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Rhynchostylis
''Rhynchostylis'' (abbreviated Rhy in the horticultural trade) is a genus in the orchid family (Orchidaceae), closely allied to the genus ''Vanda'' (from which it differs in the one-lobed lip of the flower) and comprising four currently accepted species native to the Indian Subcontinent, China, Indochina, Malaysia, Indonesia and the Philippines. Etymology The name consists of a compound of two Greek elements : ''rhynchos'' 'beak' and ''stylis'' 'column' – in reference to the very broad, fleshy column of the flower. Description The flowers are borne in dense racemes and are noted for their intense, spicy fragrance. Although lacking in pseudobulbs, the plants have leathery leaves that are drought-resistant. These orchids grow naturally in warm, moist, shaded tropical areas and will thrive in cultivation if given consistent warmth, uniform moisture and bright, but indirect light. Hobbyists wanting to grow them will need a warm, humid growing environment with gentle air movement. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchostylis Retusa
''Rhynchostylis retusa'' (also called foxtail orchid) is an orchid belonging to the ''Vanda'' alliance. The inflorescence is a pendant raceme, consisting of more than 100 pink-spotted white flowers. The plant has a short, stout, creeping stem carrying up to 12, curved, fleshy, deeply channeled, keeled, retuse apically leaves and blooms on an axillary pendant to long, racemose, densely flowered, cylindrical inflorescence that occurs in the winter and early spring. Distribution The plant is an epiphyte growing on tree trunks in open forests or at forest margins at elevations of . It can be found in Bhutan, Cambodia, China (Guizhou, Yunnan), India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Singapore, Sri Lanka, Thailand, and Vietnam. In India, the plant is most common in the Northeast, Odisha and Andhra Pradesh. In Andhra Pradesh, the plant is called by Telugu name Chintaranamu. Due to bio-piracy, the plant is on the verge of extinction in India. ''Rhynchostylis re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchostylis
''Rhynchostylis'' (abbreviated Rhy in the horticultural trade) is a genus in the orchid family (Orchidaceae), closely allied to the genus ''Vanda'' (from which it differs in the one-lobed lip of the flower) and comprising four currently accepted species native to the Indian Subcontinent, China, Indochina, Malaysia, Indonesia and the Philippines. Etymology The name consists of a compound of two Greek elements : ''rhynchos'' 'beak' and ''stylis'' 'column' – in reference to the very broad, fleshy column of the flower. Description The flowers are borne in dense racemes and are noted for their intense, spicy fragrance. Although lacking in pseudobulbs, the plants have leathery leaves that are drought-resistant. These orchids grow naturally in warm, moist, shaded tropical areas and will thrive in cultivation if given consistent warmth, uniform moisture and bright, but indirect light. Hobbyists wanting to grow them will need a warm, humid growing environment with gentle air movement. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanda
''Vanda'', abbreviated in the horticultural trade as ''V.,'' is a genus in the orchid family, Orchidaceae. There are 90 species, and the genus is commonly cultivated for the marketplace. This genus and its allies are considered to be among the most specifically adapted of all orchids within the Orchidaceae. The genus is highly prized in horticulture for its showy, fragrant, long-lasting, and intensely colorful flowers.The Orchids, Natural History and Classification, Robert L. Dressler. ''Vanda'' species are widespread across East Asia, Southeast Asia, and New Guinea, with a few species extending into Queensland and some of the islands of the western Pacific. Etymology The generic name ''Vanda'' is derived from the Sanskrit (वन्दाका) name for the species ''Vanda roxburghii'' (a synonym of ''Vanda tessellata''). Distribution These mostly epiphytic, but sometimes lithophytic or terrestrial orchids, are distributed in India, Himalaya, Southeast Asia, Indone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchostylis Gigantea
