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Bear Poppy
''Arctomecon'' is a genus of the poppy family Papaveraceae commonly called the bear poppies or bear-paw poppies, after the distinctive appearance of the leaves. The three species occur only in the northeastern part of the Mojave Desert of North America, and are all uncommon. The plants consist of one or a cluster of basal rosettes of leaves with a generally light blue or grey appearance. Closer examination shows the leaves to be generally wedge-shaped, with the end of each divided into several teeth, and entirely covered with long hairs 5–15 mm in length. The effect is that of a hairy bear paw, whence both common and scientific name (''arktos'' bear + ''mecon'' poppy). The solitary terminal flowers are typical of poppies, with 2-3 sepals and 4-6 petals, either white or yellow, and starting out as nodding bud before become erect. The fruit capsule has 4-6 valves, opens from the top as it dries, releasing a handful of small wrinkled black seeds. ''Arctomecon'' habitat is typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctomecon Humilis
''Arctomecon humilis'' is an endangered, endemic species found only in the Dixie Corridor in southwest Utah. ''A. humilis'' grows in a very harsh desert environment, requiring a specific soil type. The plant’s common name is dwarf bear-poppy (''Arctomecon humilis''), which is indicative of the plant’s jagged, three “clawed” leaves. The poppy is a perennial plant, meaning it blooms annually. The dwarf bear-poppy is protected under the Endangered Species Act as of 1979. The plant is threatened by urban development, off-road vehicle use, and mining. Although hard to estimate, its population has diminished significantly over the years. There are several plans to protect the poppy, including making the land it occurs on a protected area. Description The sage-green leaves of the dwarf bear-poppy are covered in small, soft hairs. At the tip of each leaf there are three ridges, which can either be rounded or pointed. Each ridge has a larger, sharper hair that sticks out. The r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctomecon Merriamii
''Arctomecon merriamii'' is a species of poppy known by several common names, including desert bearpoppy, white bearpoppy, and great bearclaw poppy. It is native to the Mojave Desert of California and Nevada. This is a taprooted perennial herb producing stout, waxy stems 20 to 50 centimeters tall. Hairy pale green leaves with rounded teeth are located around the base of the plant. The inflorescence at the tip of each stem is composed of one white poppy flower with six petals up to 4 centimeters long and green sepals covered in long, white hairs. The fruit is a capsule up to 3.5 centimeters long containing many tiny seeds. Botanist Frederick Vernon Coville was first to identify the plant, and named it after naturalist Clinton Hart Merriam, who accompanied Coville on the Death Valley Expedition, the first of a series of expeditions funded by the US Congress to map the flora (phytogeography Phytogeography (from Greek φυτόν, ''phytón'' = "plant" and γεωγραφία, ''g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctomecon Californica 15
''Arctomecon'' is a genus of the poppy family Papaveraceae commonly called the bear poppies or bear-paw poppies, after the distinctive appearance of the leaves. The three species occur only in the northeastern part of the Mojave Desert of North America, and are all uncommon. The plants consist of one or a cluster of basal rosettes of leaves with a generally light blue or grey appearance. Closer examination shows the leaves to be generally wedge-shaped, with the end of each divided into several teeth, and entirely covered with long hairs 5–15 mm in length. The effect is that of a hairy bear paw, whence both common and scientific name (''arktos'' bear + ''mecon'' poppy). The solitary terminal flowers are typical of poppies, with 2-3 sepals and 4-6 petals, either white or yellow, and starting out as nodding bud before become erect. The fruit capsule has 4-6 valves, opens from the top as it dries, releasing a handful of small wrinkled black seeds. ''Arctomecon'' habitat is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Death Valley
Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. During summer, it is the Highest temperature recorded on Earth, hottest place on Earth. Death Valley's Badwater Basin is the point of lowest elevation in North America, at below sea level. It is east-southeast of Mount Whitney — the highest point in the contiguous United States, with an elevation of 14,505 feet (4,421 m). On the afternoon of July10, 1913, the National Weather Service, United States Weather Bureau recorded a high temperature of 134 °F (56.7 °C) at Furnace Creek, California, Furnace Creek in Death Valley, which stands as the Highest temperature recorded on Earth, highest ambient air temperature ever recorded on the surface of the Earth. This reading, however, and several others taken in that period are disputed by some modern experts. Lying mostly in Inyo County, California, near the border of California and Nevada, in the Great ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctomecon Merriamii 20
''Arctomecon'' is a genus of the poppy family Papaveraceae commonly called the bear poppies or bear-paw poppies, after the distinctive appearance of the leaves. The three species occur only in the northeastern part of the Mojave Desert of North America, and are all uncommon. The plants consist of one or a cluster of basal rosettes of leaves with a generally light blue or grey appearance. Closer examination shows the leaves to be generally wedge-shaped, with the end of each divided into several teeth, and entirely covered with long hairs 5–15 mm in length. The effect is that of a hairy bear paw, whence both common and scientific name (''arktos'' bear + ''mecon'' poppy). The solitary terminal flowers are typical of poppies, with 2-3 sepals and 4-6 petals, either white or yellow, and starting out as nodding bud before become erect. The fruit capsule has 4-6 valves, opens from the top as it dries, releasing a handful of small wrinkled black seeds. ''Arctomecon'' habitat is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctomecon Humilis 27
