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Cecropia
''Cecropia'' is a Neotropical genus consisting of 61 recognized species with a highly distinctive lineage of dioecious trees. The genus consists of pioneer trees in the more or less humid parts of the Neotropics, with the majority of the species being myrmecophytic.Berg, Rosselli & Davidson (2005) Berg and Rosselli state that the genus is characterized by some unusual traits: spathes fully enclosing the flower-bearing parts of the inflorescences until anthesis, patches of dense indumentums (trichilia) producing Mullerian (food) at the base of the petiole, and anthers becoming detached at anthesis. ''Cecropia'' is most studied for its ecological role and association with ants. Its classification is controversial; in the past, it has been placed in the Cecropiaceae, Moraceae (the mulberry family), or Urticaceae (the nettle family).Burger (1977) The modern Angiosperm Phylogeny Group system places the "cecropiacean" group in the Urticaceae. The genus is native to the American tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cecropia Glaziovii
''Cecropia'' is a Neotropical genus consisting of 61 recognized species with a highly distinctive lineage of dioecious trees. The genus consists of pioneer trees in the more or less humid parts of the Neotropics, with the majority of the species being myrmecophyte, myrmecophytic.Berg, Rosselli & Davidson (2005) Berg and Rosselli state that the genus is characterized by some unusual traits: spathes fully enclosing the flower-bearing parts of the inflorescences until anthesis, patches of dense indumentums (trichilia) producing Mullerian (food) at the base of the Petiole (botany), petiole, and anthers becoming detached at anthesis. ''Cecropia'' is most studied for its ecological role and association with ants. Its classification is controversial; in the past, it has been placed in the Cecropiaceae, Moraceae (the mulberry family), or Urticaceae (the nettle family).Burger (1977) The modern Angiosperm Phylogeny Group system places the "cecropiacean" group in the Urticaceae. The genu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cecropia Peltata
''Cecropia peltata'' is a fast-growing tree in the genus ''Cecropia''. Common names include trumpet tree, trumpet-bush, bacano and snakewood. It is listed as one of the world's 100 worst invasive alien species. Description ''Cecropia peltata'' is a fast-growing tree, normally reaching , but occasionally growing up to tall. The leaves are large – in length and width, but more commonly about 20 × and palmately divided into 7–11 (but generally 8–10) lobed. The upper surfaces of the leaves are scaled, while the lower surfaces are covered with minute hair, interspersed with longer ones. The petioles are generally long, while the branches are green and covered with short, stiff hairs. Like other members of the genus, ''C. peltata'' is dioecious – there are separate male and female plants. Male flowers, which are long, are borne in spikes long. The male inflorescence is enclosed in a spathe which splits open and drops off once the anthers mature. The female flowers are b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cecrops I
Cecrops (; grc, Κέκροψ, ''Kékrops''; ''gen''.: Κέκροπος) was a mythical king of Attica which derived from him its name Cecropia, having previously borne the name of Acte or Actice (from Actaeus). He was the founder and the first king of Athens itself though preceded in the region by the earth-born king Actaeus of Attica. Cecrops was a culture hero, teaching the Athenians marriage, reading and writing, and ceremonial burial. Etymology and form The name of Cecrops is not of Greek origin according to Strabo. It was said that he was born from the earth itself (an autochthon) and was accordingly called a γηγενής (''gēgenḗs'' "native"), and described as having his top half shaped like a man and the bottom half in serpent or fish-tail form. Hence he was called διφυής (''diphuḗs'', "of two natures"). Diodorus rationalized that his double form was because of his double citizenship, Greek and barbarian. Some ancients referred the epithet διφυής to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Müllerian Body
{{Disambiguation ...
