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Lignum Vitae
Lignum vitae (), also called guayacan or guaiacum, and in parts of Europe known as Pockholz or pokhout, is a wood from trees of the genus '' Guaiacum''. The trees are indigenous to the Caribbean and the northern coast of South America (e.g., Colombia and Venezuela) and have been an important export crop to Europe since the beginning of the 16th century. The wood was once very important for applications requiring a material with its extraordinary combination of strength, toughness, and density. It is also the national tree of the Bahamas, and the Jamaican national flower. The wood is obtained chiefly from '' Guaiacum officinale'' and '' Guaiacum sanctum'', both small, slow-growing trees. All species of the genus ''Guaiacum'' are now listed in Appendix II of CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora) as potentially endangered species. ''G. sanctum'' is listed as Near Threatened by the IUCN Red List. Demand for the wood has been re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Polymer
A polymer () is a chemical substance, substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeat unit, repeating subunits derived from one or more species of monomers. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function. Polymers, both natural and synthetic, are created via polymerization of many small molecules, known as monomers. Their consequently large molecular mass, relative to small molecule compound (chemistry), compounds, produces unique physical property, physical properties including toughness, high rubber elasticity, elasticity, viscoelasticity, and a tendency to form Amorphous solid, amorphous and crystallization of polymers, semicrystalline structures rath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Eucalyptus
''Eucalyptus'' () is a genus of more than 700 species of flowering plants in the family Myrtaceae. Most species of ''Eucalyptus'' are trees, often Mallee (habit), mallees, and a few are shrubs. Along with several other genera in the tribe Eucalypteae, including ''Corymbia'' and ''Angophora'', they are commonly known as eucalypts or "gum trees". Plants in the genus ''Eucalyptus'' have bark that is either smooth, fibrous, hard, or stringy and leaves that have oil Gland (botany), glands. The sepals and petals are fused to form a "cap" or Operculum (botany), operculum over the stamens, hence the name from Greek ''eû'' ("well") and ''kaluptós'' ("covered"). The fruit is a woody Capsule (botany), capsule commonly referred to as a "gumnut". Most species of ''Eucalyptus'' are Indigenous (ecology), native to Australia, and every state and territory has representative species. About three-quarters of Australian forests are eucalypt forests. Many eucalypt species have adapted to wildfire, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Acacia
''Acacia'', commonly known as wattles or acacias, is a genus of about of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa, South America, and Australasia, but is now reserved for species mainly from Australia, with others from New Guinea, Southeast Asia, and the Indian Ocean. The genus name is Neo-Latin, borrowed from Koine Greek (), a term used in antiquity to describe a preparation extracted from '' Vachellia nilotica'', the original type species. Several species of ''Acacia'' have been introduced to various parts of the world, and two million hectares of commercial plantations have been established. Description Plants in the genus ''Acacia'' are shrubs or trees with bipinnate leaves, the mature leaves sometimes reduced to phyllodes or rarely absent. There are 2 small stipules at the base of the leaf, but sometimes fall off as the leaf matures. The flowers are borne in spik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Vitex Lignum-vitae
''Vitex lignum-vitae'', known in Australia as yellow hollywood or " lignum-vitae" (also used for other species), is a rainforest tree of eastern Australia. The natural range of distribution is in dry, sub-tropical or tropical rainforest from the Richmond River, New South Wales to Cape York Peninsula at the northernmost tip of Australia. It also occurs in New Guinea. ''Lignum vitae'' is Latin for "wood of life". Description ''Vitex lignum-vitae'' is a small to medium tree growing to a height of 30 metres (98.4 ft) and a trunk diameter of 90 cm (2.95 ft). The trunk is creamy or brown, with horizontal lines and fissures. Its bark sheds in small flakes. Flanged or buttressed at the base of larger trees, the bole is irregular in shape. Juvenile and coppice leaves are lobed or angled. Mature leaves opposite, simple, shiny and not toothed. The leaves are 5 to 13 cm long, and often broader towards the tip. The leaf stalks are 15 to 25 mm long, hairy and channeled on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Australasia
