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Petunia Exserta
''Petunia exserta'' is a rare member of the genus ''Petunia'', endemic to the Serras de Sudeste in southern Brazil. First described in 1987, only fourteen plants were found in the wild during an expedition in 2007. In the wild, the plant is found growing only in shaded cracks on sandstone towers. It is the only ''Petunia'' species that is naturally pollinated by hummingbirds, and the only red flowered ''Petunia'' species. Description ''Petunia exserta'' has a bright red corolla with distinctive exserted stamens and Stigma (botany), stigma, the latter which are typically associated with hummingbird pollination. It shares the erect habit, and similar corolla, pollen, and stalk attributes of ''Petunia axillaris'' and ''Petunia secreta''. The flowers have no fragrance, which is not necessary for attracting hummingbirds, who have little sense of smell. The red color is due to several anthocyanin pigments, which are different from the cause of red color in modern hybrid petunias. Threa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
João Renato Stehmann
João is the Portuguese language, Portuguese equivalent of the given name John (given name), John. The diminutive is Joãozinho (other), Joãozinho and the Feminine (grammar), feminine is Joana. It is widespread in Portuguese-speaking countries. Notable people with the name are enumerated in the sections below. Kings * João I of Kongo, ruled 1470–1509 * João II of Lemba or João Manuel II of Kongo, ruled 1680–1716 * Dharmapala of Kotte, last King of the Kingdom of Kotte, reigned 1551–1597 Princes * João Manuel, Hereditary Prince of Portugal (1537–1554), son of John III of Portugal, John III * Infante João, Duke of Beja (1842–1861) Arts and literature * João Bosco, Brazilian musician * João Cabral de Melo Neto, Brazilian poet and diplomat * Joao Constancia, Filipino singer, actor and dancer * João Donato, Brazilian musician * João de Deus de Nogueira Ramos, Portuguese poet * João Gilberto, Brazilian musician * João Guimarães Rosa, Brazilian novelis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petunia
''Petunia'' is genus of 20 species of flowering plants of South American origin. The popular flower of the same name derived its epithet from the French, which took the word ''petun'', meaning "tobacco," from a Tupi–Guarani language. A tender perennial, most of the varieties seen in gardens are hybrids ( ''Petunia'' × ''atkinsiana'', also known as ''Petunia'' × ''hybrida''). Taxonomy ''Petunia'' is a genus in the family Solanaceae, subfamily Petunioideae. Well known members of Solanaceae in other subfamilies include tobacco (subfamily Nicotianoideae), and the cape gooseberry, tomato, potato, deadly nightshade and chili pepper (subfamily Solanoideae). Some botanists place the plants of the genus '' Calibrachoa'' in the genus ''Petunia'', but this is not accepted by others. ''Petchoa'' is a hybrid genus derived from crossing ''Calibrachoa'' and ''Petunia''. Species Species include: Ecology Petunias are generally insect pollinated, with the exception of '' P. exserta'', w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serras De Sudeste
Serras de Sudeste (English: ''Southeastern Mountain Ranges'') is a dissected plateau, also named Planalto Dissecado de Sudeste (''Southeastern Dissected Plateau'') or Escudo Sul-Rio-Grandense (''Shield of Rio Grande do Sul''), located in the southeastern portion of Rio Grande do Sul state in southernmost Brazil, near Uruguay. Geography Topography This plateau has hills and hillocks covered by grasslands, known as ''coxilhas'' (''cuchillas'' in Spanish), whose highest levels do not exceed 600 metres (1,970 feet) in altitude. This plateau was formed in Precambrian time, divided by the Camaquã River in two main units, ''Serra de Herval'' and ''Serra dos Tapes''. This region has a triangular area between the cities of Porto Alegre, Jaguarão and Dom Pedrito, approximately. It is an old plateau, whose tabular relief is preserved only in areas between some rivers. There are three municipalities, in this region, whose their urban areas are situated above 400 metres (1,312 feet) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 States of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament and an anther which contains ''sporangium, microsporangia''. Most commonly anthers are two-lobed and are attached to the filament either at the base or in the middle area of the anther. The sterile tissue between the lobes is called the connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther. A pollen grain develops from a microspore in the microsporangium and contains the male gametophyte. The stamens in a flower are collectively called the androecium. The androecium can consist of as few as one-half stamen (i.e. a single locule) as in ''Canna (plant), Canna'' species or as many as 3,482 stamens which have been counted in the saguaro (''Carnegiea gigantea'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stigma (botany)
The stigma () is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of , the cells of which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings. The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals ( biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and sle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petunia Axillaris
''Petunia axillaris'', the large white petunia, wild white petunia or white moon petunia, is an annual herbaceous plant in the family Solanaceae, genus ''Petunia''. It is native to temperate South America. The plant's flowers, the only white ones found in the ''Petunia'' genus, are 3 to 7 cm long. The commonly-grown garden petunia is a hybrid of ''P. axillaris'' and '' P. integrifolia''. Subspecies ''P. axillaris'' has three subspecies: '' P. a. axillaris'', '' P. a. parodii'', and '' P. a. subandina''. ''P. a. axillaris'' and ''P. a. parodii'' are found in the flat parts of the Pampas, while ''P. a. subandina'' is found in the highlands near the Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S .... References axillaris {{Solanales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petunia Secreta
''Petunia'' is genus of 20 species of flowering plants of South American origin. The popular flower of the same name derived its epithet from the French, which took the word ''petun'', meaning "tobacco," from a Tupi–Guarani language. A tender perennial, most of the varieties seen in gardens are hybrids ( ''Petunia'' × ''atkinsiana'', also known as ''Petunia'' × ''hybrida''). Taxonomy ''Petunia'' is a genus in the family Solanaceae, subfamily Petunioideae. Well known members of Solanaceae in other subfamilies include tobacco (subfamily Nicotianoideae), and the cape gooseberry, tomato, potato, deadly nightshade and chili pepper (subfamily Solanoideae). Some botanists place the plants of the genus ''Calibrachoa'' in the genus ''Petunia'', but this is not accepted by others. ''Petchoa'' is a hybrid genus derived from crossing ''Calibrachoa'' and ''Petunia''. Species Species include: Ecology Petunias are generally insect pollinated, with the exception of '' P. exserta'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthocyanin
Anthocyanins (), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart gave the name Anthokyan to a chemical compound that gives flowers a blue color for the first time in his treatise "''Die Farben der Blüthen''". Food plants rich in anthocyanins include the blueberry, raspberry, black rice, and black soybean, among many others that are red, blue, purple, or black. Some of the colors of autumn leaves are derived from anthocyanins. Anthocyanins belong to a parent class of molecules called flavonoids synthesized via the phenylpropanoid pathway. They occur in all tissues of higher plants, including leaves, stems, roots, flowers, and fruits. Anthocyanins are derived from anthocyanidins by adding sugars. They are odorless and moderately astringent. Although approved as food and beverage colorant in the European Union, anthocyanins are not approved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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