Vegetable ivory or tagua nut is a product made from the very hard white endosperm of the seeds of certain palm trees. Vegetable ivory is named for its resemblance to animal ivory. Vegetable ivory is naturally white with a fine marbled grain structure. It can be dyed; dyeing often brings out the grain. It is still commonly used in buttons, jewelry, and artistic carving.
Species in the genus Phytelephas (literally "elephant plant"), native to South America, are the most important sources of vegetable ivory. The seeds of the Caroline ivory-nut palm from the Caroline Islands, natangura palm from Solomon Islands and Vanuatu, [1] and the real fan palm, from Sub-Saharan Africa, are also used to produce vegetable ivory. [2]
A tagua palm can take up to 15 years to mature. But once it gets to this stage it can go on producing vegetable ivory for up to 100 years. In any given year a tagua palm can produce up to 20 pounds of vegetable ivory. [3]
Some species from which vegetable ivory is harvested are: [4]
An early use of vegetable ivory, attested from the 1880s, was the manufacture of buttons. The material is called corozo or corosso when used in buttons. Rochester, New York was a center of manufacturing where the buttons were "subjected to a treatment which is secret among the Rochester manufacturers", presumably improving their "beauty and wearing qualities". [5] Before plastic became common in button production, about 20% of all buttons produced in the US were made of vegetable ivory. [6]
Vegetable ivory has been used extensively to make dice, knife handles, and chess pieces. It is a very hard and dense material. Similar to stone, it is too hard to carve with a knife but instead requires hacksaws and files. [1]
Many vegetable ivory buttons were decorated in a way that used the natural tagua nut colour as a contrast to the dyed surface, because the dye did not penetrate deeper than the very first layer. [1] [7] This also helps identify the material.
In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering.
A netsuke is a miniature sculpture, originating in 17th century Japan. Initially a simply-carved button fastener on the cords of an inrō box, netsuke later developed into ornately sculpted objects of craftsmanship.
A guitar pick is a plectrum used for guitars. Picks are generally made of one uniform material, such as some kind of plastic, rubber, felt, tortoiseshell, wood, metal, glass, tagua, thermosetting plastic or stone. They are often shaped in an acute isosceles triangle with the two equal corners rounded and the third corner less rounded. They are used to strum chords or to sound individual notes on a guitar.
A button is a fastener that joins two pieces of fabric together by slipping through a loop or by sliding through a buttonhole.
Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. Dye molecules are fixed to the fiber by absorption, diffusion, or bonding with temperature and time being key controlling factors. The bond between the dye molecule and fiber may be strong or weak, depending on the dye used. Dyeing and printing are different applications; in printing, color is applied to a localized area with desired patterns. In dyeing, it is applied to the entire textile.
The palm tree Phytelephas aequatorialis, commonly known as Ecuadorian ivory palm, is the main source of Ecuadorean vegetable ivory or tagua, a botanical alternative to ivory. It is found in the tropical rainforests of the western Andean slopes of Ecuador. It has a woody trunk which can grow to 20 m in height and very long pinnate leaves.
Tumaco is a port city and municipality in the Nariño Department, Colombia, by the Pacific Ocean. It is located on the southwestern corner of Colombia, near the border with Ecuador, and experiences a hot tropical climate. Tumaco is inhabited mainly by Afro-Colombians and some indigenous people.
Phytelephas is a genus containing six known species of dioecious palms, occurring from southern Panama along the Andes to Ecuador, Bolivia, Colombia, northwestern Brazil, and Peru. They are commonly known as ivory palms, ivory-nut palms or tagua palms ; the scientific name Phytelephas means "plant ivory" or more literally, "plant elephant". This and the first two of the common names refer to the very hard white endosperm of their seeds, which resembles elephant ivory.
Astrocaryum vulgare is a very spiny palm native to the Guianas and the Amazon. It is a species which has greatly benefited from deforestation, as it cannot grow in undisturbed rainforest. It is common in the Pará state of Brazil, to the east of the Amazon. This plant has edible fruit.
