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Ilex Guayusa
''Ilex guayusa'' ( or ) is a species of tree of the holly genus, native to the Amazon Rainforest. One of four known caffeinated holly trees, the leaves of the guayusa tree are harvested fresh and brewed like a tea for their stimulative effects. It is known simply as ''guayusa'' in western languages like Spanish, as ''waisa'' in Kichwa language, Kichwa and as ''wayus'' or ''wais'' in Shuar language, Shuar. Description ''Ilex guayusa'' is an evergreen dioecious tree which grows tall. The leaves are Glossary of leaf morphology, ovate, elliptic, oblong or lanceolate; long, wide; with serrate or dentate margin. The flowers are small and white, arranged in thyrses. The fruit is spherical and red, in diameter. Distribution and habitat ''I. guayusa'' is native to the upper Amazonian regions of Ecuador, Peru, and southern Colombia, between of elevation. However, it has also been collected in Bolivia in 1939. It is present in evergreen or deciduous premontane forests, especially on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Eduard Theodor Loesener
Ludwig Eduard Theodor Lösener (23 November 1865 – 2 June 1941) was a German botanist who collected widely in the field in Germany: Amrum island (1912), the Alps, the Black Forest, Bavaria, Rügen island and Tyrol in modern Austria. His speciality was the Aquifoliaceae of the world. He also studied cultivars of ''Ilex'' species. His name is usually spelled as 'Loesener' in English sources. In 1941, botanist Albert Charles Smith published the genus '' Loeseneriella'', in the family Celastraceae, in his honour. The standard author abbreviation Loes. is used to indicate this person as the authority when citing a botanical name. The International Plant Names Index lists more than 1800 taxa In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and ... attributed to him. Works * * References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictyocaryum
''Dictyocaryum'' is a genus of monoecious flowering plants in the palm family found in South America. It is closely related to the genus ''Iriartea''; they are commonly called araque or palma real. As many as eleven species have been described but this number is reduced to three in most current accounts. The genus name translates from two Greek words meaning "net" and "nut", describing the thick network of raphe fibers around the seed.Riffle, Robert L. and Craft, Paul (2003) ''An Encyclopedia of Cultivated Palms''. Portland: Timber Press. / Description ''Dictyocaryum'' palms are usually solitary in nature though '' D. ptarianum'' will occasionally cluster in habitat. All three plants have conical masses of stilt roots at the base which are armed with spines. These stilt roots, in the case of '' D. fuscum'', can be up to four inches (ten centimeters) thick. The trunks are conspicuously ringed by leaf scars, to 30 cm wide, and in '' D. lamarckianum'' reach over 20 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society Of Jesus
The Society of Jesus (; abbreviation: S.J. or SJ), also known as the Jesuit Order or the Jesuits ( ; ), is a religious order of clerics regular of pontifical right for men in the Catholic Church headquartered in Rome. It was founded in 1540 by Ignatius of Loyola and six companions, with the approval of Pope Paul III. The Society of Jesus is the largest religious order in the Catholic Church and has played significant role in education, charity, humanitarian acts and global policies. The Society of Jesus is engaged in evangelization and apostolic ministry in 112 countries. Jesuits work in education, research, and cultural pursuits. They also conduct retreats, minister in hospitals and parishes, sponsor direct social and humanitarian works, and promote ecumenical dialogue. The Society of Jesus is consecrated under the patronage of Madonna della Strada, a title of the Blessed Virgin Mary, and it is led by a superior general. The headquarters of the society, its general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jivaroan Peoples
The Jivaroan peoples are the indigenous peoples in the headwaters of the Marañon River and its tributaries, in northern Peru and eastern Ecuador. The tribes speak the Chicham languages. Their traditional way of life relies on gardening, and on hunting with blowguns and darts poisoned with curare. Complex spiritual beliefs are built around both of these activities. Jivaroan culture also features headhunting raids and ayahuasca ceremonies. In the 16th century, Jivaroan warriors stopped the expansion of the Inca Empire into the Amazon basin, and destroyed settlements of Spanish conquistadors. Etymology The word ''Jivaro'' is likely a corruption of xivar, a word that means ''people'' in the Shuar Chicham language. During the Spanish colonial period, "Jivaros" were viewed as the antithesis of civilized. The word Jíbaro thus entered the Spanish language; in Ecuador it is highly pejorative and signifies "savage"; outside of Ecuador, especially in Mexico and Jíbaro in Puerto Ric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andes
The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long and wide (widest between 18th parallel south, 18°S and 20th parallel south, 20°S latitude) and has an average height of about . The Andes extend from south to north through seven South American countries: Argentina, Chile, Bolivia, Peru, Ecuador, Colombia, and Venezuela. Along their length, the Andes are split into several ranges, separated by intermediate depression (geology), depressions. The Andes are the location of several high plateaus—some of which host major cities such as Quito, Bogotá, Cali, Arequipa, Medellín, Bucaramanga, Sucre, Mérida, Mérida, Mérida, El Alto, and La Paz. The Altiplano, Altiplano Plateau is the world's second highest after the Tibetan Plateau. These ranges are in turn grouped into three majo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Understory
