked rounded leaves and separate male and female flowers in the form of catkins. The small, rounded fruits are cone-like and the seeds are dispersed by wind and water.
Betula pubescens, commonly known as downy birch and also as moor birch, white birch, European white birch or hairy birch, is a species of deciduous tree, native and abundant throughout northern Europe and northern Asia, growing farther north than any other broadleaf tree. It is closely related to, and often confused with, the silver birch, but grows in wetter places with heavier soils and poorer drainage; smaller trees can also be confused with the dwarf birch.
Vitex lucens, or pūriri, is an evergreen tree endemic to New Zealand.
Acacia auriculiformis, commonly known as auri, karuvel in Tamil Nadu and Karnataka and aakashmani in West Bengal, is a fast-growing, crooked, gnarly tree in the family Fabaceae. It is native to Australia, Philippines, Indonesia, and Papua New Guinea. It grows up to 30 metres (98 ft) tall. Acacia auriculiformis has about 47,000 seeds per kilogram (21,000/lb).
Couroupita guianensis, known by a variety of common names including cannonball tree, is a deciduous tree in the flowering plant family Lecythidaceae. It is native to the tropical forests of Central and South America, and it is cultivated in many other tropical areas throughout the world because of its fragrant flowers and large fruits, which are brownish grey. There are potential medicinal uses for many parts of Couroupita guianensis, and the tree has cultural and religious significance in South and Southeast Asia. In Sri Lanka and India, the cannonball tree has been widely misidentified as the Sal tree, after its introduction to the island by the British in 1881, and has been included as a common item in Buddhist temples as a result.
Indigofera tinctoria, also called true indigo, is a species of plant from the bean family that was one of the original sources of indigo dye.
Baptisia australis, commonly known as blue wild indigo or blue false indigo, is a flowering plant in the family Fabaceae (legumes). It is a perennial herb native to much of central and eastern North America and is particularly common in the Midwest, but it has also been introduced well beyond its natural range. Naturally it can be found growing wild at the borders of woods, along streams or in open meadows. It often has difficulty seeding itself in its native areas due to parasitic weevils that enter the seed pods, making the number of viable seeds very low. The plant has low toxicity levels for humans.
Butea monosperma is a species of Butea native to tropical and sub-tropical parts of South Asia and Southeast Asia. It is also known as flame of the forest, dhak, palash, and bastard teak. Revered as sacred by Hindus, it is prized for producing an abundance of vivid blooms, and it is also cultivated elsewhere as an ornamental.
Olea capensis, the black ironwood, is an African tree species in the olive family Oleaceae. It is widespread in sub-Saharan Africa: from the east in Somalia, Ethiopia and Sudan, south to the tip of South Africa, and west to Cameroon, Sierra Leone and the islands of the Gulf of Guinea, as well as Madagascar and the Comoros. It occurs in bush, littoral scrub and evergreen forest.
Etikoppaka is a small village on the banks of Varaha River in Anakapalli district of Andhra Pradesh, India. In 2017, the traditional Etikoppaka toys acquired a geographical indication (GI) tag.
Persicaria tinctoria is a species of flowering plant in the buckwheat family. Common names include Chinese indigo, Japanese indigo and dyer's knotweed. It is native to Eastern Europe and Asia.
Ziziphus nummularia, commonly known as wild jujube or jhahrberi in Hindi, is a species of Ziziphus native to the Thar Desert of western India and southeastern Pakistan, south Iran, Afghanistan, Lebanon and Zimbabwe. Ziziphus nummularia is a shrub up to 6 metres (20 ft) or higher, branching to form a thicket. The leaves are rounded like those of Ziziphus jujuba but differ from those in having a pubescence on the adaxial surface. The plant is commonly found in arid areas, hills, plains, and agricultural fields.
Channapatna toys are a particular form of wooden toys and dolls that are manufactured in the town of Channapatna in the Ramanagara district of Karnataka state, India. This traditional craft is protected as a geographical indication (GI) under the World Trade Organization, administered by the Government of Karnataka. As a result of the popularity of these toys, Channapatna is known as the Gombegala Ooru (toy-town) of Karnataka. Traditionally, the work involved lacquering the wood of the Wrightia tinctoria tree, colloquially called Aale mara (ivory-wood).
Dalbergia sissoo, known commonly as North Indian rosewood or shisham, is a fast-growing, hardy, deciduous rosewood tree native to the Indian subcontinent and southern Iran. D. sissoo is a large, crooked tree with long, leathery leaves and whitish or pink flowers.
Symplocos tinctoria is a deciduous or evergreen shrub or tree. It is recognized by pith of twigs chambered; by foliage not notably aromatic when bruised, leaves finely hairy beneath. Shrubs or trees to 17 m tall by 36 cm diameter at breast height. The largest first-year twigs are under 3 mm across, terminal buds with acute tip, scales ciliate. Leaves are 7–15 cm long, margin entire or occasionally some teeth on the apical half, with a sweet taste that may be faint in old leaves. It is conspicuous when in flower; flowers opening before new leaves develop, fragrant, in clusters from axils of previous year's leaves or from just above the leaf scars if the leaves have fallen; the petals are creamy yellow to yellow, with one pistil. Fruits nearly cylindrical to ellipsoid drupes 8–12 mm long, with thin pulp and a hard stone containing one seed; the tip usually retaining parts of the sepals. Foliage is relished by browsing wildlife. A yellow dye may be obtained from bark and leaves. It flowers March to May.
Maesopsis eminii, the umbrella tree, is a species of tree in the family Rhamnaceae found in India and Africa. It is the only species in the genus Maesopsis. It is often grown as a plantation tree, and as a shade tree in coffee plantations and other crops. Birds and monkeys may disperse the seeds. Since this tree grows fast it is often used for regeneration of destroyed forest lands. Its timber is used for construction and firewood and its leaves for animal fodder.
Lomatia tinctoria, commonly known as guitar plant, is a shrub to about 2 metres tall of the family Proteaceae. It is one of three species of Lomatia endemic to Tasmania, the others being L. polymorpha and L. tasmanica. Lomatia tinctoria is closely related to L. polymorpha, with which it sometimes hybridises. Its leaves are divided, while those of L. polymorpha are simple.
Cola nitida is a species of plant belonging to the family Malvaceae.
Varnam is a social enterprise that has been working with artisans in Channapatna, Karnataka in India, for more than four years. It has produced a series of designs intended to bring this 200-year-old toy-making craft into the home and lifestyle. Using traditional lac-turnery methods popularized by the traditional Channapatna toys range, the label produces home and lifestyle products, toys and jewelry.
Erythrina berteroana is a species of small deciduous tree in the family Fabaceae. It is found in Mexico, Central America and the northern part of South America. Common names include elequeme, gallito, machete, pernila de casa, pito and poró de cerca. It is a common tree in the drier parts of its range and has many traditional uses.
wrightia tinctoria.