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Frank Harlan Lewis
Frank Harlan Lewis (January 8, 1919 – December 12, 2008) was an American botanist, geneticist, taxonomist, systematist, and evolutionist who worked primarily with plants in the genus ''Clarkia''. He is best known for his theories of "catastrophic selection" and " saltational speciation", which are closely aligned with the concepts of quantum evolution and sympatric speciation. The concepts were first articulated in 1958 by Lewis and Peter H. Raven, and later refined in a 1962 paper by Lewis in which he coined the term "catastrophic selection". In 1966, he referred to the same mechanism as "saltational speciation". Lewis was Dean of Life Sciences at the University of California, Los Angeles from 1962 to 1981, a Fellow of the American Association for the Advancement of Science (1955), recipient of a Guggenheim Fellowship (1955), president of the Pacific Division of the Botanical Society of America (1959), president of the Society for the Study of Evolution (1961), president of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redlands, California
Redlands ( ) is a city in San Bernardino County, California, United States. As of the 2020 census, the city had a population of 73,168, up from 68,747 at the 2010 census. The city is located approximately west of Palm Springs and east of Los Angeles. History The area now occupied by Redlands was originally part of the territory of the Morongo and Aguas Calientes tribes of Cahuilla people. Explorations such as those of Pedro Fages and Francisco Garcés sought to extend Catholic influence to the indigenous people and the dominion of the Spanish crown into the area in the 1770s. The Tongva village of Wa’aachnga, located just to the west of present-day Redlands, was visited by Fr. Francisco Dumetz in 1810, and was the reason the site was chosen for a mission outpost. Dumetz reached the village on May 20, the feast day of Saint Bernardino of Siena, and thus named the region the San Bernardino Valley. The Franciscan friars from Mission San Gabriel established the San B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saltation (biology)
In biology, saltation () is a sudden and large mutational change from one generation to the next, potentially causing single-step speciation. This was historically offered as an alternative to Darwinism. Some forms of mutationism were effectively saltationist, implying large discontinuous jumps. Speciation, such as by polyploidy in plants, can sometimes be achieved in a single and in evolutionary terms sudden step. Evidence exists for various forms of saltation in a variety of organisms. History Prior to Charles Darwin most evolutionary scientists had been saltationists. Jean-Baptiste Lamarck was a gradualist but similar to other scientists of the period had written that saltational evolution was possible. Étienne Geoffroy Saint-Hilaire endorsed a theory of saltational evolution that "monstrosities could become the founding fathers (or mothers) of new species by instantaneous transition from one form to the next." Geoffroy wrote that environmental pressures could produce sudden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichostema
''Trichostema'' is a genus of flowering plants in the family Lamiaceae, which are aromatic herbs or subshrubs. These plants are native to North America. Many plant of this genus which have whorls of small blue flowers are called by the common name bluecurls. Species Species include: *''Trichostema arizonicum'' A.Gray – Arizona, New Mexico, Texas, Sonora, Chihuahua *''Trichostema austromontanum'' H.F.Lewis – Nevada, California, Baja California *''Trichostema brachiatum'' L. - central and eastern North America *'' Trichostema dichotomum'' L. – Bahamas, Quebec, Ontario, eastern and south-central United States *''Trichostema lanatum'' Benth. – California, Baja California *'' Trichostema lanceolatum'' Benth. – Washington, Oregon, California, Baja California *'' Trichostema laxum'' A.Gray – Oregon, California *'' Trichostema mexicanum'' Epling – northeastern Mexico *'' Trichostema micranthum'' A.Gray – Arizona, California, Baja California *''Trichostema nesophilum ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Community
A plant community is a collection or association of plant species within a designated geographical unit, which forms a relatively uniform patch, distinguishable from neighboring patches of different vegetation types. The components of each plant community are influenced by soil type, topography, climate and human disturbance. In many cases there are several soil types present within a given plant community. This is because the soil type within an area is influenced by two factors, the rate at which water infiltrates or exits (via evapotranspiration) the soil, as well as the rate at which organic matter (any carbon-based compound within the environment, such as decaying plant matter) enters or decays from the soil. Plant communities are studied substantially by ecologists, due to providing information on the effects of dispersal, tolerance to environmental conditions, and response to disturbance of a variety of plant species, information valuable to the comprehension of various pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal Sage Scrub
Coastal sage scrub, also known as coastal scrub, CSS, or soft chaparral, is a low scrubland plant community of the California coastal sage and chaparral subecoregion, found in coastal California and northwestern coastal Baja California. It is within the California chaparral and woodlands ecoregion, of the Mediterranean forests, woodlands, and scrub biome. Characteristics ;Plant community Coastal sage scrub is characterized by low-growing aromatic, and drought-deciduous shrubs adapted to the semi-arid Mediterranean climate of the coastal lowlands. The community is sometimes called "soft chaparral" due to the predominance of soft, drought-deciduous leaves in contrast to the hard, waxy-cuticled leaves on sclerophyllous plants of California's chaparral communities. ;Flora Characteristic shrubs and subshrubs include: * California sagebrush (''Artemisia californica'') * Black sage (''Salvia mellifera'') * White sage (''Salvia apiana'') * California buckwheat (''Eriogonum f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Chaparral And Woodlands