''Rhynchostylis gigantea'' is a species of orchid. This species was first described in 1896 by John Lindley and is native to Borneo, Myanmar, Thailand, Peninsular Malaysia, Laos, Cambodia, Vietnam, China (Hainan) and the Philippines. ''Rhynchostylis'' differs from ''Vanda'' by the one-lobed lip. ''Rhynchostylis'' are also commonly called foxtail orchids because of their long, thin, densely packed inflorescences that get up to with sweetly fragrant blooms. The inflorescences appear in autumn and winter. Due to the wide distribution of ''Rhynchostylis gigantea'', there is a range of different clones: flowers vary slightly in shape and colour (from white to dark red, with spotted forms). Unlike ''Vanda'' species, they need indirect light. ''Rhynchostylis gigantea'' are best grown in a wood-slat basket with little or no potting material and will grow massive fleshy roots entangled throughout the basket if given uniform water and fertilizer A fertilizer or fertiliser is any ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchostylis Cymifera
''Rhynchostylis cymifera'' is a species of orchid endemic to India. The specific epithet "cymifera", meaning "cyme bearing", refers to the pendent, basipetal, cymose inflorescences, which are very atypical for the genus and separates this species from others. Its morphology is very similar to '' Rhynchostylis retusa''. Flowering occurs from May to June. Conservation This species is rarely recorded (nine times to date) and is regarded as critically endangered. However an assessment by the IUCN has still not been made. Anthropogenic habitat destruction Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ... and wildfires pose a risk to the species. References cymifera Flora of India (region) Plants described in 2018 {{Vandeae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchostylis Rieferi
''Rhynchostylis rieferi'' is a species of orchid endemic to the Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot .... Its morphology is very similar to ''Rhynchostylis retusa'', however the flowers are smaller and the leaf tip forms an acute spike. The species was discovered from a cultivated plant in the United States of America. References *http://www.orchidspecies.com/rhynreiferii.htm *HIGGINS, W. E. (2012). A New Name For A Distinctive Rhynchostylis (Orchidae) And The Misapplication of ''Rhynchostylis praemorsa''. Selbyana, 31(1), 40–43. *World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew: Rhynchostylis rieferi. (2013). Retrieved March 21, 2016, from http://apps.kew.org/wcsp/namedetail.do?name_id=492854 * * rieferi {{Vandeae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanda Coelestis
''Vanda coelestis'' is a species of orchid native to Cambodia, Thailand and Vietnam. Description These epiphytic herbs form distiched, hard, deeply grooved, arching leaves that are up to 17 cm long and 2 cm wide. The branched stems can grow up to 10-25 cm tall. The 20 to 50 fragrant, white, pink or blue flowers, 2.2 cm wide, are in dense, upright racemes. The spur is flat but the distal half is curved forward.Motes, M. R. (2021). The Natural Genus Vanda. Redland Press. Cytology The chromosome count of ''Vanda coelestis'' is 2n = 38. Taxonomy The former placement of this species within ''Rhynchostylis'' has been disputed. One study identifies this species as the sister group to all other ''Rhynchostylis'' species on the basis of Amplified Fragment Length Polymorphism Amplified fragment length polymorphism (AFLP-PCR or AFLP) is a PCR-based tool used in genetics research, DNA fingerprinting, and in the practice of genetic engineering. Developed in the early 1990s by Pieter Vo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchidaceae
Orchids are plants that belong to the family (biology), family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Orchids are cosmopolitan distribution, cosmopolitan plants that are found in almost every habitat (ecology), habitat on Earth except glaciers. The world's species richness, richest diversity of orchid genera and species is in the tropics. Orchidaceae is one of the two largest families of flowering plants, the other being the Asteraceae. It contains about 28,000 currently accepted species in 702 genera. The Orchidaceae family encompasses about 6–11% of all species of seed plants. The largest genera are ''Bulbophyllum'' (2,000 species), ''Epidendrum'' (1,500 species), ''Dendrobium'' (1,400 species) and ''Pleurothallis'' (1,000 species). It also includes ''Vanilla (genus), Vanilla'' (the genus of the Vanilla planifolia, vanilla plant), the type genus ''Orchis'', and many commonly cultivated plants s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiseptic
An antiseptic ( and ) is an antimicrobial substance or compound that is applied to living tissue to reduce the possibility of sepsis, infection, or putrefaction. Antiseptics are generally distinguished from ''antibiotics'' by the latter's ability to safely destroy bacteria within the body, and from ''disinfectants'', which destroy microorganisms found on non-living objects. Antibacterials include antiseptics that have the proven ability to act against bacteria. Microbicides which destroy virus particles are called viricides or antivirals. Antifungals, also known as antimycotics, are pharmaceutical fungicides used to treat and prevent mycosis (fungal infection). Surgery Antiseptic practices evolved in the 19th century through multiple individuals. Ignaz Semmelweis showed already in 1847-1848 that hand washing prior to delivery reduced puerperal fever. Despite this, many hospitals continued to practice surgery in unsanitary conditions, with some surgeons taking pride in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vandeae
The Vandeae is a large monophyletic tribe within the family of orchids. Scope This tribe contains 1,700 - 2,000 species in more than 150 genera. Epiphytic These orchids are pantropical epiphytes and occur in tropical Asia, the Pacific Islands, Australia and Africa. Many of these orchids are horticulturally important, especially ''Vanda'' and ''Phalaenopsis''. Subtribes This tribe is subdivided into four subtribes: *Subtribe Adrorhizinae *Subtribe Aeridinae (formerly, illegitimate subtribal name Sarcanthinae): largest subtribe with more than 1,000 species in 103 genera, including about 200 hybrid species; occurs mostly in Asia and Australia and with a few in Africa. They are distinguished from the other subtribes by having an entire rostellum, a relatively small spur formed by the lip, and four (or two) pollinia. *Subtribe Angraecinae Summerh.: about 400 species in 19 genera. They occur in tropical Africa, Madagascar, the Mascarene and Comoros Islands and two genera in tropi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaloids
Alkaloids are a broad class of naturally occurring organic compounds that contain at least one nitrogen atom. Some synthetic compounds of similar structure may also be termed alkaloids. Alkaloids are produced by a large variety of organisms including bacteria, fungi, plants, and animals. They can be purified from crude extracts of these organisms by acid-base extraction, or solvent extractions followed by silica-gel column chromatography. Alkaloids have a wide range of pharmacological activities including antimalarial (e.g. quinine), antiasthma (e.g. ephedrine), anticancer (e.g. homoharringtonine), cholinomimetic (e.g. galantamine), vasodilatory (e.g. vincamine), antiarrhythmic (e.g. quinidine), analgesic (e.g. morphine), antibacterial (e.g. chelerythrine), and antihyperglycemic activities (e.g. berberine). Many have found use in traditional or modern medicine, or as starting points for drug discovery. Other alkaloids possess psychotropic (e.g. psilocin) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudobulbs
In botany, a pseudobulb is a storage organ found in many epiphytic and terrestrial sympodial orchids. It is derived from a thickening of the part of a stem between leaf nodes and may be composed of just one internode or several, termed ''heteroblastic'' and ''homoblastic'' respectively. All leaves and inflorescences usually arise from this structure. Pseudobulbs formed from a single internode produce the leaves and inflorescence from the top, while those that are formed from several internodes can possess leaves along its length.Hew, C.S., and J.W.H. Yong. 2004The Physiology of Tropical Orchids in Relation to the Industry.Singapore: World Scientific Publishing Co. pp. 13-15. The modified sheath leaves that appear at the base of a pseudobulb and often enfold all or part of it are usually dry and papery, though in some orchids the sheaths bear leaf blades and the leaves at the pseudobulb's apex are reduced to scales.Dressler, R.L. 1993. Phylogeny and Classification of the Orchid Fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
