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Granite Mountains (northern San Bernardino County, California)
The Granite Mountains is an overall, east–west trending mountain range in the Mojave Desert and northern San Bernardino County, California. It lies within Fort Irwin National Training Center, about north of Fort Irwin. This mountain range is south of Death Valley National Park, south of the Quail Mountains, and west of the Avawatz Mountains. It is named in the southern portion of the following USGS 7.5-minute topographic quadrangle maps: West of Leach Spring, Leach Spring, and Leach Lake; and the northern portion of West of Drinkwater Lake and Drinkwater Lake. The mountain range extends slightly into the northern edge of West of Nelson Lake and Nelson Lake 7.5-minute topographic quadrangle maps. Geography The Granite Mountains is a concave southward, bow-shaped", range which stretches east-southeast from a point at latitude and longitude, to Granite Pass at . The hills east-southeast of Granite Pass, their highest elevation , extending another to are not named on the USG ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mojave Desert
The Mojave Desert (; ; ) is a desert in the rain shadow of the southern Sierra Nevada mountains and Transverse Ranges in the Southwestern United States. Named for the Indigenous peoples of the Americas, indigenous Mohave 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 Desert, Sonoran, Chihuahuan Desert, Chihuahuan, and Great Basin Desert, Great Basin deserts, form a larger List of North American deserts, North American desert. Of these, the Mojave is the smallest and driest. It 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 numb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grus (geology)
Grus is an accumulation of angular, coarse-grained fragments (particles of sand and gravel) resulting from the granular disintegration by the processes of chemical weathering, chemical and mechanical weathering of crystalline rocks (most notably granitoids) generally in an arid or semiarid region. Grus sand, when Cementation (geology), cemented into a sandstone, will form an arkose. Within a European context most of the saprolite mantles of Cenozoic, Late Cenozoic age are made up of grus, contrasting with Mesozoic and Cenozoic, Early Cenozoic saprolites made up of kaolinitic and laterite, ferrallitic material. See also * * References Deposition (geology) Regolith Weathering {{Deposition-geol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromus Madritensis
''Bromus madritensis'' is a species of brome grass known by the common name compact brome. The specific epithet ''madritensis'' refers to Madrid, Spain. It has a diploid number of 28. There are two subspecies: *''Bromus madritensis'' subsp. ''madritensis'': panicles less dense, stem and leaf sheath less hairy *''Bromus madritensis'' subsp. ''rubens'' ( syn. ''Bromus rubens'') – foxtail brome, foxtail chess, red brome: dense panicles and slightly hairy stems Description ''Bromus madritensis'' is an winter annual grass, growing solitary or tufted, with erect or ascending culms growing high. The leaf sheaths are downy or slightly hairy. The grass lacks auricles and the glabrous ligules are long. Its flat leaf blades are either glabrous or slightly hairy, and measure long and wide. The erect and ellipsoid panicles are long and wide, with short branches that ascend and slightly spread. The branches never droop and bear one or two spikelets each. The spikelets are long, l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atriplex Canescens
''Atriplex canescens'' (or chamiso, chamiza, four-wing saltbush) is a species of evergreen shrub in the family Amaranthaceae (subfamily Chenopodioideae) native to the western and midwestern United States. Description ''Atriplex canescens'' has a highly variable form, and readily hybridizes with several other species in the genus ''Atriplex''. The degree of polyploidy also results in variations in form. Its height can vary from 1 foot to 10 feet, but 2 to 4 feet is most common. The leaves are thin and 0.5 to 2 inches long. It is most readily identified by the fruits, which have four wings at roughly 90 degree angles and are densely packed on long stems. This species blooms from April to October. Habitat Fourwing saltbush is most common in early succession areas such as disturbed sites and active sand dunes. It is also found in more mature successions dominated by sagebrush—''Artemisia tridentata'' and shadscale. Uses Among the Zuni people, an infusion of dried root a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amsinckia Tessellata
''Amsinckia tessellata'' is a species of fiddleneck known by the common names bristly fiddleneck, tessellate fiddleneck, checker fiddleneck, and devil's lettuce. The plant is native to dry regions of western North America, more specifically eastern Washington and Idaho, much of California and the Great Basin, to southwest New Mexico (U.S.) and northwest Sonora and Baja California in Mexico, usually below elevation. It is a common plant in many types of habitats, including chaparral, oak woodland, xeric scrub, temperate valleys, disturbed areas, and deserts including the Mojave Desert and Sonoran Desert. __TOC__ Description ''Amsinckia tessellata'' is an 8–24 inches tall bristly annual herb similar in appearance to other fiddlenecks. Its coiled inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambrosia Dumosa
''Ambrosia dumosa'', the burro-weed or white bursage, a North American species of plants in the family Asteraceae. It is a common constituent of the creosote-bush scrub community throughout the Mojave Desert of California, Nevada, and Utah and the Sonoran Desert of Arizona and northwestern Mexico (Baja California, Baja California Sur, Sonora, Chihuahua). ''Ambrosia dumosa'' has been studied to determine allelopathic interactions with creosote bush, ''Larrea tridentata'', which produces a chemical that inhibits the growth of ''A. dumosa.'' Other studies have suggested that ''A. dumosa'' roots produce a chemical that causes them to grow away from conspecific roots, preventing competition for water resources. In addition to burro-weed, ''A. dumosa'' is also commonly called white bursage, and burrobush. Description ''Ambrosia dumosa'' or white bursage is a form of ragweed, is a highly branched shrub 20 to 90 cm in height. The younger stems are covered with soft gray-white hai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amaranthus Fimbriatus
