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Aextoxicaceae
''Aextoxicon punctatum'', the sole species of genus ''Aextoxicon'' and family Aextoxicaceae, is a dioecious tree native to southern Chile and Argentina. Commonly known as the ''olivillo'' or ''aceitunillo'', it is a large evergreen tree native to the forests of the Valdivian temperate rain forests and Magellanic subpolar forests of southern Chile's Pacific coast, where it forms is a canopy tree in the broadleaf forests. It can reach 15 m tall. The APG system (1998) and the APG II system (2003) left the family Aextoxicaceae unplaced in the core eudicots. It has since been included in the order Berberidopsidales. The genus was formerly often included in the family Euphorbiaceae. Description ''Aextoxicon punctatum'' is a large tree often found in the canopy or emergent. It has opposite leaves with dark green coloration on the top and lighter green below, and is covered in rusty peltate scales. The flowers are actinomorphic and unisexual, in hanging racemes. The flowers have 5 sepals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berberidopsidales
Berberidopsidales is an order of Southern Hemisphere woody flowering plants. The name is newly accepted in the APG III system of plant taxonomy. APG II system, of 2003, mentions the possibility of recognizing the order, as comprising the families Berberidopsidaceae and Aextoxicaceae. However, APG II left the families unplaced as to order, assigning them to the clade core eudicots. The APG III system of 2009 formally recognized the order. The family Aextoxicaceae is a monotypic family native to Chile; Berberidopsidaceae is a family of 2 genera and 3 species native to Chile and eastern Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma .... References Angiosperm orders {{eudicot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APG System
The APG system (Angiosperm Phylogeny Group system) of plant classification is the first version of a modern, mostly molecular-based, system of plant taxonomy. Published in 1998 by the Angiosperm Phylogeny Group, it was replaced by the improved APG II in 2003, APG III system in 2009 and APG IV system in 2016. History The original APG system is unusual in being based, not on total evidence, but on the cladistic analysis of the DNA sequences of three genes, two chloroplast genes and one gene coding for ribosomes. Although based on molecular evidence only, its constituent groups prove to be supported by other evidence as well, for example pollen morphology supports the split between the eudicots and the rest of the former dicotyledons. The system is rather controversial in its decisions at the family level, splitting a number of long-established families and submerging some other families. It also is unusual in not using botanical names above the level of order, that is, an orde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APG II System
The APG II system (Angiosperm Phylogeny Group II system) of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Group.Angiosperm Phylogeny Group (2003)An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II.''Botanical Journal of the Linnean Society'' 141(4): 399-436. doi: 10.1046/j.1095-8339.2003.t01-1-00158.x It was a revision of the first APG system, published in 1998, and was superseded in 2009 by a further revision, the APG III system. History APG II was published as: *Angiosperm Phylogeny Group (2003). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". ''Botanical Journal of the Linnean Society'' 141(4): 399-436. (Available onlineAbstractFull text (HTML)Full text (PDF) doi: 10.1046/j.1095-8339.2003.t01-1-00158.x) Each o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinomorphic
Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirally arranged. Actinomorphic Most flowers are actinomorphic ("star shaped", "radial"), meaning they can be divided into 3 or more identical sectors which are related to each other by rotation about the center of the flower. Typically, each sector might contain one tepal or one petal and one sepal and so on. It may or may not be possible to divide the flower into symmetrical halves by the same number of longitudinal planes passing through the axis: Oleander is an example of a flower without such mirror planes. Actinomorphic flowers are also called radially symmetrical or regular flowers. Other examples of actinomorphic flowers are the lily (''Lilium'', Liliaceae) and the buttercup (''Ranunculus'', Ranunculaceae). Zygomorphic Zygomorp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lago Puelo National Park
The Lago Puelo National Park ( es, Parque Nacional Lago Puelo) is a national park of Argentina, located in the northwest of the province of Chubut, in the Patagonia region of South America. It has an area of . It was created to protect its scenic landscape and the Valdivian flora to augment that of the nearby Los Alerces National Park. Originally an annex to Los Alerces, it was declared a National Park and independent reserve in 1971. The protected area is named after the Puelo Lake, and belongs to the Patagonic forest and steppes and High Andes eco-regions. The mountainous zone where the park lies was modified by the action of glaciers, which created many rivers and lakes, including Puelo Lake the namesake of the park. The rivers of the region have high levels of glacier sediment (silt), which gives Puelo Lake its blue color. Climate The climate is cold and wet, although more temperate than other parks in the Patagonian region. Mean temperatures range from in winter to in s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choele Choel
Choele Choel is the capital of the Departments of Argentina, department of Avellaneda Department, Río Negro, Avellaneda in the Argentina, Argentine provinces of Argentina, province of Río Negro Province, Río Negro, and the most important settlement within the ''Valle Medio'' ("Middle Valley") agricultural area of the Río Negro (Argentina), Río Negro River in Patagonia. Overview Choele Choel is located at the intersection of National Routes #22 and #250, around 1000 kilometres from Buenos Aires, 180 from General Roca, 193 from the Las Grutas beach resort, and 460 from Puerto Madryn. It has a population of 10,642 (). Its long distance bus terminal is a common stop for buses going to both sea-side Patagonia (Puerto Madryn, Río Gallegos, Ushuaia) and Andes, North-Andean Patagonia (Bariloche, El Bolsón, Río Negro, El Bolsón). During the 1990s, the airport used to serve regular flights to Buenos Aires, but currently serves only infrequent private charters. History Originally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Río Negro (Argentina)
