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Crown Shyness
Crown shyness (also ''canopy disengagement'', ''canopy shyness'', or ''inter-crown spacing'') is a phenomenon observed in some tree species, in which the crowns of fully stocked trees do not touch each other, forming a canopy with channel-like gaps. The phenomenon is most prevalent among trees of the same species, but also occurs between trees of different species. There exist many hypotheses as to why crown shyness is an adaptive behavior, and research suggests that it might inhibit spread of leaf-eating insect larvae. Possible physiological explanations The exact physiological basis of crown shyness is not certain. The phenomenon has been discussed in scientific literature since the 1920s. The variety of hypotheses and experimental results might suggest that there are multiple mechanisms across different species, an example of convergent evolution. Some hypotheses contend that the interdigitation of canopy branches leads to “reciprocal pruning” of adjacent trees. Tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryobalanops Aromatica Canopy
''Dryobalanops'' is a genus of flowering plants and the genus of family Dipterocarpaceae. The name ''Dryobalanops'' is derived from Greek (''dryas'' = a nymph associated with oaks and ''balanops'' = acorn) and describes the acorn-like nut. The genus has seven species, confined to the tropical forests of West Malesia (Sumatra, Peninsular Malaysia and Borneo). It is among the most abundant species of emergent trees in these forests, growing up to 80 m tall. The genus is of considerable importance as timber trees and sold under the trade name Kapur. The timber is an important heavy and durable construction timber. ''D. aromatica'' was an important source of camphor. As the trees mature, they mutually avoid touching each other in a phenomenon known as crown shyness. See also * Kapur (wood) Kapur (or Kapor) is a dipterocarp hardwood from trees of the genus ''Dryobalanops'' found in lowland tropical rainforests of Malaysia, Indonesia and South-East Asia.< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis S
Francis may refer to: People *Pope Francis, the head of the Catholic Church and sovereign of the Vatican City State and Bishop of Rome *Francis (given name), including a list of people and fictional characters *Francis (surname) Places *Rural Municipality of Francis No. 127, Saskatchewan, Canada *Francis, Saskatchewan, Canada **Francis (electoral district) *Francis, Nebraska *Francis Township, Holt County, Nebraska *Francis, Oklahoma * Francis, Utah Other uses * ''Francis'' (film), the first of a series of comedies featuring Francis the Talking Mule, voiced by Chill Wills *''Francis'', a 1983 play by Julian Mitchell *FRANCIS, a bibliographic database * ''Francis'' (1793), a colonial schooner in Australia *Francis turbine, a type of water turbine *Francis (band), a Sweden-based folk band * Francis, a character played by YouTuber Boogie2988 See also *Saint Francis (other) *Francies, a surname, including a list of people with the name *Francisco (other) * Francisc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterocymbium Beccarii
''Pterocymbium'' is a genus in the family Malvaceae: in the subfamily Sterculioideae and previously placed in the Sterculiaceae. In Indonesia, ''P. tinctorium'' (''Kelumbuk'') is a significant timber tree. Species ''Plants of the World Online'' currently (2019) lists the following accepted species: * '' Pterocymbium beccarii'' K.Schum. - New Guinea * '' Pterocymbium dongnaiense'' Pierre - Laos and Vietnam§ * '' Pterocymbium dussaudii'' Tardieu - Laos * '' Pterocymbium macranthum'' Kosterm. - Thailand and Myanmar * '' Pterocymbium micranthum'' Mildbr. - Bismarck Archipelago * '' Pterocymbium oceanicum'' A.C.Sm. - Fiji * '' Pterocymbium parviflorum'' Merr. - Borneo * '' Pterocymbium splendens'' Kosterm. - Borneo * '' Pterocymbium stipitatum'' C.T.White & W.D.Francis n- New Guinea * '' Pterocymbium tinctorium'' (Blanco) Merr. – Indo-China, Malesia (including Philippines) * '' Pterocymbium tubulatum'' (Mast.) Pierre – Peninsular Malaysia * '' Pterocymbium viridiflorum'' Teijsm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celtis Spinosa