''Amaranthus fimbriatus'' is a species of glabrous flowering plant in the Amaranthaceae family. It is commonly known as fringed amaranth or fringed pigweed. The plant is an annual herb that can often grow up to 0.7 m (2 ft.) in height. The flower is greenish to maroon. It is found in North America and in Mexico. It often grows on sandy, gravelly slopes, semideserts or in disturbed habitats. It usually blooms after the summer rains in these arid regions. It is considered to be an invasive weed. Two varieties of ''A. fimbriatus'' have been described: ''A. fimbriatus var. fimbriatus'' and ''A. fimbriatus var. denticulatus''. The small variations are found in the tepal A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very ...s. References Jepson Manual Treatment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encelia
''Encelia'' is a genus of the Family (biology), plant family Asteraceae whose members are frequently called brittlebushes. It consists of shrubs (and one geophyte) of arid environments in southwestern North America and western South America. All have n = 18 chromosomes. All the North American species are obligate Outcrossing, outcrossers. In cultivation, the species readily form fertile F1 hybrid, F1 hybrids, F2s, and backcrossing, backcrosses, but in natural areas of sympatry, F2s and backcrosses are absent or rare. ''Encelia'' species are used as food plants by the larvae of some Lepidoptera species including the leaf miner ''Bucculatricidae, Bucculatrix enceliae'' which feeds exclusively on ''Encelia farinosa''. The phylogenetic sister group of ''Encelia'' is a clade comprising the genera ''Enceliopsis'' and ''Geraea''. The three genera are informally called the "Encelia alliance". ''Encelia'' is named in honor of German biologist Christophorus Enzelius, 1517–1583. ;Spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ephedra (plant)
''Ephedra'' is a genus of gymnosperm shrubs. there were 77 recognized species. The various species of ''Ephedra'' are widespread in many arid regions of the world, ranging across southwestern North America, southern Europe, northern Africa, southwest and central Asia, northern China, and western South America. It is the only extant genus in its family, Ephedraceae, and order, Ephedrales, and one of the three living members of the division Gnetophyta alongside ''Gnetum'' and ''Welwitschia.'' In temperate climates, most ''Ephedra'' species grow on shores or in sandy soils with direct sun exposure. Common names in English include joint-pine, jointfir, Mormon-tea, or Brigham tea. The Chinese name for ''Ephedra'' species is ''mahuang'' (). ''Ephedra'' is the origin of the name of the stimulant ephedrine, which the plants contain in significant concentration. Description The family Ephedraceae, of which ''Ephedra'' is the only extant genus, are gymnosperms, and generally shrubs, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericameria
''Ericameria'' is a genus of North American shrubs in the family Asteraceae. ''Ericameria'' is known by the common names goldenbush, rabbitbrush, turpentine bush, and rabbitbush. Most are shrubs, but one species ''(Ericameria parishii, E. parishii)'' can reach tree stature. They are distributed in western Canada (Saskatchewan, Alberta, British Columbia) western United States (from the western Great Plains to the Pacific coast of the United States, Pacific) and northern Mexico. Bright yellow flower heads adorn the plants in late summer. All the species have disc florets, while some have ray florets but others do not. ''Ericameria nauseosa'', (synonym ''Chrysothamnus nauseosus''), is known for its production of latex. Etymology ''Ericameria'' is based on the genus name ''Erica (plant), Erica'' and the Greek language, Greek word ''meros'' ('part'), in reference to the similarity of the plant's leaves to those of ''Erica''. Uses This genus has a number of admirable landscape pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brickellia
''Brickellia'' is a North American genus of about 100 to 110 species of plants in the family Asteraceae, known commonly as brickellbushes. They are found in Canada, the United States, Mexico, and Central America. Many species are native to the American southwest, especially Texas. ''Brickellia'' is among the more basal (biology), basal lineages of the Eupatorieae and should not be assigned to a subtribe pending further research. They are mostly woody perennial shrubs. Some species have a very strong pleasant scent, while others smell distasteful. All contain high amounts of essential oils. germacrene, Germacrene D, a natural insecticide, is found in ''Brickellia veronicifolia, B. veronicifolia'' and probably other species, if not all. Despite their chemical defenses, brickellbushes are food for caterpillars of certain Lepidoptera. These include the noctuidae, noctuid moths ''Schinia trifascia'', ''Schinia oleagina'', which is known only from ''Brickellia'', ''Schinia buta'', whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yucca Schidigera
''Yucca schidigera'', also known as the Mojave yucca or Spanish dagger, is a perennial plant in the asparagus family Asparagaceae, native to the southwestern United States and northwestern Mexico. It is most common in the Mojave Desert, but also occurs extensively in the Sonoran Desert and west to the Pacific coast of southern California and Baja California. Description ''Yucca schidigera'' is a small evergreen tree growing to tall, with a dense crown of spirally arranged bayonet-like leaves on top of a conspicuous basal trunk. The bark is gray-brown, being covered with brown dead leaves near the top, becoming irregularly rough and scaly-to-ridged closer to the ground. The leaves are long and broad at the base, concavo-convex, thick, very rigid, and yellow-green to blue-green in color. The flowers are white, sometimes with a purple tinge, long (rarely to 7.5 cm), bell-shaped and segmented into six parts; they are produced in a compact, bulbous cluster tall at the top o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
