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Naturally dyed skeins made with madder root, Colonial Williamsburg, VA. Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals.The majority of natural dyes are vegetable dyes from plant sources—roots, berries, bark, leaves, and wood—and other biological sources such as fungi.
Indian yellow is a complex pigment consisting primarily of euxanthic acid salts (magnesium euxanthate and calcium euxanthate), [2] euxanthone and sulphonated euxanthone. [3] It is also known as purree, snowshoe yellow, gaugoli, gogili, Hardwari peori, Monghyr puri, peoli, peori, peri rung, pioury, piuri, purrea arabica, pwree, jaune indien (French, Dutch), Indischgelb (German), yìndù huáng ...
The brilliant iridescent colors of the peacock's tail feathers are created by structural coloration, as first noted by Isaac Newton and Robert Hooke.. Structural coloration in animals, and a few plants, is the production of colour by microscopically structured surfaces fine enough to interfere with visible light instead of pigments, although some structural coloration occurs in combination ...
An ancient tree from India is now thriving in groves where citrus trees once flourished in Florida, and could help provide the nation with renewable energy. As large parts of the Sunshine State ...
Leaf of Koelreuteria paniculata var. paniculata. Koelreuteria paniculata is a species of flowering plant in the family Sapindaceae, native to China. Naturalized in Korea and Japan since at least the 1200s, [3] it was introduced in Europe in 1747, and to America in 1763, and has become a popular landscape tree worldwide.
The local Urdu and Punjabi names for the tree is sumbal. The 1889 book The Useful Native Plants of Australia records that the tree was at that time known as Bombax malabaricum, its common names included "Simool Tree" or "Malabar Silk-cotton Tree of India", and that the calyx of the flower-bud was eaten as a vegetable in India. [5] [page needed]
Leucaena leucocephala has been considered for biomass production because its reported yield of foliage corresponds to a dried mass of 2,000–20,000 kg/ha/year, and that of wood 30–40 m³/ha/year, with up to twice those amounts in favorable climates. In India it is being promoted for both fodder and energy. [19]
The tree is a host of the lac bug Kerria lacca, whose female secretes a resin known as shellac to form a tunnel-like tube as it traverses the branches of the tree. A variety of trees are able to host the insect, but the resin produced on the Schleichera tree is least colored.