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Puccinia Mariae-wilsoniae
''Puccinia mariae-wilsoniae'', commonly known as the spring beauty rust, is a species of rust fungus found in North America. A plant pathogen, it grows on the leaves of the Claytonia, spring beauty flowering plants ''Claytonia caroliniana'' and ''Claytonia virginica, C. virginica''. Taxonomy The species was first species description, described scientifically in 1874 by Charles Horton Peck, although Peck attributed authorship to George William Clinton, mayor of Buffalo, New York in 1842–43; the first specimens were collected in Buffalo. The botanical name, specific epithet was originally published as ''mariae-wilsoni'', but this is an orthography, orthographic error that was later corrected to ''mariae-wilsoniae''. Early 20th-century rust authority Joseph Charles Arthur considered ''Uromyces claytoniae'' to be synonym (biology), synonymous with ''P. mariae-wilsoniae'', but this conclusion was rejected in a later publication, and the putative synonymy is recognized by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claytonia Virginica
''Claytonia virginica'', the Virginia springbeauty, eastern spring beauty, grass-flower or fairy spud, is an herbaceous perennial plant in the family Montiaceae. Its native range is eastern North America. Its scientific name honors Colonial Virginian botanist John Clayton (1694–1773). Description Springbeauty is a perennial plant, overwintering through a tuberous root. It is a trailing plant growing to tall. The leaves are slender lanceolate, long and broad, with a long petiole. The flowers are in diameter with five pale pink or white (rarely yellow) petals, and reflect UV light. It has a raceme inflorescence, in which its flowers branch off of the shoot. The individual flowers bloom for three days, although the five stamens on each flower are only active for a single day. Flowering occurs between March and May depending on part of its range and weather. The seeds are between in diameter and a shiny black. The seeds are released from the capsule fruit when it breaks ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorus
A sorus (pl. sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. A coenosorus (plural coenosori) is a compound sorus composed of multiple, fused sori. Etymology This New Latin word is from Ancient Greek σωρός (''sōrós'' 'stack, pile, heap'). Structure In lichens and other fungi, the sorus is surrounded by an external layer. In some red algae, it may take the form of depression into the thallus. In ferns, the sori form a yellowish or brownish mass on the edge or underside of a fertile frond. In some species, they are protected during development by a scale or film of tissue called the indusium, which forms an umbrella-like cover. Lifecycle significance Sori occur on the sporophyte generation, the sporangia within producing haploid meiospores. As the sporangia mature, the indusium shrivels so that spore release is unimpeded. The sporangia then burst and release the spores. As an aid to identification The shape, arrangemen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington (state)
Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington Territory, which was ceded by the British Empire in 1846, by the Oregon Treaty in the settlement of the Oregon boundary dispute. The state is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north. It was admitted to the Union as the 42nd state in 1889. Olympia is the state capital; the state's largest city is Seattle. Washington is often referred to as Washington state to distinguish it from the nation's capital, Washington, D.C. Washington is the 18th-largest state, with an area of , and the 13th-most populous state, with more than 7.7 million people. The majority of Washington's residents live in the Seattle metropolitan area, the center of trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montia Sibirica
''Claytonia sibirica'', the pink purslane, candy flower, Siberian spring beauty or Siberian miner's lettuce, is a flowering plant in the family Montiaceae, native to the Commander Islands (including Bering Island) of Siberia, and western North America from the Aleutian Islands and coastal Alaska south through Haida Gwaii, Vancouver Island, Cascade and Coast Ranges, to a southern limit in the Santa Cruz Mountains. Populations are also known from the Wallowa Mountains, Klamath Mountains, northern Idaho, and The Kootenai. A synonym is ''Montia sibirica''. The plant was introduced into the United Kingdom by the 18th century, where it has become very widespread.Dickie, T. W. (1915), ''Robertland'', 10/07/1915. Annals of the Kilmarnock Glenfield Ramblers Society. 1913 - 1919. P. 110. Habitat and description It is found in moist woods. It is long-lived perennial, biennial, or annual with hermaphroditic flowers which are protandrous and self-fertile. The numerous fleshy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montia Fontana
''Montia fontana'', commonly known as blinks or water blinks, water chickweed or annual water miner's lettuce, is a herbaceous annual plant of the genus ''Montia''. It is a common plant that can be found in wet environments around the globe, from the tropics to the Arctic. It is quite variable in morphology, taking a variety of forms. It is sometimes aquatic. Montia fontana is divided into four subspecies, subsp. fontana, subsp. amporitana, subsp. chondrosperma and subsp. variabilisWalters, S. M. 1953. Montia fontana L. Watsonia 3: 1-6. In some countries like Spain it is consumed as salad and it is highly demanded in markets and restaurants specialized in foraged foods like wild mushrooms. References External links Jepson Manual Treatment |
Claytonia Lanceolata
