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Asplenium × Herb-wagneri
''Asplenium'' × ''herb-wagneri'', commonly known as Wagner's spleenwort, is a rare, sterile, Hybrid (biology), hybrid fern. It is formed by the crossing of lobed spleenwort (''Asplenium pinnatifidum, A. pinnatifidum'') with maidenhair spleenwort (''Asplenium trichomanes, ''A. trichomanes'') and is intermediate in form between the two parents. Found in Illinois and Indiana in 1967 and 1970, respectively, it was identified but not given a scientific name until 1977. It grows on acidic rocks. Description ''Asplenium'' × ''herb-wagneri'' is a small fern. It has a short, upright rhizome with clathrate scales (bearing a lattice-like pattern). The scales have somewhat darker central cells and shorter tips in comparison with those of ''Asplenium pinnatifidum, A. pinnatifidum'' and other members of the Appalachian ''Asplenium'' complex. The fronds grow up to long and wide. The stipe (botany), stipe (the stalk of the leaf, below the blade) is short and a shiny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert H
The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of ''Hrōþ, Hruod'' () "fame, glory, honour, praise, renown, godlike" and ''berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin.Reaney & Wilson, 1997. ''Dictionary of English Surnames''. Oxford University Press. It is also in use Robert (surname), as a surname. Another commonly used form of the name is Rupert (name), Rupert. After becoming widely used in Continental Europe, the name entered England in its Old French form ''Robert'', where an Old English cognate form (''Hrēodbēorht'', ''Hrodberht'', ''Hrēodbēorð'', ''Hrœdbœrð'', ''Hrœdberð'', ''Hrōðberχtŕ'') had existed before the Norman Conquest. The feminine version is Roberta (given name), Roberta. The Italian, Portuguese, and Spanish form is Roberto (given name), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Michigan Botanical Garden
The University of Michigan Matthaei Botanical Gardens (300 acres, 121 hectares) includes botanical gardens, natural areas with trails, and several research-quality habitats and is part of the organization Matthaei Botanical Gardens and Nichols Arboretum. It was established in 1907. The botanical gardens includes outdoor display gardens, the Gaffield Children's Garden, a 10,000+ square-foot conservatory, and natural areas with walking trails. The gardens are named after former Michigan regent Frederick C. Matthaei Sr. and his wife Mildred, who donated of land. Gardens and hardy collections The gardens and hardy collections consist of several formal displays and outdoor plantings: *Alexandra Hicks Herb Knot Garden - modern version of a Tudor period garden, with hedges of the yew ('' Taxus x media 'hicksii''') and boxwood (''Buxus sempervirens ‘Green Gem’''), as well as lavender (''Lavandula angustifolia ‘Hidcote’''), creeping thyme (''Thymus serpyllum''), and winter sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Fern Journal
The ''American Fern Journal'' is a quarterly peer-reviewed academic journal published by the American Fern Society The American Fern Society was founded in 1893. Today, it has more than 1,000 members around the world, with various local chapters. Among its deceased members, perhaps the most famous is Oliver Sacks, who became a member in 1993. Willard N. Clut .... It is a specialized botany journal that covers all aspects of ferns and vascular plants. References External linksAmerican Fern Society Botany journals {{botany-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asplenium Hybrids
The fern genus ''Asplenium'' is well known for its hybridization capacity, especially in temperate zones. Appalachian ''Asplenium'' hybrid complex The Appalachian hybrid complex in ''Asplenium'' is a polyploid complex composed of three diploid species, three allotetraploid species formed by hybridisation and chromosome doubling from the former, and assorted diploid, triploid and tetraploid hybrids between the six species. The three diploid parent species are mountain spleenwort (''Asplenium montanum''), ebony spleenwort (''Asplenium platyneuron''), and American walking fern (''Asplenium rhizophyllum''). Their chromosome complements are abbreviated "MM", "PP" and "RR", respectively. Three possible sterile diploid hybrids can form from their hybridization: *''A. montanum × platyneuron'' (MP) has been collected on very rare occasions. *''A. montanum × rhizophyllum'' (MR) is theorized to exist, but has never been collected. *''A. platyneuron × rhizophyllum'' (PR) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topography, topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the Southwestern United States, American Southwest. Rock formations composed of sandstone usually allow the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chert
Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a precipitation (chemistry), chemical precipitate or a diagenesis, diagenetic replacement, as in petrified wood. Chert is typically composed of the petrified remains of siliceous ooze, the biogenic sediment that covers large areas of the deep ocean floor, and which contains the silicon skeletal remains of diatoms, Dictyochales, silicoflagellates, and radiolarians. Precambrian cherts are notable for the presence of fossil cyanobacteria. In addition to Micropaleontology, microfossils, chert occasionally contains macrofossils. However, some chert is devoid of any fossils. Chert varies greatly in color, from white to black, but is most often found as gray, brown, grayish brown and light green to rusty redW.L. Roberts, T.J. Campbell, G.R. Rapp Jr., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin County, Indiana
