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Hexalectris Colemanii
''Hexalectris colemanii'', or Coleman's crested coralroot, is a terrestrial, myco-heterotrophic orchid lacking chlorophyll Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words , ("pale green") and , ("leaf"). Chlorophyll allow plants to a ... and subsisting entirely on nutrients obtained from mycorrhizal fungi in the soil. It is a very rare species endemic to southern Arizona, known from only three counties ( Pima, Cochise and Santa Cruz). It is closely related to '' H. revoluta'' and the two are sometimes considered varieties of the same species. References External linksVimeo, Center for Biological Diversity, video showing ''Hexalectris colemanii'' in Santa Rita Mountains of Arizona {{Taxonbar, from=Q17320490 Bletiinae Myco-heterotrophic orchids Orchids of the United States Flora of Arizona Endangered flora of the United States Plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myco-heterotrophic
Myco-heterotrophy (from Greek μύκης , "fungus", ἕτερος ', "another", "different" and τροφή ', "nutrition") is a symbiotic relationship between certain kinds of plants and fungi, in which the plant gets all or part of its food from parasitism upon fungi rather than from photosynthesis. A myco-heterotroph is the parasitic plant partner in this relationship. Myco-heterotrophy is considered a kind of cheating relationship and myco-heterotrophs are sometimes informally referred to as "mycorrhizal cheaters". This relationship is sometimes referred to as mycotrophy, though this term is also used for plants that engage in mutualistic mycorrhizal relationships. Relationship between myco-heterotrophs and host fungi Full (or obligate) myco-heterotrophy exists when a non-photosynthetic plant (a plant largely lacking in chlorophyll or otherwise lacking a functional photosystem) gets all of its food from the fungi that it parasitizes. Partial (or facultative) myco-heterotr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorophyll
Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words , ("pale green") and , ("leaf"). Chlorophyll allow plants to absorb energy from light. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types of chlorophyll exist in the photosystems of green plants: chlorophyll ''a'' and ''b''. History Chlorophyll was first isolated and named by Joseph Bienaimé Caventou and Pierre Joseph Pelletier in 1817. The presence of magnesium in chlorophyll was discovered in 1906, and was that element's first detection in living tissue. After initial work done by German chemi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycorrhizal
A mycorrhiza (from Greek μύκης ', "fungus", and ῥίζα ', "root"; pl. mycorrhizae, mycorrhiza or mycorrhizas) is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fungus in the plant's rhizosphere, its root system. Mycorrhizae play important roles in plant nutrition, soil biology, and soil chemistry. In a mycorrhizal association, the fungus colonizes the host plant's root tissues, either intracellularly as in arbuscular mycorrhizal fungi (AMF or AM), or extracellularly as in ectomycorrhizal fungi. The association is sometimes mutualistic. In particular species or in particular circumstances, mycorrhizae may have a parasitic association with host plants. Definition A mycorrhiza is a symbiotic association between a green plant and a fungus. The plant makes organic molecules such as sugars by photosynthesis and supplies them to the fungus, and the fungus supplies to the plant water and mineral nutrients, such as phos ... [...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] |
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four Corners region with Utah to the north, Colorado to the northeast, and New Mexico to the east; its other neighboring states are Nevada to the northwest, California to the west and the Mexican states of Sonora and Baja California to the south and southwest. Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912. Historically part of the territory of in New Spain, it became part of independent Mexico in 1821. After being defeated in the Mexican–American War, Mexico ceded much of this territory to the United States in 1848. The southernmost portion of the state was acquired in 1853 through the Gadsden Purchase. Southern Arizona is known for its desert cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pima County, Arizona
Pima County ( ) is a county in the south central region of the U.S. state of Arizona. As of the 2020 census, the population was 1,043,433, making it Arizona's second-most populous county. The county seat is Tucson, where most of the population is centered. The county is named after the Pima Native Americans who are indigenous to this area. Pima County includes the entirety of the Tucson Metropolitan Statistical Area, and it is the third largest metropolitan area in the Southwestern United States. Pima County contains parts of the Tohono O'odham Nation, as well as all of the San Xavier Indian Reservation, the Pascua Yaqui Indian Reservation, Organ Pipe Cactus National Monument, Ironwood Forest National Monument and Saguaro National Park. The vast majority of the county population lies in and around the city of Tucson (2021 city population: 543,242), filling much of the eastern part of the county with urban development. Tucson, Arizona's second largest city, is a major comme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cochise County, Arizona