Río Negro (; ''Black River'') is the main river of Patagonia in terms of the size of its drainage basin, its associated agricultural produce and population living at its shores. In eastern Patagonia it is also the largest by flow rate. The river flows through the Argentine province of Río Negro which is named after it. Its name comes from the literal translation of the Mapuche term ''Curu Leuvu'', although the water is more green than black. Formerly, it was also known as "river of the willows" because of the big number of weeping willows that grow along the bank. It is 635 km in length. It originates from the junction of the Limay River and Neuquén River at the border with the Neuquén Province, and flows southeast incised through steppes to the Atlantic Ocean at , near El Cóndor beach resort some downstream from Viedma, Río Negro province's capital. The river allows the Río Negro province to produce 70% of the pears and 72% the apples of Argentina. The main area o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiloé Archipelago
The Chiloé Archipelago ( es, Archipiélago de Chiloé, , ) is a group of islands lying off the coast of Chile, in the Los Lagos Region. It is separated from mainland Chile by the Chacao Channel in the north, the Sea of Chiloé in the east and the Gulf of Corcovado in the southeast. All islands except the Desertores Islands form Chiloé Province. The main island is Chiloé Island. Of roughly rectangular shape, the southwestern half of this island is a wilderness of contiguous forests, wetlands and, in some places, mountains. The landscape of the northeastern sectors of Chiloé Island and the islands to the east is dominated by rolling hills, with a mosaic of pastures, forests and cultivated fields. The archipelago is known within Chile for its distinctive folklore, mythology, potatoes, cuisine and unique architecture. The culture of Chiloé is the result of mixing of Huilliche, Spanish and Chono influences in centuries of isolation without much contact with the rest of Chile o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bosque De Fray Jorge National Park
A bosque ( ) is a type of gallery forest habitat found along the riparian flood plains of stream and river banks in the southwestern United States. It derives its name from the Spanish word for 'woodlands'. Setting In the predominantly arid or semi-arid southwestern United States, a bosque is an oasis-like ribbon of green vegetation, often canopied, that only exists near rivers, streams, or other water courses. The most notable bosque is the -long ecosystem along the valley of the middle Rio Grande in New Mexico that extends from Santa Fe south to El Paso, Texas. One of the most famous and ecologically intact sections of the bosque is included in the Bosque del Apache National Wildlife Refuge. Flora and fauna Common trees in the bosque habitat include mesquite, cottonwood, desert willow, and desert olive. Because there is often only a single canopy layer and because the tree species found in the bosque are generally deciduous, a wide variety of shrubs, grasses, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drupe
In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part (exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or '' pyrena'') of hardened endocarp with a seed (''kernel'') inside. These fruits usually develop from a single carpel, and mostly from flowers with superior ovaries (polypyrenous drupes are exceptions). The definitive characteristic of a drupe is that the hard, lignified stone is derived from the ovary wall of the flower. In an aggregate fruit, which is composed of small, individual drupes (such as a raspberry), each individual is termed a drupelet, and may together form an aggregate fruit. Such fruits are often termed ''berries'', although botanists use a different definition of ''berry''. Other fleshy fruits may have a stony enclosure that comes from the seed coat surrounding the seed, but such fruits are not drupes. Flowering plants that produce drupes include coffee, jujube, mango, oli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fruit
In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in particular have long propagated using the movements of humans and animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; in fact, humans and many animals have become dependent on fruits as a source of food. Consequently, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate) have acquired extensive cultural and symbolic meanings. In common language usage, "fruit" normally means the seed-associated fleshy structures (or produce) of plants that typically are sweet or sour and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. In botanical usage, the term "fruit" also i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpels
Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' and is typically surrounded by the pollen-producing reproductive organs, the stamens, collectively called the androecium. The gynoecium is often referred to as the "female" portion of the flower, although rather than directly producing female gametes (i.e. egg cells), the gynoecium produces megaspores, each of which develops into a female gametophyte which then produces egg cells. The term gynoecium is also used by botanists to refer to a cluster of archegonia and any associated modified leaves or stems present on a gametophyte shoot in mosses, liverworts, and hornworts. The corresponding terms for the male parts of those plants are clusters of antheridia within the androecium. Flowers that bear a gynoecium but no stamens are called ''pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
