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San Benito Island
The Islas San Benito lie in the Pacific Ocean off the west coast of the Mexican state of Baja California, 25 km west of Cedros Island. They are part of the Cedros Island ''delegación'', a subdivision of Ensenada (municipality), Baja California. The group consists of three barren islands, with a total area of 3.899 km2, and is surrounded by rocks and patches of kelp. The census of 2001 recorded a population of two on ''Benito del Oeste'' (West Benito); the other islands are uninhabited. Geography and ecology ''Benito del Oeste'' (West Benito, 2.6 km2) is the westernmost and largest island of the group. It appears as a plateau with a mound rising 600 ft (202 m) high near the center. A lighthouse tower, 4 m high, stands in the southern part of the island. The main lighthouse, a prominent, 17 m high tower with a dwelling, stands near the northwest extremity of the island. Rocas Pinaculo, two steep-to rocks, lie 1.6 km west of Benito del Oeste. ''Benito del ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cedros BC
Cedros, Portuguese and Spanish for ''cedars'', may refer to the following places: Honduras * Cedros, Francisco Morazán, a municipality in the Department of Francisco Morazán Mexico *Cedros Island, an island in the State of Baja California Portugal *Cedros (Horta), a civil parish in the municipality of Horta, island of Faial, Azores *Cedros (Santa Cruz das Flores), a civil parish in the municipality of Santa Cruz das Flores, island of Flores, Azores Trinidad and Tobago *Cedros, Trinidad and Tobago The coastal area known as Cedros lies on a peninsula at the South-Western end of the island of Trinidad. Located at the tip of the peninsula, Cedros or Bonasse as it is more commonly known especially on maps, lies mere miles off the coast of Venez ..., the southwestern peninsula of the island of Trinidad, as well as a town on that peninsula Cuba * Los Cedros, Santiago de Cuba, a hamlet in Palma Soriano {{geodis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Geospatial-Intelligence Agency
The National Geospatial-Intelligence Agency (NGA) is a combat support agency within the United States Department of Defense whose primary mission is collecting, analyzing, and distributing geospatial intelligence (GEOINT) in support of national security. Initially known as the National Imagery and Mapping Agency (NIMA) from 1996 to 2003, it is a member of the United States Intelligence Community. NGA headquarters, also known as NGA Campus East or NCE, is located at Fort Belvoir North Area in Springfield, Virginia. The agency also operates major facilities in the St. Louis, Missouri area (referred to as NGA Campus West or NCW), as well as support and liaison offices worldwide. The NGA headquarters, at , is the third-largest government building in the Washington metropolitan area after The Pentagon and the Ronald Reagan Building. In addition to using GEOINT for U.S. military and intelligence efforts, NGA provides assistance during natural and man-made disasters, aids in security ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Benedictus
''Senecio'' is a genus of flowering plants in the daisy family (Asteraceae) that includes ragworts and groundsels. Variously circumscribed taxonomically, the genus ''Senecio'' is one of the largest genera of flowering plants. Description Morphology The flower heads are normally rayed with the heads borne in branched clusters, and usually completely yellow, but green, purple, white and blue flowers are known as well. In its current circumscription, the genus contains species that are annual or perennial herbs, shrubs, small trees, aquatics or climbers. The only species which are trees are the species formerly belonging to '' Robinsonia'' occurring on the Juan Fernández Islands. Chemistry Pyrrolizidine alkaloids are found in all ''Senecio'' species. These alkaloids serve as a natural biocides to deter or even kill animals that would eat them. Livestock generally do not find them palatable. ''Senecio'' species are used as food plants by the larvae of some Lepidoptera species t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammillaria Neopalmeri
''Mammillaria'' is one of the largest genera in the cactus family (Cactaceae), with currently 200 known species and varieties recognized. Most of the mammillaria are native to Mexico, but some come from the southwest United States, the Caribbean, Colombia, Venezuela, Guatemala and Honduras. The common name "pincushion cactus" refers to this and the closely related genus ''Escobaria''. The first species was described by Carl Linnaeus as ''Cactus mammillaris'' in 1753, deriving its name from Latin ''mammilla'', "nipple", referring to the tubercles that are among the distinctive features of the genus. Numerous species are commonly known as globe cactus, nipple cactus, birthday cake cactus, fishhook cactus or pincushion cactus though such terms may also be used for related taxa, particularly ''Escobaria''. Description The distinctive feature of the genus is the possession of an areole split into two clearly separated parts, one occurring at the apex of the tubercle, the other at its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malva Pacifica
''Malva'' is a genus of herbaceous annual, biennial, and perennial plants in the family Malvaceae. It is one of several closely related genera in the family to bear the common English name mallow. The genus is widespread throughout the temperate, subtropical and tropical regions of Africa, Asia and Europe. The leaves are alternate, palmately lobed. The flowers are from 0.5–5 cm diameter, with five pink, lilac, purple or white petals. Etymology The word "mallow" is derived from Old English "mealwe", which was imported from Latin "malva", cognate with Ancient Greek μαλάχη (malakhē) meaning "mallow", both perhaps reflecting a Mediterranean term. The colour mauve was in 1859 named after the French name for this plant. Uses Ornamental plant Several species are widely grown as garden flowers. Very easily grown, short-lived perennials are often grown as ornamental plants. Food Many species are edible as leaf vegetables and commonly foraged in the West. Known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemizonia Streetsii