Martin County is a county in the U.S. state of Indiana. As of the 2020 United States census, the population was 9,812. The county seat is Shoals at the center of the county, and the county's only incorporated city is Loogootee, on the county's western border. History The Indiana Territory achieved statehood near the end of 1816. Shortly thereafter, the new State legislature created Dubois (December 1817) and Daviess (February 1818) counties. Due to the inflow of settlers into southwest Indiana, and the difficulty of accessing the county seats of those counties, Martin County was partitioned off from parts of those counties, being authorized on January 20, 1820. It was named for Maj. John T. Martin of Newport, Kentucky. Geography The hills of Martin County are largely wooded and cut with drainages; the available area is devoted to agriculture, development, or is under control of the US Government - about a third of the county belongs to the Naval Surface Warfare Center Cran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union County, Illinois
Union County is a county located in the U.S. state of Illinois. According to the 2020 United States census, it had a population of 17,244. Its county seat is Jonesboro. It is located in the southern portion of Illinois known locally as " Little Egypt". History Union County was formed out of Johnson County, nearly a year before the Illinois Territory gained statehood. It was named for a joint revival meeting of the Baptists and Dunkards, called a "union meeting". The county seal depicts the leaders of these two groups shaking hands. File:Union County Illinois 1818.png, For its first year of existence, Union County included an area of unorganized territory temporarily attached to it. File:Union County Illinois 1819.png, In 1819, the additional territory became Alexander County, reducing Union to its current borders. Geography According to the US Census Bureau, the county has a total area of , of which is land and (2.1%) is water. Climate and weather In recent years, ave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbarium
A herbarium (plural: herbaria) is a collection of preserved plant biological specimen, specimens and associated data used for scientific study. The specimens may be whole plants or plant parts; these will usually be in dried form mounted on a sheet of paper (called ''exsiccatum'', plur. ''exsiccata'') but, depending upon the material, may also be stored in boxes or kept in alcohol or other preservative. The specimens in a herbarium are often used as reference material in describing plant taxon, taxa. Some specimens may be Type (botany), types, some may be specimens distributed in published series called exsiccata, exsiccatae. The term herbarium is often used in mycology to describe an equivalent collection of preserved fungi, otherwise known as a fungarium. A xylarium is a herbarium specialising in specimens of wood. The term hortorium (as in the Liberty Hyde Bailey, Liberty Hyde Bailey Hortorium) has occasionally been applied to a herbarium specialising in preserving material of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Specimen
In biology, a type is a particular wikt:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set (mathematics), set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the ''International Code of Nomenclature for algae, fungi, and plants'' (ICN), the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it differs from species that have been previously described or related species. For a species to be considered valid, a species description must follow established guidelines and naming conventions dictated by relevant nomenclature codes. These include the International Code of Zoological Nomenclature (ICZN) for animals, the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants, and the International Committee on Taxonomy of Viruses (ICTV) for viruses. A species description often includes photographs or other illustrations of type material and information regarding where this material is deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florence Signaigo Wagner
Florence Signaigo Wagner (February 18, 1919 – October 21, 2019) was an American botanist who served as president of the American Fern Society. Biography Florence Signaigo was born in Birmingham, Michigan, on February 18, 1919 and grew up in Highland Park. Her first botanical interest focused on red algae. She studied at the College of William & Mary (BA Philosophy), and the University of Michigan (MA Latin American studies), before receiving a PhD from the University of California, Berkeley. Her doctoral dissertation, under the phycologist George Frederik Papenfuss, was titled, ''Contributions to the Morphology of the Delesseriaceae''. Florence Signaigo Wagner" (1954). She graduated in 1952, and published her thesis as a paper, in which she described the new genus Marionella, named for her landlady, the Berkeley embryologist and cytologist Marion Elizabeth Stilwell Cave (1904–1995). After marrying a fellow graduate student, she moved with him to Michigan in 1951 and they b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