''Claytonia lanceolata'' is a species of wildflower in the family Montiaceae, known by the common names lanceleaf springbeauty and western springbeauty. Description This somewhat rare plant is native to western North America, growing in the sagebrush steppe and foothills up to alpine slopes. It thrives in the rocky soil of alpine climates where the snow never melts. It is a perennial herb growing from a tuber one to three centimeters wide. It produces a short, erect stem reaching a maximum height of . At its smallest the plant bears only its first two rounded leaves before flowering and dying back. Its thick leaves are helpful for storing water. If it continues to grow it produces two thick, lance-shaped leaves further up the stem. The star-shaped flowers come in inflorescences of three to fifteen blooms and they are white or pink, often with veiny stripes and yellow blotches near the base of each petal. The fruit is a small capsule containing a few seeds, which are black and sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portulacaceae
The Portulacaceae are a family of flowering plants, comprising 115 species in a single genus ''Portulaca''. Formerly some 20 genera with about 500 species, were placed there, but it is now restricted to encompass only one genus, the other genera being placed elsewhere. The family has been recognised by most taxonomists, and is also known as the purslane family. It has a cosmopolitan distribution, with the highest diversity in semiarid regions of the Southern Hemisphere in Africa, Australia, and South America, but with a few species also extending north into Arctic regions. The family is very similar to the Caryophyllaceae, differing in the calyx, which has only two sepals. The APG II system (2003; unchanged from the APG system of 1998) assigns it to the order Caryophyllales in the clade core eudicots. In the APG III system, several genera were moved to the Montiaceae, Didiereaceae, Anacampserotaceae and Talinaceae, thus making the family monotypic and only containing the genus ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variety (botany)
In botanical nomenclature, variety (abbreviated var.; in la, varietas) is a taxonomic rank below that of species and subspecies, but above that of form. As such, it gets a three-part infraspecific name. It is sometimes recommended that the subspecies rank should be used to recognize geographic distinctiveness, whereas the variety rank is appropriate if the taxon is seen throughout the geographic range of the species. Example The pincushion cactus, ''Escobaria vivipara'' (Nutt.) Buxb., is a wide-ranging variable species occurring from Canada to Mexico, and found throughout New Mexico below about . Nine varieties have been described. Where the varieties of the pincushion cactus meet, they intergrade. The variety ''Escobaria vivipara'' var. ''arizonica'' is from Arizona, while ''Escobaria vivipara'' var. ''neo-mexicana'' is from New Mexico. See also '' Capsicum annuum var. glabriusculum'' Definitions The term is defined in different ways by different authors. However, the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Septum
In biology, a septum (Latin for ''something that encloses''; plural septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate. Examples Human anatomy * Interatrial septum, the wall of tissue that is a sectional part of the left and right atria of the heart * Interventricular septum, the wall separating the left and right ventricles of the heart * Lingual septum, a vertical layer of fibrous tissue that separates the halves of the tongue. *Nasal septum: the cartilage wall separating the nostrils of the nose * Alveolar septum: the thin wall which separates the alveoli from each other in the lungs * Orbital septum, a palpebral ligament in the upper and lower eyelids * Septum pellucidum or septum lucidum, a thin structure separating two fluid pockets in the brain * Uterine septum, a malformation of the uterus * Vaginal septum, a lateral or transverse partition inside the vagina * Intermuscular sep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telium
Telium, plural telia, are structures produced by rust fungi as part of the reproductive cycle. They are typically yellow or orange drying to brown or black and are exclusively a mechanism for the release of teliospores which are released by wind or water to infect the alternate host in the rust life-cycle. The telial stage provides an overwintering strategy in the life cycle of a parasitic heteroecious fungus by producing teliospores; this occurs on cedar trees. A primary aecial stage is spent parasitizing a separate host plant which is a precursor in the life cycle of heteroecious fungi. Teliospores are released from the telia in the spring. The spores can spread many kilometers through the air, however most are spread near the host plant. Host plants There are a number of plants that can be infected by the telial stage. Therefore, the telial stage is considered a pathogen to those plants. A few specific plant pathogenic species are listed here with their hosts. # ''Puccinia grami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micrometre
The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Units (SI) equalling (SI standard prefix "micro-" = ); that is, one millionth of a metre (or one thousandth of a millimetre, , or about ). The nearest smaller common SI unit is the nanometre, equivalent to one thousandth of a micrometre, one millionth of a millimetre or one billionth of a metre (). The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria, and for grading wool by the diameter of the fibres. The width of a single human hair ranges from approximately 20 to . The longest human chromosome, chromosome 1, is approximately in length. Examples Between 1 μm and 10 μm: * 1–10 μm – length of a typical bacterium * 3–8 μm – width of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
