Quillaja | |
---|---|
Quillaja saponaria | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fabales |
Family: | Quillajaceae |
Genus: | Quillaja Molina |
Species | |
See text | |
Distribution of the Quillajaceae | |
Synonyms | |
Fontenellea A.St.-Hil. & Tul. |
Quillaja is a genus of flowering plants, the only extant genus in the family Quillajaceae with two or three known species. [1] It was once thought to be in the rose family, Rosaceae, [2] but recent research shows it belongs in its own family. The inner bark of the soap bark tree ( Q. saponaria ) contains saponin, which is a natural soap. Members of this genus are trees that grow to about 25 metres (82 ft).
The species were revised by Federico Luebert in 2014: [3]
Image | Name | Distribution |
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Quillaja brasiliensis (A.St.-Hil. & Tul.) Mart. | Brazil | |
Quillaja saponaria Molina | central Chile in the forests of La Campana National Park and Cerro La Campana | |
Fabales is an order of flowering plants included in the rosid group of the eudicots in the Angiosperm Phylogeny Group II classification system. In the APG II circumscription, this order includes the families Fabaceae or legumes, Quillajaceae, Polygalaceae or milkworts, and Surianaceae. Under the Cronquist system and some other plant classification systems, the order Fabales contains only the family Fabaceae. In the classification system of Dahlgren the Fabales were in the superorder Fabiflorae with three families corresponding to the subfamilies of Fabaceae in APG II. The other families treated in the Fabales by the APG II classification were placed in separate orders by Cronquist, the Polygalaceae within its own order, the Polygalales, and the Quillajaceae and Surianaceae within the Rosales.
Meliaceae, the mahogany family, is a flowering plant family of mostly trees and shrubs in the order Sapindales.
Cinchona is a genus of flowering plants in the family Rubiaceae containing at least 23 species of trees and shrubs. All are native to the tropical Andean forests of western South America. A few species are reportedly naturalized in Central America, Jamaica, French Polynesia, Sulawesi, Saint Helena in the South Atlantic, and São Tomé and Príncipe off the coast of tropical Africa, and others have been cultivated in India and Java, where they have formed hybrids.
The Casuarinaceae are a family of dicotyledonous flowering plants placed in the order Fagales, consisting of four genera and 91 species of trees and shrubs native to eastern Africa, Australia, Southeast Asia, Malesia, Papuasia, and the Pacific Islands. At one time, all species were placed in the genus Casuarina. Lawrence Alexander Sidney Johnson separated out many of those species and renamed them into the new genera of Gymnostoma in 1980 and 1982, Allocasuarina in 1982, and Ceuthostoma in 1988, with some additional formal descriptions of new species in each other genus. At the time, it was somewhat controversial. The monophyly of these genera was later supported in a 2003 phylogenetic study of the family. In the Wettstein system, this family was the only one placed in the order Verticillatae. Likewise, in the Engler, Cronquist, and Kubitzki systems, the Casuarinaceae were the only family placed in the order Casuarinales.
The Ulmaceae are a family of flowering plants that includes the elms, and the zelkovas. Members of the family are widely distributed throughout the north temperate zone, and have a scattered distribution elsewhere except for Australasia.
Saponins are bitter-tasting usually toxic plant-derived secondary metabolites, being organic chemicals, that have a foamy quality when agitated in water and a high molecular weight. They are present in a wide range of plant species throughout the bark, leaves, stems, roots and flowers but found particularly in soapwort, a flowering plant, the soapbark tree, common corn-cockle, baby's breath and soybeans. They are used in soaps, medicines, fire extinguishers, as dietary supplements, for synthesis of steroids, and in carbonated beverages. Saponins are both water and fat soluble, which gives them their useful soap properties. Some examples of these chemicals are glycyrrhizin and quillaia, a bark extract used in beverages.
Alstroemeriaceae is a family of flowering plants, with 254 known species in four genera, almost entirely native to the Americas, from Central America to southern South America. One species of Luzuriaga occurs in New Zealand, and the genus Drymophila is endemic to south-eastern Australia.
The Oxalidaceae, or wood sorrel family, are a small family of five genera of herbaceous plants, shrubs and small trees, with the great majority of the 570 species in the genus Oxalis. Members of this family typically have divided leaves, the leaflets showing "sleep movements", spreading open in light and closing in darkness.
The Crypteroniaceae are a family of flowering trees and shrubs. The family includes 13 species in three genera, native to Indomalaya.
QS-21 is a purified plant extract used as a vaccine adjuvant. It is derived from the soap bark tree, which is native to the countries of Chile, Peru, and Bolivia. The crude drug is imported from Peru and Chile.
Quillaja saponaria, the soap bark tree or soapbark, is an evergreen tree in the family Quillajaceae, native to warm temperate central Chile. In Chile it occurs from 32 to 40° South Latitude approximately and at up to 2000 m (6500 ft) above sea level. It can grow to 15–20 m (50–65 ft) in height. The tree has thick, dark bark; smooth, leathery, shiny, oval evergreen leaves 3–5 cm long; white star-shaped flowers 15 mm diameter borne in dense corymbs; and a dry fruit with five follicles each containing 10–20 seeds. The tree has several practical and commercial uses.
Myricaceae is a small family of dicotyledonous shrubs and small trees in the order Fagales with its type genus Myrica, the sweet gales. There are three genera in the family, although some botanists separate many species from Myrica into a fourth genus Morella. About 55 species are usually accepted in Myrica, one in Canacomyrica, and one in Comptonia.
Costaceae, known as the Costus family or spiral gingers, is a family of pantropical monocots. It belongs to the order Zingiberales, which contains horticulturally and economically important plants such as the banana (Musaceae), bird-of-paradise (Strelitziaceae), and edible ginger (Zingiberaceae). The seven genera in Costaceae together contain about 143 known species. They are native to tropical climates of Asia, Africa, Central America, and South America. Several species are frequently found in cultivation.
Lardizabalaceae is a family of flowering plants.
Euptelea is a genus of two species of flowering plants in the monogeneric family Eupteleaceae. The genus is found from Assam east through China to Japan, and consists of shrubs or small trees:
Pandanaceae is a family of flowering plants native to the tropics and subtropics of the Old World, from West Africa to the Pacific. It contains 982 known species in five genera, of which the type genus, Pandanus, is the most important, with species like Pandanus amaryllifolius and karuka being important sources of food. The family likely originated during the Late Cretaceous.
Staphyleaceae is a small family of flowering plants in the order Crossosomatales, native to Europe, temperate and tropical Asia and the Americas. The largest genus Staphylea, which gives the family its name, contains the "bladdernut" trees. The family includes three genera with more than 40 known species.
The Surianaceae are a family of plants in the order Fabales with five genera and eight known species. It has an unusual distribution: the genus Recchia is native to Mexico, and the sole member of Suriana, S. maritima, is a coastal plant with a pantropical distribution; and the remaining three genera are endemic to Australia.
Stachyurus is the only genus in the flowering plant family Stachyuraceae, native to the Himalayas and eastern Asia. They are deciduous shrubs or small trees with pendent racemes of 4-petalled flowers which appear on the bare branches before the leaves. The plants have leaves with serrate margins.
Kewa is a genus of flowering plants, consisting of eight species of succulent sub-woody plants, native to eastern and southern Africa, including Saint Helena and Madagascar. These are small shrubs or herbs that form cushions and have edible, acid-tasting leaves. Kewa is the only genus in the family Kewaceae.