Attalea speciosa, the babassu, babassu palm, babaçu, or cusi, is a palm native to the Amazon Rainforest region in South America. The babassu palm is the predominant species in the Maranhão Babaçu forests of Maranhão and Piauí states.
African textiles are textiles from various locations across the African continent. Across Africa, there are many distinctive styles, techniques, dyeing methods, and decorative and functional purposes. These textiles hold cultural significance and also have significance as historical documents of African design.
Phytelephas seemannii, commonly called Panama ivory palm, is a species of flowering plant in the family Arecaceae. It is one of the plants used for vegetable ivory.
Coconut jewelry has been made for generations by people in the rainforests and coasts of South America. The three types of coconut used in the production of the rings and earrings are known as palm nuts. The Pati (pah-chee), the Dende (den-day), and the Piasava (pee-ah-sava) palm nuts are related to the Tagua nut of Africa, also known as vegetable ivory. When tumbled and polished these types of coconuts reveal the beautiful colors that lay hidden beneath their raw outer surface.
Ammandra is a monotypic genus of flowering plants in the palm family found in Colombia and Ecuador, where it is endangered. The sole species is Ammandra decasperma, although another species name has been proposed. It is a pinnate-leaved, dioecious palm whose seeds and petioles are used in button and basket making, respectively. It is commonly called ivory palm or cabecita.
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.
Dyeing is the craft of imparting colors to textiles in loose fiber, yarn, cloth or garment form by treatment with a dye. Archaeologists have found evidence of textile dyeing with natural dyes dating back to the Neolithic period. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years. Natural insect dyes such as Tyrian purple and kermes and plant-based dyes such as woad, indigo and madder were important elements of the economies of Asia and Europe until the discovery of man-made synthetic dyes in the mid-19th century. Synthetic dyes quickly superseded natural dyes for the large-scale commercial textile production enabled by the industrial revolution, but natural dyes remained in use by traditional cultures around the world.
Raphia farinifera is a tropical African palm tree occurring in lowland riparian and swamp forest, also around human habitations and cultivated locations, on stream banks and other moist situations at altitudes of 50–1000 m. Found in Angola, Benin, Burkina, Cameroon, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Réunion, Senegal, Seychelles, Sierra Leone, Tanzania, Togo, Uganda, Zambia and Zimbabwe, and naturalised in east lowlands of Madagascar. Its generic epithet is derived from raphis = 'needle', probably in reference to the 4 mm long yellowish spines on the margins and main veins of the leaflets. The specific name refers to a type of starchy flour obtained from the trunk pith – farina = 'starch', fera = 'bearing'.
Phytelephas macrocarpa is a single-stemmed, unarmed, reclining or erect palm from the extreme northern coastal regions of South America, growing to some 12 m tall. It has been introduced and cultivated in tropical regions all over the world. The trunk is about 30 cm across, with prominent leaf scars. The crown is made up of about 30 plume-like leaves or fronds, each about 8 m long, dead leaves being persistent. It is one of some 7 species of palm in the genus Phytelephas, all of which have been exploited for vegetable ivory or tagua from the seed or corozo nut. The closely related Ammandra decasperma from Colombia, and Aphandra natalia from Ecuador, are also sources of vegetable ivory, but of inferior quality and therefore not commercially significant. 'Phytelephas macrocarpa' translates to ‘elephant plant’ with 'large fruit', the endosperm of the nut having the texture of elephant ivory, and consisting of large, thick-walled cells of two long-chain polysaccharides, mannan A and B.
Phytelephas tenuicaulis is a species of palm in the genus Phytelephas. The compound leaves are around 7 meters in length, with stem diameters of 10 cm. Brown, ovulate fruits of about 6 cm are produced. Palms of the Phytelephas genus are also referred to as vegetable ivory palms.