''Celtis spinosa'' is a species of flowering plant in the family Cannabaceae Cannabaceae is a small family of flowering plants, known as the hemp family. As now circumscribed, the family includes about 170 species grouped in about 11 genera, including ''Cannabis'' (hemp), '' Humulus'' (hops) and '' Celtis'' (hackberries ..., native to seasonally dry tropical South America. It is a shrub typically tall, with yellowish-green flowers. References spinosa Flora of Venezuela Flora of West-Central Brazil Flora of Northeast Brazil Flora of Southeast Brazil Flora of South Brazil Flora of Paraguay Flora of Northeast Argentina Flora of Northwest Argentina Flora of Uruguay Plants described in 1824 {{Rosales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clusia Alata
''Clusia alata'' is a species of flowering plant in the family Clusiaceae The Clusiaceae or Guttiferae Juss. (1789) (''nom. alt. et cons.'' = alternative and valid name) are a family (biology), family of plants including 13 genera and ca 750 species. Several former members of Clusiacae are now placed in Calophyllaceae .... Leaves are distinctly obovate. Flowers are cream colored and 5-petaled. Found in Ecuador, Colombia, Peru, and Venezuela, generally at elevations between 2000 and 2500 m. Notes {{Taxonbar, from=Q15388552 alata Trees of Peru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schefflera
''Schefflera'' is a genus of flowering plants in the family Araliaceae. With an estimated 600–900 species, the genus represents about half of its family. The plants are trees, shrubs or lianas, growing tall, with woody stems, the absence of articulated pedicels and armaments, and palmately compound leaves. Several species are grown in pots as houseplants, most commonly '' Schefflera actinophylla'' (umbrella tree) and '' Schefflera arboricola'' (dwarf umbrella tree). Numerous cultivars have been selected for various characters, most popularly for variegated or purple foliage. ''Schefflera'' species are used as food plants by the larvae of some Lepidopteran species including '' Batrachedra arenosella'' (recorded on ''S. stellata''). '' Schefflera arboricola'' and '' Schefflera actinophylla'' can be used to attract birds. The genus is named in honor of Johann Peter Ernst von Scheffler (born in 1739), physician and botanist of Gdańsk, and later of Warsaw, who contributed plants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avicennia Germinans
''Avicennia germinans'', the black mangrove, is a shrub or small tree growing up to 12 meters (39 feet) in the acanthus family, Acanthaceae. It grows in tropical and subtropical regions of the Americas, on both the Atlantic and Pacific Coasts, and on the Atlantic Coast of tropical Africa, where it thrives on the sandy and muddy shores where seawater reaches. It is common throughout coastal areas of Texas and Florida, and ranges as far north as southern Louisiana and coastal Georgia in the United States. Like many other mangrove species, it reproduces by vivipary. Seeds are encased in a fruit, which reveals the germinated seedling when it falls into the water. Unlike other mangrove species, it does not grow on prop roots, but possesses pneumatophores that allow its roots to breathe even when submerged. It is a hardy species and expels absorbed salt mainly from its leathery leaves. The name "black mangrove" refers to the color of the trunk and heartwood. The leaves often ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Contorta
''Pinus contorta'', with the common names lodgepole pine and shore pine, and also known as twisted pine, and contorta pine, is a common tree in western North America. It is common near the ocean shore and in dry montane forests to the subalpine, but is rare in lowland rain forests. Like all pines (member species of the genus ''Pinus''), it is an evergreen conifer. Description Depending on subspecies, ''Pinus contorta'' grows as an evergreen shrub or tree. The shrub form is krummholz and is approximately high. The thin and narrow-crowned tree can grow high and achieve up to in diameter at chest height. The ''murrayana'' subspecies is the tallest. The crown is rounded and the top of the tree is flattened. In dense forests, the tree has a slim, conical crown. The formation of twin trees is common in some populations in British Columbia. The elastic branches stand upright or overhang and are difficult to break. The branches are covered with short shoots that are easy to remov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalypt
Eucalypt is a descriptive name for woody plants with capsule fruiting bodies belonging to seven closely related genera (of the tribe Eucalypteae) found across Australasia: ''Eucalyptus'', ''Corymbia'', ''Angophora'', '' Stockwellia'', ''Allosyncarpia'', '' Eucalyptopsis'' and ''Arillastrum''. Taxonomy For an example of changing historical perspectives, in 1991, largely genetic evidence indicated that some prominent ''Eucalyptus'' species were actually more closely related to ''Angophora'' than to other eucalypts; they were accordingly split off into the new genus ''Corymbia''. Although separate, all of these genera and their species are allied and it remains the standard to refer to the members of all seven genera ''Angophora'', ''Corymbia'', ''Eucalyptus'', ''Stockwellia'', ''Allosyncarpia'', ''Eucalyptopsis'' and ''Arillastrum'' as "eucalypts" or as the eucalypt group. The extant genera ''Stockwellia'', ''Allosyncarpia'', ''Eucalyptopsis'' and ''Arillastrum'' comprise six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryobalanops Lanceolata
''Dryobalanops lanceolata'' is a species of plant in the family Dipterocarpaceae. The species name is derived from Latin (' = shaped like the head of a spear) and refers to the shape of the leaf. This species is endemic to Borneo. It is common in protected areas, although elsewhere it has suffered modest population decline due to logging and land conversion. It is an immense emergent tree, up to 80 m tall, found in mixed dipterocarp forest Dipterocarpaceae is a family of 16 genera and about 695 known species of mainly tropical lowland rainforest trees. The family name, from the type genus ''Dipterocarpus'', is derived from Greek (''di'' = two, ''pteron'' = wing and ''karpos'' = fru ... on clay-rich soils. It is a heavy hardwood sold under the timber trade name kapur. References lanceolata Endemic flora of Borneo Trees of Borneo Taxa named by William Burck {{Dipterocarpaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryobalanops
''Dryobalanops'' is a genus of flowering plants and the genus of family Dipterocarpaceae. The name ''Dryobalanops'' is derived from Greek (''dryas'' = a nymph associated with oaks and ''balanops'' = acorn) and describes the acorn-like nut. The genus has seven species, confined to the tropical forests of West Malesia (Sumatra, Peninsular Malaysia and Borneo). It is among the most abundant species of emergent trees in these forests, growing up to 80 m tall. The genus is of considerable importance as timber trees and sold under the trade name Kapur. The timber is an important heavy and durable construction timber. ''D. aromatica'' was an important source of camphor. As the trees mature, they mutually avoid touching each other in a phenomenon known as crown shyness. See also * Kapur (wood) Kapur (or Kapor) is a dipterocarp hardwood from trees of the genus ''Dryobalanops'' found in lowland tropical rainforests of Malaysia, Indonesia and South-East Asia.< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabidopsis Thaliana
''Arabidopsis thaliana'', the thale cress, mouse-ear cress or arabidopsis, is a small flowering plant native to Eurasia and Africa. ''A. thaliana'' is considered a weed; it is found along the shoulders of roads and in disturbed land. A winter annual with a relatively short lifecycle, ''A. thaliana'' is a popular model organism in plant biology and genetics. For a complex multicellular eukaryote, ''A. thaliana'' has a relatively small genome around 135 megabase pairs. It was the first plant to have its genome sequenced, and is a popular tool for understanding the molecular biology of many plant traits, including flower development and light sensing. Description ''Arabidopsis thaliana'' is an annual (rarely biennial) plant, usually growing to 20–25 cm tall. The leaves form a rosette at the base of the plant, with a few leaves also on the flowering stem. The basal leaves are green to slightly purplish in color, 1.5–5 cm long, and 2–10 mm broad, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