Australasia is a subregion of Oceania, comprising Australia, New Zealand (overlapping with Polynesia), and sometimes including New Guinea and surrounding islands (overlapping with Melanesia). The term is used in a number of different contexts, including geopolitically, physiogeographically, philologically, and ecologically, where the term covers several slightly different but related regions. Derivation and definitions Charles de Brosses coined the term (as French ''Australasie'') in ''Histoire des navigations aux terres australes'' (1756). He derived it from the Latin for "south of Asia" and differentiated the area from Polynesia (to the east) and the southeast Pacific ( Magellanica). In the late 19th century, the term Australasia was used in reference to the "Australasian colonies". In this sense it related specifically to the British colonies south of Asia: New South Wales, Queensland, South Australia, Tasmania, Western Australia, Victoria (i.e., the Australian colon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Plectrocarpa Sarmientoi
''Plectrocarpa'' is a genus of flowering plants belonging to the family Zygophyllaceae. Its native range is Colombia to Venezuela, Bolivia to Western Central Brazil and Northern Argentina. Species: *''Plectrocarpa arborea'' *''Plectrocarpa bonariensis'' *''Plectrocarpa carrapo'' *''Plectrocarpa rougesii'' *''Plectrocarpa sarmientoi'' *''Plectrocarpa tetracantha'' References * * {{Taxonbar, from=Q9061045 Zygophyllaceae Zygophyllales genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Argentina
Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the List of countries and dependencies by area, eighth-largest country in the world. Argentina shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a Federation, federal state subdivided into twenty-three Provinces of Argentina, provinces, and one autonomous city, which is the federal capital and List of cities in Argentina by population, largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a Federalism, federal system. Argentina claims sovereignty ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Bulnesia
''Bulnesia'' is a genus of flowering plants in the caltrop family, Zygophyllaceae. Species in this genus are all native to South America. The wood of some – particularly ''Bulnesia arborea, B. arborea'' and ''Bulnesia sarmientoi, B. sarmientoi'' – is traded as verawood (colloquially "vera") or ''"lignum vitae"''. They are close relatives of the "true" ''lignum vitae'' trees of genus ''Guaiacum''. Species * ''Bulnesia arborea'' – Maracaibo ''lignum vitae''; 'True' Verawood * ''Bulnesia bonariensis'' August Grisebach, Griseb. * ''Bulnesia carrapo'' Ellsworth Paine Killip, Killip & Armando Dugand, Dugand * ''Bulnesia chilensis'' Claude Gay, Gay * ''Bulnesia foliosa'' Griseb. * ''Bulnesia loraniensis'' Griseb. * ''Bulnesia macrocarpa'' Rodolfo Armando Philippi, Phil. * ''Bulnesia rivas-martinezii'' G.Navarro * ''Bulnesia retama'' (Gillies ex William Jackson Hooker, Hook. & George Arnott Walker-Arnott, Arn.) Griseb * ''Bulnesia sarmientoi'' – Argentine ''lignum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Larreoideae
Larreoideae is a subfamily of the flowering plant family Zygophyllaceae. Genera * ''Bulnesia'' Gay * ''Guaiacum'' L. * ''Larrea'' Cav. * '' Pintoa'' Gay * ''Porlieria'' Ruiz The Spanish surname Ruiz is a patronymic from the personal name Ruy, a short form of Rodrigo, meaning "son of Roderick". Roderick's roots can be traced back to the Visigoths, the Germanic tribe which ruled in the Iberian Peninsula between the 5th an ... & Pav. References Rosid subfamilies {{rosid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Bulnesia Sarmientoi
''Bulnesia'' is a genus of flowering plants in the caltrop family, Zygophyllaceae. Species in this genus are all native to South America. The wood of some – particularly '' B. arborea'' and '' B. sarmientoi'' – is traded as verawood (colloquially "vera") or ''"lignum vitae"''. They are close relatives of the "true" ''lignum vitae'' trees of genus ''Guaiacum''. Species * '' Bulnesia arborea'' – Maracaibo ''lignum vitae''; 'True' Verawood * '' Bulnesia bonariensis'' Griseb. * '' Bulnesia carrapo'' Killip & Dugand * '' Bulnesia chilensis'' Gay * '' Bulnesia foliosa'' Griseb. * '' Bulnesia loraniensis'' Griseb. * '' Bulnesia macrocarpa'' Phil. * '' Bulnesia rivas-martinezii'' G.Navarro * '' Bulnesia retama'' (Gillies ex Hook. & Arn. George Arnott Walker Arnott of Arlary (6 February 1799 – 17 April 1868) was a Scottish botanist. He collaborated with botanists from around the world and served as a regius professor of botany at the University of Glasgow. An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
