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Arctomecon
''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 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] |
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] |
Arctomecon Californica
''Arctomecon californica'' is a species of poppy known by several common names, including California bearpoppy, Las Vegas bearpoppy, golden bearpoppy, and yellow-flowered desert poppy. It is a perennial herb that is native to the eastern Mojave Desert. Description ''Arctomecon californica'' is a herbaceous perennial found in Creosote bush ''(Larrea tridentata)'' habitats, in barren shales with gypsum substrates, at in elevation. The plant flowers in mid spring with deep yellow petals from large buds on tall 1–3 feet branching inflorescences. Fruiting occurs in early summer. Distribution and habitat ''Arctomecon californica'' is native to the eastern Mojave Desert: in areas around Las Vegas, Nevada such as Tule Springs; the Lake Mead area; in and around Las Vegas; and in extreme Mohave County in Northwestern Arizona. It is also known in Utah from a single collection in Washington County, characterized as having "apparently occurred in cultivation on private property". Co ... [...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] |
Papaveraceae
The Papaveraceae are an economically important family of about 42 genera and approximately 775 known species of flowering plants in the order Ranunculales, informally known as the poppy family. The family is cosmopolitan, occurring in temperate and subtropical climates (mostly in the northern hemisphere), but almost unknown in the tropics. Most are herbaceous plants, but a few are shrubs and small trees. The family currently includes two groups that have been considered to be separate families: Fumariaceae and Pteridophyllaceae. Description The plants may be annual, biennial, or perennial. Usually herbaceous, a few species form shrubs or evergreen trees. They are lactiferous, producing latex, which may be milky or watery, coloured or plain. All parts contain a well-developed duct system (these ducts are called "laticifers"), producing a milky latex, a watery white, yellow or red juice. The simple leaves are alternate or sometimes whorled. They have petioles and are not enc ... [...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] |
Papaveroideae
Papaveroideae is a subfamily of the family Papaveraceae (the poppy family). Genera * Subfamily Papaveroideae Eaton :* Tribe Eschscholzieae Baill. ::* ''Dendromecon'' Benth. – California. ::* ''Eschscholzia'' Cham. – Western North America. ::* ''Hunnemannia'' Sweet – Eastern Mexico. :* Tribe Chelidonieae Dumort. ::* '' Bocconia'' L. – Central and southern America, Antilles ::* ''Chelidonium'' L. – Eurasia ::* '' Dicranostigma'' Hook.f. & Thomson – Central Asia ::* ''Eomecon'' Hance – Eastern China ::* '' Glaucium'' Mill. – Europe to Central Asia ::* '' Hylomecon'' Maxim. – Eastern Asia ::* ''Macleaya'' R.Br. – Eastern Asia ::* ''Sanguinaria'' L. – Eastern North America ::* '' Stylophorum'' Nutt. – Eastern North America, Eastern Asia :* Tribe Platystemoneae Spach ::* '' Hesperomecon'' Greene – Western North America ::* '' Meconella'' Nutt. – Western North America ::* '' Platystemon'' Benth. – Western North America :* Tribe Papavereae Dumort. ::* ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...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] |
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] |
Mojave Desert
The Mojave Desert ( ; mov, Hayikwiir Mat'aar; es, Desierto de Mojave) is a desert in the rain shadow of the Sierra Nevada mountains in the Southwestern United States. It is named for the indigenous Mojave people. It is located primarily in southeastern California and southwestern Nevada, with small portions extending into Arizona and Utah. The Mojave Desert, together with the Sonoran, Chihuahuan, and Great Basin deserts, forms a larger North American Desert. Of these, the Mojave is the smallest and driest. The Mojave Desert displays typical basin and range topography, generally having a pattern of a series of parallel mountain ranges and valleys. It is also the site of Death Valley, which is the lowest elevation in North America. The Mojave Desert is often colloquially called the "high desert", as most of it lies between . It supports a diversity of flora and fauna. The desert supports a number of human activities, including recreation, ranching, and military training. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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