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Pinus Quadrifolia
''Pinus quadrifolia'', the Parry pinyon, is a pine in the pinyon pine group native to southernmost California in the United States and northern Baja California in Mexico, from 33° 30' N south to 30° 30' N. The Parry pinyon has a lifespan of around 200 to 500 years. It is usually found in rocky areas that often have thin soil. It occurs at moderate altitudes from to , rarely as low as and as high as . It is scarce and often scattered in this region, forming open woodlands, usually mixed with junipers. Other common names include nut pineFarjon, A. 2013''Pinus quadrifolia''.In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. Downloaded on 31 July 2013. and fourleaf pinyon pine. Description ''Pinus quadrifolia'' is a small to medium size tree, reaching tall and with a trunk diameter of up to , rarely more. The bark is thick, rough and scaly. The leaves (needles) are in fascicles of 4–5, moderately stout, long; glossy dark green with no stomata on the outer face ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filippo Parlatore
Filippo Parlatore (Palermo, 8 August 1816 – Florence, 9 September 1877) was an Italian botanist. He studied medicine at Palermo, but practiced only for a short time, his chief activity being during the cholera epidemic of 1837. Although at that time he had been an assistant professor of anatomy, a subject on which he had already written (Treatise on the human retina), he soon gave up all other interests to devote his entire attention to botany. He first made a study of the flora of Sicily, publishing in 1838 ''Flora panormitana'' (Palermo); he also dealt with the Sicilian flora in later works. In 1840 he left home to begin his extended botanical expeditions. He travelled all through Italy, then into Switzerland (where he remained for a time at Geneva with De Candolle), to France (where he was at Paris with Webb, the Englishman) and to England, his longest stay being at Kew. His part in the Third Congress of Italian naturalists held at Florence in 1841 was of significance for hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunburn
Sunburn is a form of radiation burn that affects living tissue, such as skin, that results from an overexposure to ultraviolet (UV) radiation, usually from the Sun. Common symptoms in humans and other animals include red or reddish skin that is hot to the touch or painful, general fatigue, and mild dizziness. Other symptoms include blistering, peeling skin, swelling, itching, and nausea. Excessive UV radiation is the leading cause of (primarily) non-malignant skin tumors,World Health Organization, International Agency for Research on Cance"Do sunscreens prevent skin cancer" Press release No. 132, 5 June 2000World Health Organization, International Agency for Research on Cance"Solar and ultraviolet radiation" IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, Volume 55, November 1997 which in extreme cases can be life-threatening. Sunburn is an inflammatory response in the tissue triggered by direct DNA damage by UV radiation. When the cells' DNA is ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resin
A resin is a solid or highly viscous liquid that can be converted into a polymer. Resins may be biological or synthetic in origin, but are typically harvested from plants. Resins are mixtures of organic compounds, predominantly terpenes. Common resins include amber, hashish, frankincense, myrrh and the animal-derived resin, shellac. Resins are used in varnishes, adhesives, food additives, incenses and perfumes. Resins protect plants from insects and pathogens, and are secreted in response to injury. Resins repel herbivores, insects, and pathogens, while the volatile natural phenol, phenolic compounds may attract benefactors such as predators of insects that attack the plant. Composition Most plant resins are composed of terpenes. Specific components are alpha-Pinene, alpha-pinene, pinene, beta-pinene, carene, delta-3 carene, and sabinene, the monocyclic terpenes limonene and terpinolene, and smaller amounts of the tricyclic sesquiterpenes, longifolene, caryophyllene, and cad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cahuilla
The Cahuilla, also known as ʔívil̃uqaletem or Ivilyuqaletem, are a Native Americans in the United States, Native American people of the various tribes of the Cahuilla Nation, living in the inland areas of southern California."California Indians and Their Reservations. ''SDSU Library and Information Access.'' Their original territory encompassed about . The traditional Cahuilla territory was near the geographic center of Southern California. It was bounded to the north by the San Bernardino Mountains, to the south by Borrego Springs, California, Borrego Springs and the Chocolate Mountains, to the east by the Colorado Desert, and to the west by the San Jacinto Mountains, San Jacinto Plain and the eastern slopes of the Palomar Mountain Range, Palomar Mountains. |
Woodrat
A pack rat or packrat, also called a woodrat or trade rat, are any species in the North and Central American rodent genus ''Neotoma''. Pack rats have a rat-like appearance, with long tails, large ears, and large, black eyes. Pack rats are noticeably larger than deer mice, harvest mice, and grasshopper mice, and are usually somewhat larger than cotton rats. Species ''Neotoma'' includes three subgenera, Daggers (†) mark extinct species: * Subgenus ''Neotoma'' ** '' Neotoma albigula'' - white-throated woodrat *** '' Neotoma albigula varia'' - Turner Island woodrat ** '' Neotoma angustapalata'' - Tamaulipan woodrat ** '' Neotoma bryanti'' - Bryant's woodrat *** '' Neotoma bryanti anthonyi'' - Anthony's woodrat *** †'' Neotoma bryanti bunkeri'' - Bunker's woodrat *** †'' Neotoma bryanti martinensis'' - San Martín Island woodrat ** '' Neotoma chrysomelas'' - Nicaraguan woodrat ** '' Neotoma devia'' - Arizona woodrat ** '' Neotoma ferruginea'' - Guatemala woodrat ** †'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christmas Tree
