| Coca | |
|---|---|
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Erythroxylaceae |
| Genus: | Erythroxylum |
| Species: | E. coca |
| Binomial name | |
| Erythroxylum coca | |
Erythroxylum coca is one of two species of cultivated coca.
The coca plant resembles a blackthorn bush, and grows to a height of 2–3 m (7–10 ft). The branches are straight, and the leaves, which have a green tint, are thin, opaque, oval, and taper at the extremities. A marked characteristic of the leaf is an areolated portion bounded by two longitudinal curved lines, one line on each side of the midrib, and more conspicuous on the underside of the leaf.
The flowers are small, and disposed in little clusters on short stalks; the corolla is composed of five yellowish-white petals, the anthers are heart-shaped, and the pistil consists of three carpels united to form a three-chambered ovary. The flowers mature into red berries.
Unlike Erythroxylum novogranatense, Erythroxylum coca requires very acidic soil conditions. Soil acidity and water acidity need to be below pH 5.5, with the optimal value being pH 3.5, similar to that of Rhododendron potting soils. At pH 6.5 and above, chlorosis and leaf distortion occur. [1]
The leaves are sometimes eaten by the larvae of the moth Eloria noyesi .
Of the two cultivated species of coca, Erythroxylum coca has greater resistance to the use of glyphosate as an herbicide than Erythroxylum novogranatense. [2]
Among the genus Erythroxylum , cocaine-rich leaves are obtained from four taxa:
Erythroxylum coca var. ipadu, also known as Amazonian coca, is closely related to Erythroxylum coca var. coca, from which it originated relatively recently. [3] E. coca var. ipadu does not escape cultivation or survive as a feral or wild plant like E. coca var. coca [4] It has been suggested that due to a lack of genetic isolation to differentiate it from E. coca var. coca, E. coca var. ipadu may be better defined as a distinct cultivar than a taxonomic variety. [5]
Unlike the other species of coca which are propagated through seeds, E. coca var. ipadu, which rarely produce seeds, is propagated through stem cuttings which remain viable for several weeks if kept moist. [4] Since Amazonian coca is vegetatively propagated, entire plantations may be populated from the same clone. E. coca var. ipadu is specially adapted to the shifting agriculture of semi-nomadic Amazonian peoples. Since cuttings of E. coca var. coca do not easily root, it is likely that E. coca var. ipadu has been artificially selected for its ease of vegetative propagation. [4] In contrast to the Andean E. coca var. coca, Amazonian E. coca var. ipadu is typically a weaker plant evidenced by the fact that after a few years plants lose their vigor and easily fall prey to disease or insect infestation. Overharvesting can speed up this process. [6]
Amazonian coca is prepared differently than the other three cultivated cocas. After fire-toasting the leaves dry, they are pulverized. Once sifted, the powder is combined with ashes from plants which serve as the necessary alkaline admixture for coca chewing. [6]
In botany, a bulb is structurally a short stem with fleshy leaves or leaf bases that function as food storage organs during dormancy.
Coca is any of the four cultivated plants in the family Erythroxylaceae, native to western South America. Coca is known worldwide for its psychoactive alkaloid, cocaine.
Hydrangea, commonly named the hortensia, is a genus of more than 70 species of flowering plants native to Asia and the Americas. By far the greatest species diversity is in eastern Asia, notably China, Korea, and Japan. Most are shrubs 1–3 m tall, but some are small trees, and others lianas reaching up to 30 m (100 ft) by climbing up trees. They can be either deciduous or evergreen, though the widely cultivated temperate species are all deciduous.
Coca eradication is a strategy promoted by the United States government starting in 1961 as part of its "War on Drugs" to eliminate the cultivation of coca, a plant whose leaves are not only traditionally used by indigenous cultures but also, in modern society, in the manufacture of cocaine. The strategy was adopted in place of running educational campaigns against drug usage. The prohibitionist strategy is being pursued in the coca-growing regions of Colombia, Peru, and formerly Bolivia, where it is highly controversial because of its environmental, health and socioeconomic impact. Furthermore, indigenous cultures living in the Altiplano, such as the Aymaras, use the coca leaf in many of their cultural traditions, notably for its medicinal qualities in alleviating the feeling of hunger, fatigue and headaches symptomatic of altitude sicknesses. The growers of coca are named Cocaleros and part of the coca production for traditional use is legal in Peru, Bolivia and Chile.
Vegetative reproduction is a form of asexual reproduction occurring in plants in which a new plant grows from a fragment or cutting of the parent plant or specialized reproductive structures, which are sometimes called vegetative propagules.
Salix × fragilis, with the common names crack willow and brittle willow, is a hybrid species of willow native to Europe and Western Asia. It is native to riparian habitats, usually found growing beside rivers and streams, and in marshes and water meadow channels. It is a hybrid between Salix euxina and Salix alba, and is very variable, with forms linking both parents.
