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Hypericum Assamicum
''Hypericum assamicum'' is a species of flowering plant in the St. John's wort family, Hypericaceae. It is endemic to India. ''Hypericum assamicum'' is one of two species of ''Hypericum'' in the section ''Hypericum'' sect. ''Sampsonia''. Description ''Hypericum assamicum'' is an erect, perennial or suffruticose (woody at the base) herb tall. The stems are terete with internodes , shorter than or exceeding the leaves. The oblong to oblanceolate leaves are perfoliate, in pairs, thinly papery, up to long and broad, with glaucous undersides and obtuse to rounded tips. The margin of the leaf is entire, or rarely glandular-crenate, with dense, black glands. The leaves have broadly cuneate or rounded leaf bases. The flowerheads produce 12–18 flowers in corymbiform or subpyramidal branching patterns. Each flower is approximately with 5 sepals, 5 yellowish petals, and approximately 15 stamens. The cylindric to subglobose fruiting capsules reach in length with reddish-brown seeds, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samarendra Nath Biswas
Samarendra Nath Biswas (1 May 1926 – 4 January 2005) was an Indian theoretical physicist specialized in theoretical high energy physics, particle physics and mathematical physics and is known for his work in several diverse areas. Life, education and career Samarendra Nath Biswas (1 May 1926 – 4 January 2005) was born in the undivided Bengal now part of Bangladesh and had his education there till the graduate level graduating from Pabna Edward college. He obtained his DPhil degree (1951) from the University of Calcutta and PhD degree (under the supervision of Herbert S. Green) (1958) from the University of Adelaide, Australia. He worked in theoretical physics, specializing in elementary particle physics. He was a Fellow at the Tata Institute of Fundamental Research, Mumbai (1958–64). Professor of Physics, Centre for Advanced Study in Physics, Department of Physics and Astrophysics, University of Delhi (1969–91), during which he also headed the Department for a period o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericaceae
Hypericaceae is a plant family in the order Malpighiales, comprising six to nine genera and up to 700 species, and commonly known as the St. John's wort family. Members are found throughout the world apart from extremely cold or dry habitats. ''Hypericum'' and ''Triadenum'' occur in temperate regions but other genera are mostly tropical. Characteristics Members of this family are annual or perennial herbs, subshrubs or shrubs. The leaves are simple and entire, in opposite pairs; they are sometimes dotted with black or translucent glandular spots. The inflorescence consists of a branched, flat-topped cluster, each flower being radially symmetrical, with a superior ovary. Flowers have the following components: sepals, four or five, which tend to persist; petals four or five, usually yellow, sometimes dotted with black specks; stamens many, on long filaments; styles, three to five, often fused at the base. The fruit has a dehiscent capsule which splits open when ripe to release th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum
''Hypericum'' is a genus of flowering plants in the family Hypericaceae (formerly considered a subfamily of Clusiaceae). The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar regions. Many ''Hypericum'' species are regarded as invasive species and noxious weeds. All members of the genus may be referred to as St. John's wort, and some are known as goatweed. The white or pink flowered marsh St. John's worts of North America and eastern Asia are generally accepted as belonging to the separate genus ''Triadenum'' Raf. ''Hypericum'' is unusual for a genus of its size because a worldwide taxonomic monograph was produced for it by Norman Robson (working at the Natural History Museum, London). Robson recognizes 36 sections within ''Hypericum''. Description ''Hypericum'' species are quite variable in habit, occurring as trees, shrubs, annuals, and perennials. Trees in the sense of single stemmed woody plants are rare, as most woody s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Section (biology)
In biology a section ( la, sectio) is a taxonomic rank that is applied differently in botany and zoology. In botany Within flora (plants), 'section' refers to a ''botanical'' rank below the genus, but above the species: * Domain > Kingdom > Division > Class > Order > Family > Tribe > Genus > Subgenus > Section > Subsection > Species In zoology Within fauna (animals), 'section' refers to a ''zoological'' rank below the order, but above the family: * Domain > Kingdom > Phylum > Class > Order > Section > Family > Tribe > Genus > Species In bacteriology The International Code of Nomenclature for Bacteria The International Code of Nomenclature of Prokaryotes (ICNP) formerly the International Code of Nomenclature of Bacteria (ICNB) or Bacteriological Code (BC) governs the scientific names for Bacteria and Archaea.P. H. A. Sneath, 2003. A short histor ... states that the Section rank is an informal one, between the subgenus and species (as in botany). References Botanical no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum Sect