''Hemizonia'' is a genus of plants in the family Asteraceae. They are known generally as tarweeds, although some tarweeds belong to other genera, such as ''Madia'' and ''Deinandra''. Furthermore, ''Hemizonia'' is currently being revised; some species may be segregated into new genera. Range The ''Hemizonia'' tarweeds are native to southwestern North America, especially California. Description ''Hemizonia'' are usually sticky, aromatic, yellow-flowered annual plants which are hardy and competitive, especially in the dry Mediterranean climate of California. Selected species * '' Hemizonia arida'' — Red Rock tarweed * '' Hemizonia clementina'' — Catalina tarweed; Santa Catalina Island, Channel Islands * '' Hemizonia congesta'' — hayfield tarweed; Central Valley (California), California Coast Ranges, SW Oregon * ''Hemizonia conjugens— Deinandra conjugens'' — Otay tarweed; Otay Mesa area, San Diego. * ''Hemizonia fasciculata— Deinandra fasciculata'' — clustered tarwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dudleya Linearis
''Dudleya linearis'' is an insular succulent plant known by common name as the San Benitos Liveforever. It is endemic to the San Benito Islands, a small group of Mexican islands in the Pacific Ocean, west of Cedros Island. The population was almost wiped out by rabbits introduced to the island. Description Morphology ''Dudleya linearis'' possesses a thick and fleshy caudex, crowned on top by a rosette of tightly packed leaves. The leaves are light green and broadly linear, acuminate and 3 to 7.5 cm long, 6 to 9 mm thick. Bracteate flowering stems 1 to 1.5 cm long emerge from the plant, bearing a glaucous inflorescence consisting of 2 or 3 secund racemes. The flowers are suspended by pedicels that are up to 4 mm long. The calyx of the flower is segmented into 5 sepals, which are ovate-lanceolate, acute, and about 5 mm long. The corolla is a greenish-yellow, 8 to 9 mm long, with its tube shorter than the calyx. Taxonomy Taxonomic history ''Dudleya linearis'' was disc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptantha Patula
''Cryptantha'' is a genus of flowering plants in the borage family, Boraginaceae. They are known commonly as cat's eyes and popcorn flowers (the latter name is also used to refer to the closely related genus ''Plagiobothrys'',Hasenstab-Lehman, K. E. and M. G. Simpson. (2012)Cat's eyes and popcorn flowers: phylogenetic systematics of the genus ''Cryptantha'' s. l. (Boraginaceae).''Systematic Botany'' 37(3), 738-57. and members of the subtribe of ''Amsinckiinae''). They are distributed throughout western North America and western South America, but they are absent from the regions in between. These are annual or perennial herbs usually coated in rough hairs and bearing rounded flower corollas that are almost always white, but are yellow in a few species. Several morphological characters are used to distinguish species from one another, but the most definitive is the form of the nutlet, which varies in shape, size, color, and pattern of attachment. Systematics The genus has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passerculus Sandwichensis
The Savannah sparrow (''Passerculus sandwichensis'') is a small New World sparrow. It was the only member of the genus '' Passerculus'' and is typically the only widely accepted member. Comparison of mtDNA NADH dehydrogenase subunit 2 and 3 sequences indicates that the Ipswich sparrow, formerly usually considered a valid species (as ''Passerculus princeps''), is a well-marked subspecies of the Savannah sparrow, whereas the southwestern large-billed sparrow should be recognized as a distinct species (''Passerculus rostratus''). The species name ''sandwichensis'' is Latin, of place, Sandwich, Unalaska, or Aleutians area, from which came the first subspecies, Aleutian Savannah sparrow, to be described. The common name honors Savannah, Georgia where Alexander Wilson discovered the species in 1811. Distribution This passerine bird breeds in Alaska, Canada, northern, central and Pacific coastal United States, Mexico and Guatemala. The Pacific and Mexican breeders are resident, but o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passerculus Rostratus
The Savannah sparrow (''Passerculus sandwichensis'') is a small New World sparrow. It was the only member of the genus ''Passerculus'' and is typically the only widely accepted member. Comparison of mtDNA NADH dehydrogenase Protein subunit, subunit 2 and 3 DNA sequence, sequences indicates that the Ipswich sparrow, formerly usually considered a valid species (as ''Passerculus princeps''), is a well-marked subspecies of the Savannah sparrow, whereas the southwestern large-billed sparrow should be recognized as a distinct species (''Passerculus rostratus''). The species name ''sandwichensis'' is Latin, of place, Sandwich, Unalaska, or Aleutians area, from which came the first subspecies, Aleutian Savannah sparrow, to be described. The common name honors Savannah, Georgia where Alexander Wilson discovered the species in 1811. Distribution This passerine bird breeds in Alaska, Canada, northern, central and Pacific Ocean, Pacific coastal United States, Mexico and Guatemala. The Pacifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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