In forestry and ecology, understory (American English), or understorey (English in the Commonwealth of Nations, Commonwealth English), also known as underbrush or undergrowth, includes plant life growing beneath the Canopy (biology), forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy, so understory vegetation is generally Shade tolerance, shade-tolerant. The understory typically consists of trees stunted through lack of light, other small trees with low light requirements, saplings, shrubs, vines, and undergrowth. Small trees such as holly and Cornus (genus), dogwood are understory specialists. In Temperate broadleaf and mixed forest, temperate deciduous forests, many understory plants start into growth earlier in the year than the canopy trees, to make use of the greater availability of light at that particular time of year. A gap in the canopy caused by the death of a tree stimulates the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basal Shoot
Basal shoots, root sprouts, adventitious shoots, and suckers are words for various kinds of shoots that grow from adventitious buds on the base of a tree or shrub, or from adventitious buds on its roots. Shoots that grow from buds on the base of a tree or shrub are called basal shoots; these are distinguished from shoots that grow from adventitious buds on the roots of a tree or shrub, which may be called root sprouts or suckers. A plant that produces root sprouts or Stolon, runners is described as surculose. Water sprouts produced by adventitious buds may occur on the above-ground stem, branches or both of trees and shrubs. Suckers are shoots arising underground from the roots some distance from the base of a tree or shrub. __TOC__ In botany and ecology In botany, a root sprout or sucker is a severable plant that grows not from a seed but from the meristem of a root at the base of or a certain distance from the original tree or shrub. Root sprouts may emerge a substantial distan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Reproductive Morphology
Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction. Among all living organisms, flowers, which are the reproductive structures of angiosperms, are the most varied physically and show a correspondingly great diversity in methods of reproduction. Plants that are not flowering plants ( green algae, mosses, liverworts, hornworts, ferns and gymnosperms such as conifers) also have complex interplays between morphological adaptation and environmental factors in their sexual reproduction. The breeding system, or how the sperm from one plant fertilizes the ovum of another, depends on the reproductive morphology, and is the single most important determinant of the genetic structure of nonclonal plant populations. Christian Konrad Sprengel (1793) studied the reproduction of flowering plants and for the first time it was understood that the pollination proce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cation-exchange Capacity
Cation-exchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces. Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water. This is one of the ways that solid materials in soil alter the chemistry of the soil. CEC affects many aspects of soil chemistry, and is used as a measure of soil fertility, as it indicates the capacity of the soil to retain several nutrients (e.g. K+, NH4+, Ca2+) in plant-available form. It also indicates the capacity to retain pollutant cations (e.g. Pb2+). Definition and principles Cation-exchange capacity is defined as the amount of positive charge that can be exchanged per mass of soil, usually measured in cmolc/kg. Some texts use the older, equivalent units me/100g or meq/100g. CEC is measured in moles of electric charge, so a cation-exchange capacity of 10 cmolc/kg co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loam
Loam (in geology and soil science) is soil composed mostly of sand (particle size > ), silt (particle size > ), and a smaller amount of clay (particle size < ). By weight, its mineral composition is about 40–40–20% concentration of sand–silt–clay, respectively. These proportions can vary to a degree, however, and result in different types of loam soils: sandy loam, silty loam, clay loam, sandy clay loam, silty clay loam, and loam. In the USDA, United States Department of Agriculture, soil texture, textural classification triangle, the only soil that is not predominantly sand, silt, or clay is called "loam". Loam soils generally contain more nutrients, moisture, and humus than sandy soils, have better drainage and infiltration of water and air than silt- and clay-rich soils, and are easier to tillage, till than clay soils. In fact, the primary definition of loam in most dictionaries is soils containing hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photo Of Ilex Guayusa Tree
A photograph (also known as a photo, or more generically referred to as an ''image'' or ''picture'') is an image created by light falling on a photosensitive surface, usually photographic film or an electronic image sensor. The process and practice of creating such images is called photography. Most photographs are now created using a smartphone or camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would perceive. Etymology The word ''photograph'' was coined in 1839 by Sir John Herschel and is based on the Greek φῶς (''phos''), meaning "light", and γραφή (''graphê''), meaning "drawing, writing", together meaning "drawing with light". History The first permanent photograph, a contact-exposed copy of an engraving, was made in 1822 using the bitumen-based "heliography" process developed by Nicéphore Niépce. The first photographs of a real-world scene, made using a camera obscura, followed a few years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pastaza Province
Pastaza () is a Provinces of Ecuador, province in the Oriente (Ecuador), Oriente of Ecuador located in the eastern jungle. The capital is Puyo, Ecuador, Puyo, founded on May 12, 1899, with a population of 33,325. The city is now accessible by paved roads, a recent development; the main road from Baños de Agua Santa, Baños follows the Pastaza river into the province. The Pastaza River surges into the province from the west and as the landscape flattens, meanders on to the Napo, a tributary of the Amazon. Natural resources of Pastaza are bananas, grapefruit, tobacco, cocoa and coffee. Tea has successfully been cultivated by a few British companies, and in the mid-1980s one of the companies was honored by a visit from Princess Margaret from the royal family of Britain. The landscape is mostly mountainous in the western part of the province and becomes relatively flat toward the east as it nears the Peruvian border with rivers and plains characterizing most of the province. The high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
