|
Gaillardia Henricksonii
''Gaillardia henricksonii'' is a Mexican species of flowering plants in the sunflower family. It is native to northwestern Mexico, found only in the State of Coahuila. ''Gaillardia henricksonii'' grows in soil derived from gypsum. It is an perennial herb up to tall, with a large taproot and leaves on the stem rather than clumped at the base. Leaves are long and narrow, up to long, covered with woolly hairs. Each flower head is about wide. Each head has 8 salmon-colored ray flowers surrounding 60-80 reddish or brownish disc flowers. It is named for American botanist James Solberg Henrickson James Solberg Henrickson (born 1940) is an American botanist born in Eau Claire, Wisconsin. He was a Professor of Biology at California State University, Los Angeles. He is currently a research fellow at the Plant Resources Center at the Universit .... It was first published in Wrightia 5(8): 305–307, f. 41. 1976. References henricksonii Flora of Coahuila Endemic flora of Mexic ... [...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] |
Coahuila
Coahuila (), formally Coahuila de Zaragoza (), officially the Free and Sovereign State of Coahuila de Zaragoza ( es, Estado Libre y Soberano de Coahuila de Zaragoza), is one of the 32 states of Mexico. Coahuila borders the Mexican states of Nuevo León to the east, Zacatecas to the south, and Durango and Chihuahua to the west. To the north, Coahuila accounts for a stretch of the Mexico–United States border, adjacent to the U.S. state of Texas along the course of the Rio Grande (Río Bravo del Norte). With an area of , it is the nation's third-largest state. It comprises 38 municipalities ''(municipios)''. In 2020, Coahuila's population is 3,146,771 inhabitants. The largest city and State Capital is the city of Saltillo; the second largest is Torreón (largest metropolitan area in Coahuila and 9th largest in Mexico); the third largest is Monclova (a former state capital); the fourth largest is Ciudad Acuña; and the fifth largest is Piedras Negras. History The name Coahui ... [...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] |
Salmon (color)
Salmon is a range of pinkish-orange to light pink colors, named after the color of salmon flesh. The first recorded use of ''salmon'' as a color name in English was in 1776.Maerz and Paul ''A Dictionary of Color'' New York:1930 McGraw-Hill Page 203; Color Sample of Salmon: Page 43 Plate 10 Color Sample A7 The actual color of salmon flesh varies from almost white to light orange, depending on their levels of the carotenoid astaxanthin due to how rich a diet of krill and shrimp the fish feeds on; salmon raised on fish farms are given non-synthetic or artificial coloring in their food. __TOC__ Variations of salmon Light salmon resembles the color salmon, but is lighter, not to be confused with dark salmon, which resembles salmon pink but is darker. Salmon pink (or ''salmon'' in Crayola crayons) was introduced by Crayola in 1949. See the List of Crayola crayon colors. Dark salmon resembles the color salmon, but is darker. Like the web colors ''light salmon'' and ''salmo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diagnosis (taxonomy)
In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain (biology), domain, kingdom (biology), kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class (biology), class, order (biology), order, family (biology), family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biologica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanical Latin
Botanical Latin is a technical language based on New Latin, used for descriptions of botanical taxa. Until 2012, International Code of Botanical Nomenclature mandated Botanical Latin to be used for the descriptions of most new taxa. It is still the only language other than English accepted for descriptions. The names of organisms governed by the Code also have forms based on Latin. Botanical Latin is primarily a written language. It includes taxon names derived from any language or even arbitrarily derived, and consequently there is no single consistent pronunciation system. When speakers of different languages use Botanical Latin in speech, they use pronunciations influenced by their own languages, or, notably in French, there may be variant spellings based on the Latin. There are at least two pronunciation systems used for Latin by English speakers. Neither system, however, works across the full spectrum of botanical names, because many non-Latin words, such as people's names, hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Solberg Henrickson
James Solberg Henrickson (born 1940) is an American botanist born in Eau Claire, Wisconsin. He was a Professor of Biology at California State University, Los Angeles. He is currently a research fellow at the Plant Resources Center at the University of Texas at Austin. Select publications * 1964. ''Pollen morphology of Fouquieriaceae''. Thesis (M.A.), Claremont Graduate School. 110 pp. * 1968 ''Vegetative Morphology of the Fouquieriacae''. Dissertation (PhD), Claremont Graduate School 234 pp. * 1969. ''The Succulent Fouquierias''. 7 pp. * 1973. '' Fouquieriacea DC.'' Volumen 1 of World Pollen and Spore Flora. Ed. Almqvist & Wiksell Periodical Co. 12 pp. * Richard Stephen Felger. 1973. ''Microanalysis and Identification of a Basket Fragment from Sonora, Mexico''. 7 pp. Books * 1969. ''Anatomy of Periderm and Cortex of Fouquieriaceae''. 30 pp. * 1971. ''Vascular Flora of the Northeast Outer Slopes of Haleakala Crater, East Maui, Hawaii''. Nº 7 of Contributions from the Nature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
