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Arcytophyllum
''Arcytophyllum'' is a genus of flowering plants in the family Rubiaceae. The genus contains 18 species, distributed from New Mexico to Bolivia. Description Members of this genus are shrubs or dwarf shrubs that occupy mountainous habitats. Their leaves are oppositely arranged, small, sessile or sub-sessile, and possess inconspicuous secondary venation. Flowers are tetra- or pentamerous, with the stamens adnate to the white or pink funnelform or salverform corolla. The fruit is a capsule with septicidal dehiscence. Species * '' Arcytophyllum aristatum'' Standl. - Colombia, Ecuador * '' Arcytophyllum cachirense'' ( H.Karst.) K.Schum. - Colombia * '' Arcytophyllum capitatum'' (Benth.) K.Schum. - Colombia, Ecuador * '' Arcytophyllum ciliolatum'' Standl. - Ecuador, Perú * '' Arcytophyllum ericoides'' ( Willd. ex Roem. & Schult.) Standl. - Ecuador, Perú * '' Arcytophyllum fasciculatum'' (A.Gray) Terrell & H.Rob. - New Mexico, Texas, Coahuila * '' Arcytophyllum filiforme'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcytophyllum Lavarum
''Arcytophyllum'' is a genus of flowering plants in the Family (biology), family Rubiaceae. The genus contains 18 species, distributed from New Mexico to Bolivia. Description Members of this genus are shrubs or Subshrub, dwarf shrubs that occupy mountainous habitats. Their leaves are oppositely arranged, small, sessile or sub-sessile, and possess inconspicuous secondary venation. Flowers are tetra- or pentamerous, with the stamens Adnation, adnate to the white or pink funnelform or salverform corolla. The fruit is a Capsule (botany), capsule with septicidal Dehiscence (botany), dehiscence. Species * ''Arcytophyllum aristatum'' Paul Carpenter Standley, Standl. - Colombia, Ecuador * ''Arcytophyllum cachirense'' (Gustav Karl Wilhelm Hermann Karsten, H.Karst.) Karl Moritz Schumann, K.Schum. - Colombia * ''Arcytophyllum capitatum'' (George Bentham, Benth.) Karl Moritz Schumann, K.Schum. - Colombia, Ecuador * ''Arcytophyllum ciliolatum'' Paul Carpenter Standley, Standl. - Ecuador, Per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcytophyllum Filiforme
''Arcytophyllum'' is a genus of flowering plants in the family Rubiaceae. The genus contains 18 species, distributed from New Mexico to Bolivia. Description Members of this genus are shrubs or dwarf shrubs that occupy mountainous habitats. Their leaves are oppositely arranged, small, sessile or sub-sessile, and possess inconspicuous secondary venation. Flowers are tetra- or pentamerous, with the stamens adnate to the white or pink funnelform or salverform corolla. The fruit is a capsule with septicidal dehiscence. Species * '' Arcytophyllum aristatum'' Standl. - Colombia, Ecuador * '' Arcytophyllum cachirense'' ( H.Karst.) K.Schum. - Colombia * '' Arcytophyllum capitatum'' (Benth.) K.Schum. - Colombia, Ecuador * '' Arcytophyllum ciliolatum'' Standl. - Ecuador, Perú * '' Arcytophyllum ericoides'' ( Willd. ex Roem. & Schult.) Standl. - Ecuador, Perú * '' Arcytophyllum fasciculatum'' (A.Gray) Terrell & H.Rob. - New Mexico, Texas, Coahuila * '' Arcytophyllum filiforme'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dehiscence (botany)
Dehiscence is the splitting of a mature plant structure along a built-in line of weakness to release its contents. This is common among fruits, anthers and sporangia. Sometimes this involves the complete detachment of a part; structures that open in this way are said to be dehiscent. Structures that do not open in this way are called indehiscent, and rely on other mechanisms such as decay or predation to release the contents. A similar process to dehiscence occurs in some flower buds (e.g., ''Platycodon'', ''Fuchsia''), but this is rarely referred to as dehiscence unless circumscissile dehiscence is involved; anthesis is the usual term for the opening of flowers. Dehiscence may or may not involve the loss of a structure through the process of abscission. The lost structures are said to be caducous. Association with crop breeding Manipulation of dehiscence can improve crop yield since a trait that causes seed dispersal is a disadvantage for farmers whose goal is to collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coahuila
Coahuila (), formally Coahuila de Zaragoza (), officially the Free and Sovereign State of Coahuila de Zaragoza ( es, Estado Libre y Soberano de Coahuila de Zaragoza), is one of the 32 states of Mexico. Coahuila borders the Mexican states of Nuevo León to the east, Zacatecas to the south, and Durango and Chihuahua to the west. To the north, Coahuila accounts for a stretch of the Mexico–United States border, adjacent to the U.S. state of Texas along the course of the Rio Grande (Río Bravo del Norte). With an area of , it is the nation's third-largest state. It comprises 38 municipalities ''( municipios)''. In 2020, Coahuila's population is 3,146,771 inhabitants. The largest city and State Capital is the city of Saltillo; the second largest is Torreón (largest metropolitan area in Coahuila and 9th largest in Mexico); the third largest is Monclova (a former state capital); the fourth largest is Ciudad Acuña; and the fifth largest is Piedras Negras. History The name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asa Gray
Asa Gray (November 18, 1810 – January 30, 1888) is considered the most important American botanist of the 19th century. His '' Darwiniana'' was considered an important explanation of how religion and science were not necessarily mutually exclusive. Gray was adamant that a genetic connection must exist between all members of a species. He was also strongly opposed to the ideas of hybridization within one generation and special creation in the sense of its not allowing for evolution. He was a strong supporter of Darwin, although Gray's theistic evolution was guided by a Creator. As a professor of botany at Harvard University for several decades, Gray regularly visited, and corresponded with, many of the leading natural scientists of the era, including Charles Darwin, who held great regard for him. Gray made several trips to Europe to collaborate with leading European scientists of the era, as well as trips to the southern and western United States. He also built an extensive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Jakob Roemer
Johann Jacob Roemer (8 January 1763, Zurich – 15 January 1819) was a physician and professor of botany in Zurich, Switzerland. He was also an entomologist. With Austrian botanist Joseph August Schultes, he published the 16th edition of Carl Linnaeus' ''Systema Vegetabilium''. Roemer's ''Genera insectorum'' is a most attractive Swiss publication on entomology. The splendid hand-coloured plates were drawn and engraved by the Swiss artist J.R. Schellenberg, an entomologist himself and therefore familiar with structural details. In 1793, he was elected a foreign member of the Royal Swedish Academy of Sciences. The botanical genus '' Roemeria'' from the family Papaveraceae is named after him. Works *''Magazin für die Botanik'', vols. 1–4; 1787–1791, with publicist Paul Usteri (1768-1831). Afterwards Roemer continued this series as ''Neues Magazin für die Botanik''. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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