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Gutierrezia Petradoria
''Gutierrezia petradoria'' is a species of flowering plant in the family Asteraceae known by the common names San Pedro snakeweed and goldenrod snakeweed Distribution The plant is endemic to western Utah, located the Southwestern United States. It is native to the Lower Sevier River watershed, within Juab County and Millard County. Description ''Gutierrezia petradoria'' is a perennial herb to woody subshrub, growing up to in height. At the end of each branch there is an inflorescence of one or a few flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos .... The heads are larger than for most of the species in the genus. The head contains 5-13 disc florets with 4-10 yellow ray florets around the edge. The ray flowers are up to long, much larger and showier than in the case ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae were first described in the year 1740. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger family is unclear as the quantity of extant species in each family is unknown. Most species of Asteraceae are annual, biennial, or perennial herbaceous plants, but there are also shrubs, vines, and trees. The family has a widespread distribution, from subpolar to tropical regions in a wide variety of habitats. Most occur in hot desert and cold or hot semi-desert climates, and they are found on every continent but Antarctica. The primary common characteristic is the existence of sometimes hundreds of tiny individual florets which are held together by protective involucres in flower heads, or more technicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utah
Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its west by Nevada. Utah also touches a corner of New Mexico in the southeast. Of the fifty U.S. states, Utah is the 13th-largest by area; with a population over three million, it is the 30th-most-populous and 11th-least-densely populated. Urban development is mostly concentrated in two areas: the Wasatch Front in the north-central part of the state, which is home to roughly two-thirds of the population and includes the capital city, Salt Lake City; and Washington County in the southwest, with more than 180,000 residents. Most of the western half of Utah lies in the Great Basin. Utah has been inhabited for thousands of years by various indigenous groups such as the ancient Puebloans, Navajo and Ute. The Spanish were the first Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southwestern United States
The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, Nevada, Oklahoma, Texas, and Utah. The largest cities by metropolitan area are Phoenix, Las Vegas, El Paso, Albuquerque, and Tucson. Prior to 1848, in the historical region of Santa Fe de Nuevo México as well as parts of Alta California and Coahuila y Tejas, settlement was almost non-existent outside of Nuevo México's Pueblos and Spanish or Mexican municipalities. Much of the area had been a part of New Spain and Mexico until the United States acquired the area through the Treaty of Guadalupe Hidalgo in 1848 and the smaller Gadsden Purchase in 1854. While the region's boundaries are not officially defined, there have been attempts to do so. One such definition is from the Mojave Desert in California in the west (117° west longitude) t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sevier River
The Sevier River (pronounced "severe") is a -long river in the Great Basin of southwestern Utah in the United States. Originating west of Bryce Canyon National Park, the river flows north through a chain of high farming valleys and steep canyons along the west side of the Sevier Plateau before turning southwest and terminating in the endorheic basin of Sevier Lake in the Sevier Desert. It is used extensively for irrigation along its course, with the consequence that Sevier Lake is usually dry. The Sevier River drainage basin of covers more than 13 percent of Utah and includes parts of ten counties, of which the river flows through seven. The name of the river is derived from the Spanish ''Río Severo'', "violent river". The Sevier is the longest river entirely within the state of Utah. Course The Sevier River is formed by the confluence of Minnie Creek and Tyler Creek in Long Valley in Kane County. The headwaters are at an elevation of between the Markagunt Plateau (on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juab County, Utah
Juab County ( ) is a county in western Utah, United States. As of the 2010 United States Census, the population was 10,246. Its county seat and largest city is Nephi. Juab County is part of the Provo–Orem, Utah Metropolitan Statistical Area, which is also included in the Salt Lake City–Provo–Orem, Utah Combined Statistical Area. History The area of future Juab County was inhabited by nomadic indigenous peoples before the Mormon settlement of Utah beginning in 1847. Soon after, Mormons and others traveling through the area had established a road to California, leading SSW from Great Salt Lake City. It passed Salt Creek, flowing westward through a slough in the Wasatch Mountains. The area around this creek was often used as a stopping or camping spot by travelers, and by 1851 Mormon settlers had begun a settlement in the area. When the Utah Territory legislature created a county (by partitioning territory from Utah County) to oversee the growth and organization of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millard County, Utah
Millard County ( ) is a county in the U.S. state of Utah. As of the 2010 United States Census, the population was 12,503. Its county seat is Fillmore, and the largest city is Delta. History The Utah Territory legislature created the county on October 4, 1851, with territory not previously covered by county creations and including some area in the future state of Nevada. It was named for the thirteenth US President Millard Fillmore, who was in office then. Fillmore was designated as the county seat. The county boundaries were altered in 1852 and again in 1854. On March 2, 1861, the US government created the Nevada Territory, which effectively de-annexed the described portion of Millard County falling in that Territorial Proclamation. The county boundary was further altered in 1862, 1866, 1888, and in 1919. In 1921 a boundary adjustment with Sevier brought Millard to its present configuration. Fillmore, located near the geographic center of the territory, was originally built a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subshrub
A subshrub (Latin ''suffrutex'') or dwarf shrub is a short shrub, and is a woody plant. Prostrate shrub is a related term. "Subshrub" is often used interchangeably with "bush".Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 Because the criteria are matters of degree (normally of height) rather than of kind, the definition of a subshrub is not sharply distinguishable from that of a shrub; examples of reasons for describing plants as subshrubs include ground-hugging stems or low growth habit. Subshrubs may be largely herbaceous though still classified as woody, with overwintering perennial woody growth much lower-growing than deciduous summer growth. Some plants described as subshrubs are only weakly woody and some persist for only for a few years; others however, such as ''Oldenburgia paradoxa'' live indefinitely (though is still vulnerable to external effects), rooted in rocky cracks. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head (botany)
A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, composite flowers, or capitula, which are special types of inflorescences in which anything from a small cluster to hundreds or sometimes thousands of flowers are grouped together to form a single flower-like structure. Pseudanthia take various forms. The real flowers (the florets) are generally small and often greatly reduced, but the pseudanthium itself can sometimes be quite large (as in the heads of some varieties of sunflower). Pseudanthia are characteristic of the daisy and sunflower family (Asteraceae), whose flowers are differentiated into ray flowers and disk flowers, unique to this family. The disk flowers in the center of the pseudanthium are actinomorphic and the corolla is fused into a tube. Flowers on the periphery are zygomorp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gutierrezia
''Gutierrezia'' is a genus of flowering plants in the family Asteraceae, native to western North America and western South America. Plants of this genus are known generally as snakeweeds or matchweeds. Some species have been called greasewood. They are annual or perennial plants or subshrubs with yellow or white flowers. These plants contain chemical compounds which can be toxic to livestock and some are considered weeds. ; Species * ''Gutierrezia alamanii'' - Chihuahua * ''Gutierrezia argyrocarpa'' - Hidalgo * ''Gutierrezia arizonica'' – Arizona snakeweed - Arizona, Sonora * ''Gutierrezia baccharoides'' - Chile, Argentina * ''Gutierrezia californica'' – San Joaquin snakeweed - California, Baja California, Arizona ( Yavapai Co) * ''Gutierrezia conoidea'' - Chihuahua, Durango, Jalisco, Zacatecas * ''Gutierrezia dracunculoides'' - USA (from Arizona to Nebraska + Tennessee) * ''Gutierrezia dunalii'' - Morelos, México State * '' Gutierrezia elegans'' - Lone Mesa snakewe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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