|
Stemonitis Lignicola
''Stemonitis'' is a distinctive genus of slime moulds found throughout the world (except Antarctica). They are characterised by the tall brown sporangia, supported on slender stalks, which grow in clusters on rotting wood. The genus was first described by German botanist Johann Gottlieb Gleditsch in 1753. A 2014 estimate suggests that there are 18 species in the genus. Identification within the genus is difficult, and can only be performed with confidence using a microscope or by DNA sequencing. A fossil specimen (in Burmese amber) is known from the mid-Cretaceous (99 ma). Species The following species are accepted by ''Species Fungorum'': *''Stemonitis axifera'' (Bull.) T.Macbr. (1889) *''Stemonitis farrensis'' T. N. Lakh. & Mukerji (1977) *''Stemonitis ferruginea'' Ehrenb. (1818) *''Stemonitis flavogenita'' E. Jahn (1904) *''Stemonitis foliicola'' Ing (1967) *''Stemonitis fusca'' Roth (1787) *''Stemonitis graciliformis'' Nann.-Bremek., Mukerji & Pasricha (1984) *''Stemonitis h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stemonitis Fusca
''Stemonitis fusca'' is a species of slime mold. It fruits in clusters on dead wood and has distinctive tall brown sporangium, sporangia supported on slender stalks with a total height of approximately 6–20 mm tall. Subspecies ''Stemonitis fusca'' var. ''rufescens'', Lister 1894 References Further reading * * External links Images of ''Stemonitis fusca'' {{Taxonbar, from=Q4441613 Myxogastria Species described in 1787 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood
Wood is a structural tissue/material found as xylem in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulosic fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or more broadly to include the same type of tissue elsewhere, such as in the roots of trees or shrubs. In a living tree, it performs a mechanical-support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients among the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, woodchips, or fibers. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stemonitis Splendens
''Stemonitis splendens'', commonly known as the chocolate tube slime, is a species of slime mold Slime mold or slime mould is an informal name given to a polyphyletic assemblage of unrelated eukaryotic organisms in the Stramenopiles, Rhizaria, Discoba, Amoebozoa and Holomycota clades. Most are near-microscopic; those in the Myxogastria .... Description Fruiting body The sporangia are dark purplish brown, smooth, dry, 10–20 mm tall, and 1–2 mm in diameter. The stem is black, 3–5 mm long, and less than 1 mm thick. Spore The spores are 6–9 μm in diameter, brown, globose, and covered in small warts. They are released into the air if touched. Ecology and distribution Specimens grow in small, compact clusters on sheltered, decaying wood. It is quite common within its range. In Australia the species has been observed in all states. References {{Taxonbar, from=Q20721686 Myxogastria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Huston Macbride
Thomas Huston Macbride (July 31, 1848 – March 27, 1934) was the tenth president of the University of Iowa, serving from 1914 to 1916. Macbride was a naturalist and botanist, Macbride Hall at the University of Iowa is named for him. He often collaborated with Samuel Calvin. He was the 75th member of the Acacia chapter at the University of Iowa. In 1909, botanist Fred Jay Seaver published ''Macbridella'' a genus of (in fungi family of Melanommataceae), and named in his honour. Then in 1934, botanist Henry Clark Gilbert in the journal of Univ. Iowa Stud. Nat. Hist. circumscribed the genus of Amoebozoa Amoebozoa is a major Taxonomy (biology), taxonomic group containing about 2,400 described species of Amoeba, amoeboid protists, often possessing blunt, fingerlike, Pseudopod#Morphology, lobose pseudopods and tubular mitochondrial cristae. In trad ... (from the family Stemonitidaceae), '' Macbrideola''. He noted 'This new genus is named in honor of Dr. Thomas H. Macbride, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stemonitis Axifera
''Stemonitis axifera'' is a species of slime mold. It fruits in clusters on dead wood, and has distinctive tall reddish-brown sporangia, supported on slender stalks. Taxonomy The species was first described as ''Trichia axifera'' by Jean Baptiste François Pierre Bulliard in 1791. Thomas Huston MacBride transferred it to the genus ''Stemonitis'' in 1889. ''Stemonitis fasciculata'' and ''Stemonitis smithii'' are synonyms. Description The erect, stalked cylindrical sporangia are arranged into bundles or clusters that are tall. Each sporangium is supported by a thin, shining, black stalk that is long. The bright rusty brown color of mature sporangia lightens to a pale brown after the spores have been dispersed. Spores measure 5 by 7 μm and have a smooth to minutely punctate surface texture. Development ''Stemonitis axifera'' requires about 20 hours to finish making its fruit bodies. Of this, eight hours are needed for induction of the sporangia and the development of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high Sea level#Local and eustatic, eustatic sea levels that created numerous shallow Inland sea (geology), inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmese Amber
Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. The amber is of significant palaeontological interest due to the diversity of flora and fauna contained as inclusions, particularly arthropods including insects and arachnids but also birds, lizards, snakes, frogs and fragmentary dinosaur remains. The amber has been known and commercially exploited since the first century AD, and has been known to science since the mid-nineteenth century. Research on the deposit has attracted controversy due to the potential role of the amber trade in funding internal conflict in Myanmar and hazardous working conditions in the mines where it is collected. Geological context, depositional environment and age The amber is found in the Hukawng Basin, a large Cretaceous-Cenozoic sedimentary basin within north ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA Sequencing
DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, thymine, cytosine, and guanine. The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery. Knowledge of DNA sequences has become indispensable for basic biological research, Genographic Project, DNA Genographic Projects and in numerous applied fields such as medical diagnosis, biotechnology, forensic biology, virology and biological systematics. Comparing healthy and mutated DNA sequences can diagnose different diseases including various cancers, characterize antibody repertoire, and can be used to guide patient treatment. Having a quick way to sequence DNA allows for faster and more individualized medical care to be administered, and for more organisms to be identified and cataloged. The rapid advancements in DNA seque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microscope
A microscope () is a laboratory equipment, laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope. There are many types of microscopes, and they may be grouped in different ways. One way is to describe the method an instrument uses to interact with a sample and produce images, either by sending a beam of light or electrons through a sample in its optical path, by detecting fluorescence, photon emissions from a sample, or by scanning across and a short distance from the surface of a sample using a probe. The most common microscope (and the first to be invented) is the optical microscope, which uses lenses to refract visible light that passed through a microtome, thinly sectioned sample to produce an observable image. Other major types of microscopes are the fluorescence micro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Messiah College
Messiah University is a private interdenominational evangelical Christian university in Upper Allen Township, Pennsylvania, near Mechanicsburg. History The school was founded as "Messiah Bible School and Missionary Training Home" in 1909 by the Brethren in Christ Church. Originally located in Harrisburg, Pennsylvania, in the home of Messiah's first president, Samuel Rogers (S.R.) Smith, a local businessman and leader in the Brethren in Christ Church, the school was moved to Grantham in 1911, following the construction of the campus' first building, Old Main. (The university now uses a Mechanicsburg mailing address, but its main campus is still located in Grantham.) The building was constructed on land donated by S.R. Smith, who had moved his home and various business interests outside of the city to allow for growth in the farmlands surrounding Grantham. In the early years, the school offered a high school curriculum and several Bible programs. By 1921, it had also become a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sporangium
A sporangium (from Late Latin, ; : sporangia) is an enclosure in which spores are formed. It can be composed of a unicellular organism, single cell or can be multicellular organism, multicellular. Virtually all plants, fungus, fungi, and many other groups form sporangia at some point in their biological life cycle, life cycle. Sporangia can produce spores by mitosis, but in land plants and many fungi, sporangia produce genetically distinct haploid spores by meiosis. It's outdated name, sporange, is one of the few perfect rhymes for Orange (colour), orange. Fungi In some phyla of fungi, the sporangium plays a role in asexual reproduction, and may play an indirect role in sexual reproduction. The sporangium forms on the sporangiophore and contains Ploidy, haploid Cell nucleus, nuclei and cytoplasm. Spores are formed in the sporangiophore by encasing each haploid nucleus and cytoplasm in a tough outer membrane. During asexual reproduction, these spores are dispersed via wind and g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Mountain National Forest
The White Mountain National Forest (WMNF) is a federally managed forest contained within the White Mountains in the northeastern United States. It was established in 1918 as a result of the Weeks Act of 1911; federal acquisition of land had already begun in 1914. It has a total area of (1,225 sq mi). Most of the WMNF is in New Hampshire; a small part (about 5.65% of the forest) is in the neighboring state of Maine. Conservationist and community activist Katherine Sleeper Walden was instrumental in securing at-risk land for the forest, including thousands of acres in the region surrounding the locally famous Bowl near Wonalancet. While sometimes called a park, it is a national forest, used for logging and other limited commercial purposes in addition to recreational activities. The WMNF is the only national forest located in either New Hampshire or Maine, and is the most eastern national forest in the United States. Most of the major peaks over 4,000 feet high in New Hampshir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