''Arctomecon'' is a genus of the poppy family Papaveraceae commonly called the bear poppies or bear-paw poppies, after the distinctive appearance of the leaves. The three species occur only in the northeastern part of the Mojave Desert of North America, and are all uncommon. The plants consist of one or a cluster of basal rosettes of leaves with a generally light blue or grey appearance. Closer examination shows the leaves to be generally wedge-shaped, with the end of each divided into several teeth, and entirely covered with long hairs 5–15 mm in length. The effect is that of a hairy bear paw, whence both common and scientific name (''arktos'' bear + ''mecon'' poppy). The solitary terminal flowers are typical of poppies, with 2-3 sepals and 4-6 petals, either white or yellow, and starting out as nodding bud before become erect. The fruit capsule has 4-6 valves, opens from the top as it dries, releasing a handful of small wrinkled black seeds. ''Arctomecon'' habitat is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Mead National Recreation Area
Lake Mead National Recreation Area is a U.S. national recreation area in southeastern Nevada and northwestern Arizona. Operated by the National Park Service, Lake Mead NRA follows the Colorado River corridor from the westernmost boundary of Grand Canyon National Park to just north of the cities of Laughlin, Nevada and Bullhead City, Arizona. It includes all of the eponymous Lake Mead as well as the smaller Lake Mohave – reservoirs on the river created by Hoover Dam and Davis Dam, respectively – and the surrounding desert terrain and wilderness. Formation of Lake Mead began in 1935, less than a year before Hoover Dam was completed. The area surrounding Lake Mead was protected a bird refuge in 1933, later established as the Boulder Dam Recreation Area in 1936 and the name was changed to Lake Mead National Recreation Area in 1947. In 1964, the area was expanded to include Lake Mohave and its surrounding area and became the first National Recreation Area to be designated as such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Canyon National Park
Grand Canyon National Park, located in northwestern Arizona, is the 15th site in the United States to have been named as a national park. The park's central feature is the Grand Canyon, a gorge of the Colorado River, which is often considered one of the Wonders of the World. The park, which covers of unincorporated area in Coconino and Mohave counties, received more than six million recreational visitors in 2017, which is the second highest count of all American national parks after Great Smoky Mountains National Park. The Grand Canyon was designated a World Heritage Site by UNESCO in 1979. The park celebrated its 100th anniversary on February 26, 2019. History The Grand Canyon became well known to Americans in the 1880s after railroads were built and pioneers developed infrastructure and early tourism. In 1903, President Theodore Roosevelt visited the site and said, The Grand Canyon fills me with awe. It is beyond comparison—beyond description; absolutely unparalleled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Las Vegas, Nevada
Las Vegas (; Spanish for "The Meadows"), often known simply as Vegas, is the 25th-most populous city in the United States, the most populous city in the state of Nevada, and the county seat of Clark County. The city anchors the Las Vegas Valley metropolitan area and is the largest city within the greater Mojave Desert. Las Vegas is an internationally renowned major resort city, known primarily for its gambling, shopping, fine dining, entertainment, and nightlife. The Las Vegas Valley as a whole serves as the leading financial, commercial, and cultural center for Nevada. The city bills itself as The Entertainment Capital of the World, and is famous for its luxurious and extremely large casino-hotels together with their associated activities. It is a top three destination in the United States for business conventions and a global leader in the hospitality industry, claiming more AAA Five Diamond hotels than any other city in the world. Today, Las Vegas annually ranks as one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bear
Bears are carnivoran mammals of the family Ursidae. They are classified as caniforms, or doglike carnivorans. Although only eight species of bears are extant, they are widespread, appearing in a wide variety of habitats throughout the Northern Hemisphere and partially in the Southern Hemisphere. Bears are found on the continents of North America, South America, Europe, and Asia. Common characteristics of modern bears include large bodies with stocky legs, long snouts, small rounded ears, shaggy hair, plantigrade paws with five nonretractile claws, and short tails. While the polar bear is mostly carnivorous, and the giant panda feeds almost entirely on bamboo, the remaining six species are omnivorous with varied diets. With the exception of courting individuals and mothers with their young, bears are typically solitary animals. They may be diurnal or nocturnal and have an excellent sense of smell. Despite their heavy build and awkward gait, they are adept runners, cli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gypsum
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall. Alabaster, a fine-grained white or lightly tinted variety of gypsum, has been used for sculpture by many cultures including Ancient Egypt, Mesopotamia, Ancient Rome, the Byzantine Empire, and the Nottingham alabasters of Medieval England. Gypsum also crystallizes as translucent crystals of selenite. It forms as an evaporite mineral and as a hydration product of anhydrite. The Mohs scale of mineral hardness defines gypsum as hardness value 2 based on scratch hardness comparison. Etymology and history The word ''gypsum'' is derived from the Greek word (), "plaster". Because the quarries of the Montmartre district of Paris have long furnished burnt gypsum (calcined gypsum) used for various purposes, this dehydrated gypsum became known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Torrey
John Torrey (August 15, 1796 – March 10, 1873) was an American botany, botanist, chemist, and physician. Throughout much of his career, he was a teacher of chemistry, often at multiple universities, while he also pursued botanical work, focusing on the flora of North America. His most renowned works include studies of the New York flora, the Mexican Boundary, the Pacific railroad surveys, and the uncompleted ''Flora of North America''. Biography Torrey was born in New York City, the second child of Capt. William and Margaret (née Nichols) Torrey.Robbins, C. C. (1968). John Torrey (1796–1873), His Life & Times. ''Bulletin of the Torrey Botanical Club''. Vol. 95, No. Nov. 6–Dec. 1968, 515–645. Torrey Botanical Club, New York. He showed a fondness for mechanics, and at one time planned to become a machinist. When he was 15 or 16, his father received an appointment to the state prison at Greenwich Village, New York, where he was tutored by Amos Eaton, then a pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