The California chaparral and woodlands is a terrestrial ecoregion of southwestern Oregon, northern, central, and southern California ( United States) and northwestern Baja California ( Mexico), located on the west coast of North America. It is an ecoregion of the Mediterranean forests, woodlands, and scrub biome, and part of the Nearctic realm. Setting Three sub-ecoregions The California chaparral and woodlands ecoregion is subdivided into three smaller ecoregions. * California coastal sage and chaparral ecoregion: In southern coastal California and northwestern coastal Baja California, as well as all the Channel Islands of California and Guadalupe Island. * California montane chaparral and woodlands: In southern and central coast adjacent and inland California, covering some of the mountains of: the Coast Ranges; the Transverse Ranges; and the western slopes of the northern Peninsular Ranges. * California interior chaparral and woodlands: In central interior Califor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Epling
Carl Clawson Epling (15 April 1894 – 17 November 1968) was an American botanist and taxonomist. He is best known for being the major authority on the Lamiaceae (mint family) of the Americas from the 1920s to the 1960s. In his later years he also developed an interest in genetics. University of California: In Memoriam − Carl Clawson Epling, Botany: UC Los Angeles December 1970. History Epling obtained his B.A. from the College of Agriculture at University of California, Berkeley in 1921. He received his M.A. in 1923 and Ph.D. in 1924 from[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Bernardino Valley College
San Bernardino Valley College is a public community college in San Bernardino, California. It is accredited by the Western Association of Schools and Colleges. The college has an enrollment of 17,044 students and covers . Valley College is also a part of the San Bernardino Community College District which includes Crafton Hills College located in nearby Yucaipa and the Professional Development Center in San Bernardino. History San Bernardino Junior College was established in 1926 and is the twenty-fifth oldest community college in California. In 1926, San Bernardino Valley College's campus was split between San Bernardino High School and Colton High School and consisted of 140 students and one administrator, George H. Jantzen, who was dean of the college. Today, San Bernardino Valley College offers classes to 25,000 students and runs on an annual budget of $59 million. The college district, which includes two campuses, has 148 full-time faculty, 429 part-time faculty and staff o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redlands High School
Redlands High School is a high school located in Redlands, California, alongside Redlands East Valley High School and Citrus Valley High School. It is the oldest Californian public high school still functioning on its original site. History The school was originally built in 1891 as a "unified high school" formed from three elementary school districts. Its auditorium was completed in 1928. The Girls' Gymnasium was completed as a New Deal Era project by the Public Works Administration in 1936. Notable alumni *Dave Aranda, a college football head coach for the Baylor Bears *Robin Backhaus, a bronze medalist in the 1972 Olympics' 200M butterfly event *Joan Baez, a folksinger * Ed Vande Berg, a Major League Baseball pitcher *Brian Billick, a head coach of the Baltimore Ravens |
Willis Linn Jepson
Willis Linn Jepson (August 19, 1867 – November 7, 1946) was an early California botanist, conservationist, and writer. Career Born at Little Oak Ranch near Vacaville, California, Jepson became interested in botany as a boy and explored the adjacent San Francisco Bay Area. He came in contact with various botanists before he entered college. In 1892, at the age of 25, Jepson, John Muir, and Warren Olney formed the Sierra Club, in Olney's San Francisco law office. From 1895 to 1898, Jepson served as instructor in Botany and carried on research at the University of California, Berkeley, Cornell University (1895), and Harvard University (1896–1897). He received his Ph.D. at Berkeley in 1899. He was made assistant professor in 1899, associate professor in 1911, professor in 1918, and professor emeritus in 1937. He was a Professor of Botany at UC Berkeley for four decades, thus his entire career was identified with the University of California. Jepson founded the Calif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philip A
Philip, also Phillip, is a male given name, derived from the Greek (''Philippos'', lit. "horse-loving" or "fond of horses"), from a compound of (''philos'', "dear", "loved", "loving") and (''hippos'', "horse"). Prominent Philips who popularized the name include kings of Macedonia and one of the apostles of early Christianity. ''Philip'' has many alternative spellings. One derivation often used as a surname is Phillips. It was also found during ancient Greek times with two Ps as Philippides and Philippos. It has many diminutive (or even hypocoristic) forms including Phil, Philly, Lip, Pip, Pep or Peps. There are also feminine forms such as Philippine and Philippa. Antiquity Kings of Macedon * Philip I of Macedon * Philip II of Macedon, father of Alexander the Great * Philip III of Macedon, half-brother of Alexander the Great * Philip IV of Macedon * Philip V of Macedon New Testament * Philip the Apostle * Philip the Evangelist Others * Philippus of Croton (c. 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guggenheim Fellowship
Guggenheim Fellowships are grants that have been awarded annually since by the John Simon Guggenheim Memorial Foundation to those "who have demonstrated exceptional capacity for productive scholarship or exceptional creative ability in the arts." Each year, the foundation issues awards in each of two separate competitions: * One open to citizens and permanent residents of the United States and Canada. * The other to citizens and permanent residents of Latin America and the Caribbean. The Latin America and Caribbean competition is currently suspended "while we examine the workings and efficacy of the program. The U.S. and Canadian competition is unaffected by this suspension." The performing arts are excluded, although composers, film directors, and choreographers are eligible. The fellowships are not open to students, only to "advanced professionals in mid-career" such as published authors. The fellows may spend the money as they see fit, as the purpose is to give fellows "b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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