Vitis aestivalis, the summer grape, or pigeon grape is a species of grape native to eastern North America from southern Ontario east to Maine, west to Oklahoma, and south to Florida and Texas. It is a vigorous vine, growing to 10 m or more high in trees. The leaves are 7–20 cm long, suborbicular, and usually a little broader than long; they are variable in shape, from unlobed to deeply three- or five-lobed, green above, and densely hairy below. The flowers are produced at every 3rd node in a dense panicle 5–15 cm long. The fruit is a small grape 5–14 mm diameter, dark purple or black in colour. It is the official state grape of Missouri. Summer grape prefers a drier upland habitat.
Asclepias incarnata, the swamp milkweed, rose milkweed, rose milkflower, swamp silkweed, or white Indian hemp, is a herbaceous perennial plant species native to North America. It grows in damp through wet soils and also is cultivated as a garden plant for its flowers, which attract butterflies and other pollinators with nectar. Like most other milkweeds, it has latex containing toxic chemicals, a characteristic that repels insects and other herbivorous animals.
Canna indica, commonly known as Indian shot, African arrowroot, edible canna, purple arrowroot, Sierra Leone arrowroot, is a plant species in the family Cannaceae. It is native to much of South America, Central America, the West Indies, and Mexico. It is also naturalized in the southeastern United States, and much of Europe, sub-Saharan Africa, Southeast Asia, and Oceania.
Erythroxylum (Erythroxylon) is a genus of tropical flowering plants in the family Erythroxylaceae. Many of the approximately 200 species contain the tropane alkaloid cocaine, and two of the species within this genus, Erythroxylum coca and Erythroxylum novogranatense, both native to South America, are the main commercial source of cocaine and of the mild stimulant coca tea. Another species, Erythroxylum vaccinifolium is used as an aphrodisiac in Brazilian drinks and herbal medicine.
Banksia spinulosa, the hairpin banksia, is a species of woody shrub, of the genus Banksia in the family Proteaceae, native to eastern Australia. Widely distributed, it is found as an understorey plant in open dry forest or heathland from Victoria to northern Queensland, generally on sandstone though sometimes also clay soils. It generally grows as a small shrub to 2 metres (7 ft) in height, though can be a straggly tree to 6 metres (20 ft). It has long narrow leaves with inflorescences which can vary considerably in coloration; while the spikes are gold or less commonly yellowish, the emergent styles may be a wide range of colours – from black, purple, red, orange or yellow.
Rosa chinensis, known commonly as the China rose, Chinese rose, or Bengal rose, is a member of the genus Rosa native to Southwest China in Guizhou, Hubei, and Sichuan Provinces. The first publication of Rosa chinensis was in 1768 by Nikolaus Joseph von Jacquin in Observationum Botanicarum, 3, p. 7 & plate 55.
PlowmanianthusFaden & C.R.Hardy is a genus of plants with 5 species and 2 subspecies in the family Commelinaceae. The genus is distributed from Panama to Amazonian Peru and Brazil.
Ypadú or ypadu is an unrefined, unconcentrated powder made from toasted coca leaves and the ash of various other plants. It is traditionally prepared and consumed by indigenous tribes in the Northwest Amazon. Like coca teas consumed in Peru to adapt to sickness induced by high elevation, it has a long ethnobotanical history and cultural associations.
Tropane alkaloids are a class of bicyclic [3.2.1] alkaloids and secondary metabolites that contain a tropane ring in their chemical structure. Tropane alkaloids occur naturally in many members of the plant family Solanaceae. Certain tropane alkaloids such as cocaine and scopolamine are notorious for their psychoactive effects, related usage and cultural associations. Particular tropane alkaloids such as these have pharmacological properties and can act as anticholinergics or stimulants.
Erythroxylum novogranatense is a neotropical species of Erythroxylum (Erythroxylaceae). Cocaine is produced from the leaves.
Haworthia truncata, locally known as horse's teeth, is a species of succulent plant in the genus Haworthia. It is found in the Little Karoo region, in the far east of the Western Cape Province, South Africa.
Timothy Charles Plowman was an ethnobotanist best known for his intensive work over the course of 15 years on the genus Erythroxylum in general, and the cultivated coca species in particular. He collected more than 700 specimens from South America, housed in the collection of the Field Museum of Natural History. The standard author abbreviation Plowman is used to indicate this person as the author when citing a botanical name.
Coca flour is made from whole ground dried coca leaves harvested from the coca plant, Erythroxylum coca or Erythroxylum novogranatense. Coca flour is commercially produced and sold in stores in Argentina, Bolivia, Colombia and Peru.
Plowmania is a monotypic genus of flowering plants belonging to the family Solanaceae. The only species is Plowmania nyctaginoides.