Cochise County () is a county in the southeastern corner of the U.S. state of Arizona. It is named after the Native American chief Cochise. The population was 125,447 at the 2020 census. The county seat is Bisbee and the most populous city is Sierra Vista. Cochise County includes the Sierra Vista-Douglas, Arizona Metropolitan Statistical Area. The county borders southwestern New Mexico and the northwestern Mexican state of Sonora. History In 1528 Spanish Explorers: Álvar Núñez Cabeza de Vaca, Estevanico, and Fray Marcos de Niza survived a shipwreck off the Texas coast. Captured by Native Americans, they spent eight years finding their way back to Mexico City, via the San Pedro Valley. Their journals, maps, and stories led to the Cibola, seven cities of gold myth. The Expedition of Francisco Vásquez de Coronado in 1539 using it as his route north through what they called the Guachuca Mountains of Pima ( Tohono O'odham) lands and later part of the mission routes north, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Cruz County, Arizona
Santa Cruz is a County (United States), county in southern Arizona, United States. As of the 2020 United States census, 2020 census, the population is 47,669. The county seat is Nogales, Arizona, Nogales. The county was established in 1899. It borders Pima County, Arizona, Pima County to the north and west, Cochise County, Arizona, Cochise County to the east, and the Mexican state of Sonora (state), Sonora to the south. Santa Cruz County includes the Nogales, Arizona Micropolitan Statistical Area, which is also included in the Tucson, Arizona, Tucson-Nogales, Arizona Combined Statistical Area. History Santa Cruz County, formed on March 15, 1899, out of what was then Pima County, Arizona, Pima County, is named after the Santa Cruz River (Arizona), Santa Cruz River. The river originates in the Canelo Hills in the eastern portion of the county, crosses south into Mexico near the community of Santa Cruz, Sonora and then bends northwards returning into the United States (and Santa C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexalectris Revoluta
''Hexalectris revoluta'', the Chisos Mountain crested coralroot, is a terrestrial, myco-heterotrophic orchid lacking chlorophyll and subsisting entirely on nutrients obtained from mycorrhizal fungi in the soil. It is closely related to '' H. colemanii''; the two are regarded by some authors as varieties of the same species. ''Hexalectris revoluta'' is native to western Texas, southeastern New Mexico and Chihuahua Chihuahua may refer to: Places *Chihuahua (state), a Mexican state **Chihuahua (dog), a breed of dog named after the state **Chihuahua cheese, a type of cheese originating in the state **Chihuahua City, the capital city of the state **Chihuahua Mun .... References {{Taxonbar, from=Q15467222 Bletiinae Myco-heterotrophic orchids Orchids of the United States Orchids of Mexico Flora of Texas Flora of New Mexico Flora of Chihuahua (state) Plants described in 1941 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bletiinae
Bletiinae is a small-sized subtribe of orchids in the tribe Epidendreae of the subfamily Epidendroideae. The tribe was initially categorized by John Lindley in 1840. Bletiinae has been recognized as a subtribe to Arethuseae. However, most of its genera were removed in 2005, and the subtribe moved to Epidendreae The tribe Epidendreae of the Orchidaceae comprises six subtribes:C. Van den Berg "Artificial key to the subtribes of Epidendreae" in Pridgeon, Crib, Chase & Rasmussen, Eds.''Genera Orchidacearum Volume 4 Epidendroideae (Part one)'' p. 164. Oxfor ....C. Van den Berg "Artificial key to the subtribes of Epidendreae" in Pridgeon, Crib, Chase & Rasmussen, Eds.''Genera Orchidacearum Volume 4 Epidendroideae (Part one)'' p. 164. Oxford University Press, 2005 References Orchid subtribes {{Epidendreae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myco-heterotrophic Orchids
Myco-heterotrophy (from Greek μύκης , "fungus", ἕτερος ', "another", "different" and τροφή ', "nutrition") is a symbiotic relationship between certain kinds of plants and fungi, in which the plant gets all or part of its food from parasitism upon fungi rather than from photosynthesis. A myco-heterotroph is the parasitic plant partner in this relationship. Myco-heterotrophy is considered a kind of cheating relationship and myco-heterotrophs are sometimes informally referred to as "mycorrhizal cheaters". This relationship is sometimes referred to as mycotrophy, though this term is also used for plants that engage in mutualistic mycorrhizal relationships. Relationship between myco-heterotrophs and host fungi Full (or obligate) myco-heterotrophy exists when a non-photosynthetic plant (a plant largely lacking in chlorophyll or otherwise lacking a functional photosystem) gets all of its food from the fungi that it parasitizes. Partial (or facultative) myco-heterotr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchids Of The United States
Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering plants. The Orchidaceae have about 28,000 currently accepted species, distributed in about 763 genera. (See ''External links'' below). The determination of which family is larger is still under debate, because verified data on the members of such enormous families are continually in flux. Regardless, the number of orchid species is nearly equal to the number of bony fishes, more than twice the number of bird species, and about four times the number of mammal species. The 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'' (the genus of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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