A Christmas tree is a decorated tree, usually an evergreen pinophyta, conifer, such as a spruce, pine or fir, associated with the celebration of Christmas. It may also consist of an artificial tree of similar appearance. The custom was developed in Central Europe, particularly Germany and Livonia (now Estonia and Latvia), where Protestantism, Protestant Christians brought decorated trees into their homes. The tree was traditionally decorated with "roses made of colored paper, tinsel, apples, wafers, and sweetmeats, confectionery". Moravian Church, Moravian Christians began to illuminate Christmas trees with candles, which were often replaced by Christmas lights after the advent of electrification. Today, there is a wide variety of Christmas ornament, traditional and modern ornaments, such as garlands, Christmas ornament, baubles, tinsel, and candy canes. An angel or star might be tree-topper, placed at the top of the tree to represent the Angel Gabriel or the Star of Bethlehe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Edulis
''Pinus edulis'', the Colorado pinyon, two-needle piñon, pinyon pine, or simply piñon, is a pine in the pinyon pine group native to the Southwestern United States, used for its edible pine nuts. Description The piñon pine (''Pinus edulis'') is a small to medium size tree, reaching tall and with a trunk diameter of up to , rarely more. Its growth is "at an almost inconceivably slow rate" growing only 1.8 meters (6 ft) in one hundred years under good conditions. for an average growth of 18 millimeters (0.72 in) per year. The bark is irregularly furrowed and scaly. The leaves ('needles') are in pairs, moderately stout, long, and green, with stomata on both inner and outer surfaces but distinctly more on the inner surface forming a whitish band. The cones are globose, long and broad when closed, green at first, ripening yellow-buff when 18–20 months old, with only a small number of thick scales, with typically 5–10 fertile scales. The cones open to broad when mature, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pine Nut
Pine nuts, also called piñón (), pinoli (), or pignoli, are the edible seeds of pines (family Pinaceae, genus ''Pinus''). According to the Food and Agriculture Organization, only 29 species provide edible nuts, while 20 are traded locally or internationally owing to their seed size being large enough to be worth harvesting; in other pines, the seeds are also edible but are too small to be of notable value as human food. The biggest producers of pine nuts are China, Russia, North Korea, Pakistan and Afghanistan. As pines are gymnosperms, not angiosperms (flowering plants), pine nuts are not " true nuts"; they are not botanical fruits, the seed not being enclosed in an ovary which develops into the fruit, but simply bare seeds—"gymnosperm" meaning literally "naked seed" (from and ). The similarity of pine nuts to some angiosperm fruits is an example of convergent evolution. Species and geographic spread In Asia, two species, in particular, are widely harvested: Korea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Culminicola
''Pinus culminicola'', commonly known as Potosí pinyon or Potosí Piñón, is a pine in the pinyon pine group, native and endemic to northeast Mexico. The range is highly localised, confined to a small area of high summits in the northern Sierra Madre Oriental in Coahuila and Nuevo León, and only abundant on the highest peak, Cerro Potosí (3713 m). It occurs at very high altitudes, from 3000–3700 m, in cool, moist subalpine climate conditions. Description It is a medium-size shrub, reaching 1.5–5 m tall and with a trunk diameter of up to 25 cm. The bark is grey-brown, thin and scaly at the base of the trunk. The leaves ('needles') are in fascicles of five, slender, 3–5.5 cm long, and deep green to blue-green, with stomata confined to a bright white band on the inner surfaces. The cones are globose, 3–4 cm long and broad when closed, green at first, ripening yellow-brown when 16–18 months old, with only a small number of thin, fragile scales, typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Johannis
''Pinus johannis'', the Johann's pine, is a pine in the pinyon pine group, native to North America. The range extends from southeast Arizona and southwest New Mexico, United States, south in Mexico along the Sierra Madre Occidental and the Sierra Madre Oriental to southern Zacatecas and San Luis Potosí. It occurs at moderate to high altitudes, from , in cool, dry climate conditions. Description ''Pinus johannis'' is a small to medium-size tree, often just a shrub, reaching tall and with a trunk diameter of up to . The bark is grey-brown, thin and scaly at the base of the trunk. The leaves ('needles') are in mixed fascicles of three and four, slender, long, and deep green to blue-green, with stomata confined to a bright white band on the inner surfaces. The cones are globose, long and broad when closed, green at first, ripening yellow-brown when 16–18 months old, with only a small number of thin, fragile scales, typically 6-12 fertile scales. The cones open to broad wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra De Juárez
The Sierra de Juárez, also known as the Sierra Juarez, is a mountain range located in Tecate Municipality and northern Ensenada Municipality, within the northern Baja California state of northwestern Mexico. It is a major mountain range in the long Peninsular Ranges System, that extends from Southern California down the Baja California peninsula into Baja California Sur state. Geography The Sierra de Juárez begins just south of the international frontier with California and extends about southwards. The highest peak in the range rises to about elevation at 31° 30′ 34″ North Latitude and 115° 32′ 5″ West Longitude. The Laguna Mountains (U.S.) are on the north, and the Sierra de San Pedro Mártir (México) are on the south. The Sierra forms part of the Baja California Peninsular Ranges. According to the Mexican government agency, CONABIO, the Sierra de Juárez occupies a total area of approximately long and averaging about wide. On the east the Sierra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
