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Smelowskia Americana
''Smelowskia americana'' is a species of ''Smelowskia'' known by the common names alpine smelowskia, Siberian smelowskia, and American false candytuft. Native to mountain ranges of western North America including the Olympic Mountains and Cascade Range of Washington and the Rocky Mountains of British Columbia and Alberta south to Colorado, it occurs on rocky outcrops and talus at subalpine and alpine elevations, i.e., from , and blooms from late May until early September. Description This perennial rhizomatous herb typically forms a grayish-green mat with more or less hairy stems reaching a maximum height of 1.5 centimeters to around 20 centimeters. The ovate or obovate basal leaves are long by wide, entire or pinnately lobed. They are borne on petioles about as long as the leaf. Leaves on the flower stem are similar but smaller and borne alternately on short petioles. A solitary flower-head is borne on a slender upright or ascending stem. Flowers have four white, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Per Axel Rydberg
Per Axel Rydberg (July 6, 1860 – July 25, 1931) was a Swedish-born, American botanist who was the first curator of the New York Botanical Garden Herbarium. Biography Per Axel Rydberg was born in Odh, Västergötland, Sweden and emigrated to the United States in 1882. From 1884 to 1890, he taught mathematics at Luther Academy in Wahoo, Nebraska, while he studied at the University of Nebraska. He graduated from the University of Nebraska–Lincoln (B.S. in 1891) and (M.A. in 1895). He earned his graduate degree from Columbia University (Ph.D. in 1898). After he graduated, Rydberg received a commission from the United States Department of Agriculture to undertake a botanical exploration of western Nebraska. He received another one in 1892 to explore the Black Hills of South Dakota, and in 1893 he was in the Sand Hills, again in western Nebraska. During this time he continued to teach at the Luther Academy. In 1900 Rydberg conducted field work in southeast Colorado. In 1901 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Association For Plant Taxonomy
The International Association for Plant Taxonomy (IAPT) is an organization established to promote an understanding of plant biodiversity, facilitate international communication of research between botanists, and oversee matters of uniformity and stability in plant names. The IAPT was founded on July 18, 1950, at the Seventh International Botanical Congress in Stockholm, Sweden. The IAPT headquarters is located in Bratislava, Slovakia. Its president, since 2017, is Patrick S. Herendeen of the Chicago Botanic Garden; vice-president is Gonzalo Nieto Feliner of the Real Jardín Botánico, Madrid; and secretary-general is Karol Marhold of the Plant Science and Biodiversity Centre, Slovak Academy of Sciences, Bratislava. Both the taxonomic journal ''Taxon'' and the series ''Regnum Vegetabile'' are published by the IAPT. The latter series includes the ''International Code of Nomenclature for algae, fungi, and plants'', ''Index Nominum Genericorum'', and ''Index Herbariorum''. Purpos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Utah
This is a list of flora of Utah, a state in the western United States, listed alphabetically by family. , there are 3,930 species of plants in Utah, with 3,128 of those being indigenous and 792 being introduced through various means. Plants sorted by family Each entry lists the scientific name first (sorted alphabetically), then one or more common names for the plant (if any). Flora that have been introduced to the state are indicated with an † at the right of the scientific name. Entries are otherwise native. Entries marked with ‡ are considered invasive or noxious per the official list of noxious weeds maintained by the Utah Department of Agriculture and Food, though nine of those are not known to exist in Utah and have therefore not been included here. Amaranthaceae *''Allenrolfea occidentalis'' – iodine bush *''Atriplex argentea'' – silverscale saltbush, silver orache *'' Atriplex canescens'' – chamiso, chamiza, four-wing saltbush *''Atriplex confertifolia'' – s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Nevada
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of The Northwestern United States
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Western Canada
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Refugium (population Biology)
Refugium, plural refugia, the Latin for "refuge" or "hideaway", may refer to: * Refugium (fishkeeping), an appendage to a marine, brackish, or freshwater fish tank that shares the same water supply * Refugium (population biology), a location of an isolated or relict population of a once widespread animal or plant species ** Last Glacial Maximum refugia specifically, in anthropology * Refugium Range, a mountain range on Vancouver Island, British Columbia, Canada See also * Refuge (Buddhism) In Buddhism, refuge or taking refuge refers to a religious practice, which often includes a prayer or recitation performed at the beginning of the day or of a practice session. Since the period of Early Buddhism until present time, all Theravad ... * Refugium Peccatorum {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopatric Speciation
Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from each other to an extent that prevents or interferes with gene flow. Various geographic changes can arise such as the movement of continents, and the formation of mountains, islands, bodies of water, or glaciers. Human activity such as agriculture or developments can also change the distribution of species populations. These factors can substantially alter a region's geography, resulting in the separation of a species population into isolated subpopulations. The vicariant populations then undergo genetic changes as they become subjected to different selective pressures, experience genetic drift, and accumulate different mutations in the separated populations' gene pools. The barriers prevent the exchange of genetic information betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Last Glacial Maximum
The Last Glacial Maximum (LGM), also referred to as the Late Glacial Maximum, was the most recent time during the Last Glacial Period that ice sheets were at their greatest extent. Ice sheets covered much of Northern North America, Northern Europe, and Asia and profoundly affected Earth's climate by causing drought, desertification, and a large drop in sea levels. Based on changes in position of ice sheet margins dated via terrestrial cosmogenic nuclides and radiocarbon dating, growth of ice sheets commenced 33,000 years ago and maximum coverage was between 26,500 years and 19–20,000 years ago, when deglaciation commenced in the Northern Hemisphere, causing an abrupt rise in sea level. Decline of the West Antarctica ice sheet occurred between 14,000 and 15,000 years ago, consistent with evidence for another abrupt rise in the sea level about 14,500 years ago. Glacier fluctuations around the Strait of Magellan suggest the peak in glacial surface area was constrained to betwee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelowskia Media
''Smelowskia'', sometimes called false candytufts, is a genus of flowering plants in the crucifer family Brassicaceae, native to mountains and arctic regions of Asia and western North America. They may or may not be of Beringian origin. Species Currently accepted species include: *'' Smelowskia alba'' (Pall.) Regel *'' Smelowskia altaica'' (Pobed.) Botsch. *'' Smelowskia americana'' Rydb. *'' Smelowskia annua'' Rupr. *'' Smelowskia bartholomewii'' (Al-Shehbaz) Al-Shehbaz & Warwick *'' Smelowskia bifurcata'' (Turcz. ex Ledeb.) Botsch. *'' Smelowskia borealis'' (Greene) W.H.Drury & Rollins *'' Smelowskia calycina'' (Stephan ex Willd.) C.A.Mey. *'' Smelowskia czukotica'' (Botsch. & V.V.Petrovsky) Al-Shehbaz & Warwick *'' Smelowskia flavissima'' Kar. & Kir. *'' Smelowskia furcata'' (Al-Shehbaz) Al-Shehbaz & Warwick *'' Smelowskia heishuiensis'' (W.T.Wang) Al-Shehbaz & Warwick *'' Smelowskia inopinata'' (Kom.) Kom. *''Smelowskia jacutica'' (Botsch. & Karav.) Al-Shehbaz & Warwick *'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelowskia Porsildii
''Smelowskia'', sometimes called false candytufts, is a genus of flowering plants in the crucifer family Brassicaceae, native to mountains and arctic regions of Asia and western North America. They may or may not be of Beringian origin. Species Currently accepted species include: *'' Smelowskia alba'' (Pall.) Regel *'' Smelowskia altaica'' (Pobed.) Botsch. *'' Smelowskia americana'' Rydb. *'' Smelowskia annua'' Rupr. *'' Smelowskia bartholomewii'' (Al-Shehbaz) Al-Shehbaz & Warwick *'' Smelowskia bifurcata'' (Turcz. ex Ledeb.) Botsch. *'' Smelowskia borealis'' (Greene) W.H.Drury & Rollins *'' Smelowskia calycina'' (Stephan ex Willd.) C.A.Mey. *'' Smelowskia czukotica'' (Botsch. & V.V.Petrovsky) Al-Shehbaz & Warwick *'' Smelowskia flavissima'' Kar. & Kir. *'' Smelowskia furcata'' (Al-Shehbaz) Al-Shehbaz & Warwick *'' Smelowskia heishuiensis'' (W.T.Wang) Al-Shehbaz & Warwick *'' Smelowskia inopinata'' (Kom.) Kom. *''Smelowskia jacutica'' (Botsch. & Karav.) Al-Shehbaz & Warwick *'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beringia
Beringia is defined today as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72 degrees north latitude in the Chukchi Sea; and on the south by the tip of the Kamchatka Peninsula. It includes the Chukchi Sea, the Bering Sea, the Bering Strait, the Chukchi and Kamchatka Peninsulas in Russia as well as Alaska in the United States and the Yukon in Canada. The area includes land lying on the North American Plate and Siberian land east of the Chersky Range. At certain times in prehistory, it formed a land bridge that was up to wide at its greatest extent and which covered an area as large as British Columbia and Alberta together, totaling approximately . Today, the only land that is visible from the central part of the Bering land bridge are the Diomede Islands, the Pribilof Islands of St. Paul and St. George, St. Lawrence Island, St. Matthew Island, and King Island. The term ''Beringi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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