''Hypericum'' is a genus of flowering plants in the family Hypericaceae (formerly considered a subfamily of Clusiaceae). The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar regions. Many ''Hypericum'' species are regarded as invasive species and noxious weeds. All members of the genus may be referred to as St. John's wort, and some are known as goatweed. The white or pink flowered marsh St. John's worts of North America and eastern Asia are generally accepted as belonging to the separate genus ''Triadenum'' Raf. ''Hypericum'' is unusual for a genus of its size because a worldwide taxonomic monograph was produced for it by Norman Robson (working at the Natural History Museum, London). Robson recognizes 36 sections within ''Hypericum''. Description ''Hypericum'' species are quite variable in habit, occurring as trees, shrubs, annuals, and perennials. Trees in the sense of single stemmed woody plants are rare, as most woody spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corymbiform
Corymb is a botanical term for an inflorescence with the flowers growing in such a fashion that the outermost are borne on longer pedicels than the inner, bringing all flowers up to a common level. A corymb has a flattish top with a superficial resemblance towards an umbel, and may have a branching structure similar to a panicle. Flowers in a corymb structure can either be parallel, or alternate, and form in either a convex, or flat form. Many species in the Maloideae, such as hawthorns and rowans, produce their flowers in corymbs. The Norway maple and yerba maté are also examples of corymbs. The word ''corymb'' is derived from the Ancient Greek word ''korymbos'' meaning "bunch of flowers or fruit". Image:Schirmtraube (inflorescence).svg, Racemose corymb Image:Schleifenblume06.jpg, ''Iberis umbellata'' or candytuft (racemose corymb) Image:Schirmrispe (inflorescence).svg, Cymose corymb Image:Sambucus nigra 003.jpg, ''Sambucus nigra ''Sambucus nigra'' is a species complex ... [...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] |
Nagaon
Nagaon (previously Nowgong; Assamese নগাঁও), is a town and a municipal board in Nagaon district in the Indian state of Assam. It is situated east of Guwahati. History This division was organised on the both banks of Kalang river by Momai Tamuli Borbarua in 1611 during the reign of Pratap Singha. Its settlement was completed during the reign of Gadadhar Singha. Nagoan was under the administration of the Borphukan. From Nagoan 1,310 soldiers took part in the Kachari invasion of Swargadeo Rudra Singha in 1707 Geography The Kolong River, a tributary of the Brahmaputra River, flows through Nagaon and in the process divides the city into two distinct regions: Nagaon and Haibargaon. Nagaon is bounded on the north by the Sonitpur district and the Brahmaputra River. On the south, it borders the West Karbi Anglong district, Dima Hasao and Hojai District. On the east it is bounded by East Karbi Anglong district and the Golaghat district, while on the west it neighbours the Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assam
Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur to the east; Meghalaya, Tripura, Mizoram and Bangladesh to the south; and West Bengal to the west via the Siliguri Corridor, a wide strip of land that connects the state to the rest of India. Assamese and Boro are the official languages of Assam, while Bengali is an additional official language in the Barak Valley. Assam is known for Assam tea and Assam silk. The state was the first site for oil drilling in Asia. Assam is home to the one-horned Indian rhinoceros, along with the wild water buffalo, pygmy hog, tiger and various species of Asiatic birds, and provides one of the last wild habitats for the Asian elephant. The Assamese economy is aided by wildlife tourism to Kaziranga National Park and Manas National Park, which are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum Sampsonii
''Hypericum sampsonii'' is a species of flowering plant in the St. John's wort family, Hypericaceae. It occurs in China, Taiwan, Japan, Myanmar, and Vietnam. It is one of two species of ''Hypericum'' in the section ''Hypericum'' sect. ''Sampsonia''. Description ''Hypericum sampsonii'' is a perennial herb tall with perfoliate leaves. The thick, papery leaves are lanceolate to oblanceolate, long and across, with pale undersides and dense pale or black glandular dots. The flat-topped flowerhead has between 20 and 40 flowers, each flower in diameter with 5 bright yellow petals. Each petal is long and across with pale glandular streaks or dots on the surface and black glands along the edges. Each flower has 30–42 stamens, 3 styles, and 3-parted capsules. The ovoid to pyramidal capsules reach in length and across with amber-colored vesicular glands scattered on the valves. The orange-brown seeds are approximately long. ''Hypericum sampsonii'' flowers between May and July and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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