Müllerian may refer to: *Müllerian mimicry, a type of mimicry or convergence named after Fritz Müller *Müllerian ducts, which enter the cloaca of an embryo (named after Johannes Peter Müller) * Mullerian anomalies are structural anomalies caused by errors in embryonic müllerian duct development *Mixed Müllerian tumor A malignant mixed Müllerian tumor, also known as malignant mixed mesodermal tumor (MMMT) is a cancer found in the uterus, the ovaries, the fallopian tubes and other parts of the body that contains both carcinomatous ( epithelial tissue) and sarc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pearl Bodies
A pearl is a hard, glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as fossil conulariids. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite) in minute crystalline form, which has deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. The finest quality of natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Because of this, ''pearl'' has become a metaphor for something rare, fine, admirable and valuable. The most valuable pearls occur spontaneously in the wild, but are extremely rare. These wild pearls are referred to as ''natural'' pearls. ''Cultured'' or ''farmed'' pearls from Pinctada, pearl oysters and freshwater mussels make up the majority of those currently sold. Imitation pearls are als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystolith
Cystolith (Gr. "cavity" and "stone") is a botanical term for outgrowths of the epidermal cell wall, usually of calcium carbonate, formed in a cellulose matrix in special cells called lithocysts, generally in the leaf of plants. Cystoliths are present in certain families, including in many genera of Acanthaceae. Plants in the family Urticaceae, known as stinging nettles, also form leaf cystoliths, but only during their later flowering and seed setting stages. Other examples include Cannabis and other plants in the family Cannabaceae, which produce leaf and flower cystoliths, and ''Ficus elastica'', the Indian rubber plant of the family Moraceae The Moraceae — often called the mulberry family or fig family — are a family of flowering plants comprising about 38 genera and over 1100 species. Most are widespread in tropical and subtropical regions, less so in temperate climates; however .... From a 1987 article on cystolith development and structure: References Cell ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichome
Trichomes (); ) are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be pubescent. Algal trichomes Certain, usually filamentous, algae have the terminal cell produced into an elongate hair-like structure called a trichome. The same term is applied to such structures in some cyanobacteria, such as '' Spirulina'' and ''Oscillatoria''. The trichomes of cyanobacteria may be unsheathed, as in ''Oscillatoria'', or sheathed, as in ''Calothrix''. These structures play an important role in preventing soil erosion, particularly in cold desert climates. The filamentous sheaths form a persistent sticky network that helps maintain soil structure. Plant trichomes Plant trichomes have many different features that vary between both species of plants an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicellular
A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms. All prokaryotes are unicellular and are classified into bacteria and archaea. Many eukaryotes are multicellular, but some are unicellular such as protozoa, unicellular algae, and unicellular fungi. Unicellular organisms are thought to be the oldest form of life, with early protocells possibly emerging 3.8–4.0 billion years ago. Although some prokaryotes live in colonies, they are not specialised cells with differing functions. These organisms live together, and each cell must carry out all life processes to survive. In contrast, even the simplest multicellular organisms have cells that depend on each other to survive. Most multicellular organisms have a unicellular life-cycle stage. Gametes, for example, are r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azteca (genus)
''Azteca'' is a strictly Neotropical genus of ants in the subfamily Dolichoderinae. The genus is very diverse and contains around 84 extant species and two fossil species. They are essentially arboreal and many species have mutualistic associations with particular plant species, where the genus ''Cecropia'' presents the most conspicuous association. In the Brazilian Amazonia, ''Azteca'' species are associated with species of ''Codonanthopsis''. Species *''Azteca adrepens'' Forel, 1911 *'' Azteca aesopus'' Forel, 1908 *'' Azteca alfari'' Emery, 1893 *†''Azteca alpha'' Wilson, 1985 *''Azteca andreae'' Guerrero, Delabie & Dejean, 2010 *'' Azteca angusticeps'' Emery, 1893 *''Azteca aragua'' Longino, 1991 *'' Azteca aurita'' Emery, 1893 *'' Azteca australis'' Wheeler, 1942 *'' Azteca barbifex'' Forel, 1906 *''Azteca beltii'' Emery, 1893 *''Azteca bequaerti'' Wheeler & Bequaert, 1929 *''Azteca brevicornis'' (Mayr, 1878) *''Azteca brevis'' Forel, 1899 *''Azteca chartifex'' Emery, 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederik Liebmann
Frederik Michael Liebmann (10 October 1813 – 29 October 1856) was a Danish botanist. Liebmann studied botany at the University of Copenhagen, although he never obtained a formal qualification. He went on study tours of Germany and Norway before becoming lecturer at the Danish Royal Veterinary School in 1837. In 1840 he travelled to Cuba and Mexico; on his return in 1845 he was appointed Professor of Botany at the University of Copenhagen. He became Director of the university's Botanical Garden in 1852, a post he held until his death four years later. He was the editor of Flora Danica and issued fasc. 41-43 (1845–1852) and Supplement vol. 1, a total of 240 plates. Legacy Liebmann is commemorated in the scientific name of a species of Mexican snake, ''Chersodromus liebmanni ''Chersodromus liebmanni'', Liebmann's earth runner, www.reptile-database.org. is a species of snake in the Family (biology), family Colubridae. The species is Endemism, endemic to Mexico. References . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Friedrich Philipp Von Martius
Carl Friedrich Philipp (Karl Friedrich Philipp) von Martius (17 April 1794 – 13 December 1868) was a German botanist and explorer. Life Martius was born at Erlangen, the son of Prof Ernst Wilhelm Martius, court apothecary. He graduated PhD from Erlangen University in 1814, publishing as his thesis a critical catalogue of plants in the university's botanical garden. After that he continued to devote himself to botanical study, and in 1817 he and Johann Baptist von Spix were sent to Brazil by Maximilian I Joseph, the king of Bavaria. They travelled from Rio de Janeiro through several of the southern and eastern provinces of Brazil and travelled up the Amazon River to Tabatinga, as well as exploring some of its larger tributaries. On his return to Europe in 1820 Martius was appointed as the keeper of the botanic garden at Munich, including the herbarium at the Munich Botanical Collection, and in 1826 as professor of botany in the university there, and he held both offices unti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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