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Canterbury Bells
''Campanula medium'', common name Canterbury bells, is an annual or biennial flowering plant of the genus ''Campanula'', belonging to the family Campanulaceae. In floriography, it represents gratitude, or faith and constancy. Etymology The specific epithet ''medium'' means that this plant has intermediate characteristics in respect of other species of the genus ''Campanula''. In Persian, it is called () meaning "glass flower", because the flower resembles a drinking glass. Description ''Campanula medium'' reaches approximately in height. This biennial herbaceous plant forms rosettes of leaves in the first year, stems and flowers in the second one. The stem is erect, robust, reddish-brown and bristly hairy. The basal leaves are stalked and lanceolate to elliptical and long with serrated leaf edge. The upper leaves are smaller, lanceolate and sessile, almost embracing the stem. The flowers are arranged in a racemose inflorescence of extremely long-lasting blooms. These at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloxinia Perennis
''Gloxinia perennis'' is a species of tropical rhizomatous herbaceous flowering plant belonging to the family Gesneriaceae. It is sometimes known as "Canterbury bells" (not to be confused with members of the genus '' Campanula'', which go by the same name). Etymology The genus name commemorate Benjamin Peter Gloxin (1765-1795), a German physician and botanical writer. The species epithet ''perennis,'' meaning "perennial," was meant to distinguish it from the annual ''Martynia annua'', as the species was first placed in the genus ''Martynia''. Description ''Gloxinia perennis'' has a raceme-like flowering stem. The flowers are showy, bell-shaped, nodding, pale purple or violet-lavender, mint-scented, about 4 cm long. The stem is erect, glabrous and reaches a height of about 60–120 cm. The leaves are opposite, glabrous and veined. The flowering period extended from mid Summer until early Fall. Fruits are ovoid to elliptical capsules, containing numerous minute seeds. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermaphroditic (botany)
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 process involved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Letitia Elizabeth Landon
Letitia Elizabeth Landon (14 August 1802 – 15 October 1838) was an English poet and novelist, better known by her initials L.E.L. The writings of Landon are transitional between Romanticism and the Victorian Age. Her first major breakthrough came with ''The Improvisatrice'' and thence she developed the metrical romance towards the Victorian ideal of the Victorian monologue, casting her influence on Elizabeth Barrett Browning, Robert Browning and Christina Rossetti. Her influence can also be found in Alfred Tennyson and in America, where she was very popular. Poe regarded her genius as self-evident. In spite of these wide influences, due to the perceived immorality of Landon's lifestyle, her works were more or less deliberately suppressed and misrepresented after her death. Early life Letitia Elizabeth Landon was born on 14 August 1802 in Chelsea, London to John Landon and Catherine Jane, ''née'' Bishop.Byron (2004). A precocious child, Landon learned to read as a toddler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louisa Sharpe
Louisa Sharpe (1798 – 28 January 1843) was a British miniature painter who was one of four gifted sisters Life Sharpe was born in Birmingham to Sussanna (born Fairhead?) and an engraver named William Sharpe and she was baptised on 21 August 1798 at St Phillip's church. She had three sisters, Eliza Sharpe, Charlotte Sharpe and Mary Ann Sharpe who all became artists. The parents allowed Louisa and the other daughters to travel to the continent to inspect galleries in France and Germany and each of the daughters was taught to engrave. William and Sussanna moved the Sharpe family to London in 1816. Whilst she was a child she was painted with her sister Eliza by George Henry Harlow. Sharpe was said to be the most talented of the four female artists in the family. She had nearly thirty paintings accepted at the Royal Academy starting in 1817. From 1829 Sharpe was elected to the (old) Watercolour Society. She created sentimental and commercial images including poets and people ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poems Of Letitia Elizabeth Landon (L
Poetry (derived from the Greek ''poiesis'', "making"), also called verse, is a form of literature that uses aesthetic and often rhythmic qualities of language − such as phonaesthetics, sound symbolism, and metre − to evoke meanings in addition to, or in place of, a prosaic ostensible meaning. A poem is a literary composition, written by a poet, using this principle. Poetry has a long and varied history, evolving differentially across the globe. It dates back at least to prehistoric times with hunting poetry in Africa and to panegyric and elegiac court poetry of the empires of the Nile, Niger, and Volta River valleys. Some of the earliest written poetry in Africa occurs among the Pyramid Texts written during the 25th century BCE. The earliest surviving Western Asian epic poetry, the ''Epic of Gilgamesh'', was written in Sumerian. Early poems in the Eurasian continent evolved from folk songs such as the Chinese ''Shijing'', as well as religious hymns (the Sanskrit ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project Gutenberg
Project Gutenberg (PG) is a Virtual volunteering, volunteer effort to digitize and archive cultural works, as well as to "encourage the creation and distribution of eBooks." It was founded in 1971 by American writer Michael S. Hart and is the oldest digital library. Most of the items in its collection are the full texts of books or individual stories in the public domain. All files can be accessed for free under an open format layout, available on almost any computer. , Project Gutenberg had reached 50,000 items in its collection of free eBooks. The releases are available in Text file, plain text as well as other formats, such as HTML, PDF, EPUB, Mobipocket, MOBI, and Plucker wherever possible. Most releases are in the English language, but many non-English works are also available. There are multiple affiliated projects that provide additional content, including region- and language-specific works. Project Gutenberg is closely affiliated with Distributed Proofreaders, an Inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivar
A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, or carefully controlled seed production. Most cultivars arise from purposeful human manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants that share the unique characteristics that define the cultivar. was coined as a term meaning "cultivated variety ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia and it is located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. Comprising the westernmost peninsulas of Eurasia, it shares the continental landmass of Afro-Eurasia with both Africa and Asia. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south and Asia to the east. Europe is commonly considered to be Boundaries between the continents of Earth#Asia and Europe, separated from Asia by the drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the waterways of the Turkish Straits. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entomogamy
Entomophily or insect pollination is a form of pollination whereby pollen of plants, especially but not only of flowering plants, is distributed by insects. Flowers pollinated by insects typically advertising in biology, advertise themselves with bright colours, sometimes with conspicuous patterns (honey guides) leading to rewards of pollen and nectar; they may also have an attractive scent which in some cases mimicry, mimics insect pheromones. Insect pollinators such as bees have adaptations for their role, such as lapping or sucking mouthparts to take in nectar, and in some species also pollen baskets on their hind legs. This required the coevolution of insects and flowering plants in the development of pollination behaviour by the insects and pollination mechanisms by the flowers, benefiting both groups. Coevolution History The early spermatophytes (seed plants) were largely dependent on the Wind pollination, wind to carry their pollen from one plant to another. Prior to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autogamy
Autogamy, or self-fertilization, refers to the fusion of two gametes that come from one individual. Autogamy is predominantly observed in the form of self-pollination, a reproductive mechanism employed by many flowering plants. However, species of protists have also been observed using autogamy as a means of reproduction. Flowering plants engage in autogamy regularly, while the protists that engage in autogamy only do so in stressful environments. Occurrence Protists ''Paramecium aurelia'' ''Paramecium aurelia'' is the most commonly studied protozoan for autogamy. Similar to other unicellular organisms, ''Paramecium aurelia'' typically reproduce asexually via binary fission or sexually via cross-fertilization. However, studies have shown that when put under nutritional stress, ''Paramecium aurelia'' will undergo meiosis and subsequent fusion of gametic-like nuclei. This process, defined as hemixis, a chromosomal rearrangement process, takes place in a number of steps. First, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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