Horkeliella
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Horkeliella
''Horkeliella'' is a small genus of two species of flowering plants in the rose family known as false horkelias. They are both endemic to California. These wildflowers were named after the genus ''Horkelia'' due to their resemblance, but are different enough to maintain a separate genus from the horkelias. They have leaves made up of small, overlapping, toothed leaflets and inflorescences of white or pinkish flowers which are similar in appearance to horkelias. Congdon's false horkelia (''Horkeliella congdonis'') is native to the sagebrush slopes of the eastern Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily .... Purple false horkelia (''Horkeliella purpurascens'') is found mainly on the western slopes. External linksJepson Manual Treatment
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Horkeliella Congdonis
''Horkeliella'' is a small genus of two species of flowering plants in the rose family known as false horkelias. They are both endemic to California. These wildflowers were named after the genus '' Horkelia'' due to their resemblance, but are different enough to maintain a separate genus from the horkelias. They have leaves made up of small, overlapping, toothed leaflets and inflorescences of white or pinkish flowers which are similar in appearance to horkelias. Congdon's false horkelia (''Horkeliella congdonis'') is native to the sagebrush slopes of the eastern Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily .... Purple false horkelia (''Horkeliella purpurascens'') is found mainly on the western slopes. External linksJepson Manual Treatment
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Horkeliella Purpurascens
''Horkeliella'' is a small genus of two species of flowering plants in the rose family known as false horkelias. They are both endemic to California. These wildflowers were named after the genus '' Horkelia'' due to their resemblance, but are different enough to maintain a separate genus from the horkelias. They have leaves made up of small, overlapping, toothed leaflets and inflorescences of white or pinkish flowers which are similar in appearance to horkelias. Congdon's false horkelia (''Horkeliella congdonis'') is native to the sagebrush slopes of the eastern Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily .... Purple false horkelia (''Horkeliella purpurascens'') is found mainly on the western slopes. External linksJepson Manual Treatment
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Horkelia
:''See also '' Horkeliella'' (false horkelias).'' ''Horkelia'' is a genus of plants in the rose family. It includes several species of plants known commonly as horkelias. These are flowering plants closely related to the cinquefoils (''Potentilla'') and sometimes considered part of the same genus. There are nineteen species found in western North America, especially California. ''Horkelia'' was named for German scientist Johann Horkel. Species: *''Horkelia bolanderi'' – border horkelia *''Horkelia californica'' – California horkelia *'' Horkelia clevelandii'' – Cleveland's horkelia *'' Horkelia congesta'' – Sierra horkelia *'' Horkelia cuneata'' – wedgeleaf horkelia *'' Horkelia daucifolia'' – carrotleaf horkelia *''Horkelia fusca'' – dusky horkelia, pinewoods horkelia *'' Horkelia hendersonii'' – Henderson's horkelia *'' Horkelia hispidula'' – White Mountain horkelia *'' Horkelia howellii'' – Howell's horkelia *'' Horkelia marinensis'' – Point Reyes horkeli ...
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Potentilleae
Potentilleae is a tribe of the rose family, Rosaceae. The type genus is ''Potentilla''. Genera * ''Alchemilla'' (lady's mantle) * ''Aphanes'' (parsley-piert) * ''Argentina'' (silverweeds) * '' Chamaecallis'' * '' Chamaerhodos'' * ''Comarum'' * ''Dasiphora'' * ''Drymocallis'' * '' Fragaria'' (strawberries) * ''Horkelia'' * '' Horkeliella'' * ''Ivesia'' (mousetails) * '' Potaninia'' * ''Potentilla'' (cinquefoils, tormentils, barren strawberries) * ''Sibbaldia'' * ''Sibbaldianthe ''Sibbaldianthe'' is a genus of flowering plants belonging to the family Rosaceae. It is also in the Rosoideae subfamily. Its native range is from south eastern and eastern Europe (within East European Russia, Central European Russia, Crimea, Rom ...'' References External links Rosales tribes {{Rosoideae-stub ...
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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 ...
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Rosaceae
Rosaceae (), the rose family, is a medium-sized family of flowering plants that includes 4,828 known species in 91 genera. The name is derived from the type genus ''Rosa''. Among the most species-rich genera are ''Alchemilla'' (270), ''Sorbus'' (260), '' Crataegus'' (260), ''Cotoneaster'' (260), ''Rubus'' (250), and ''Prunus'' (200), which contains the plums, cherries, peaches, apricots, and almonds. However, all of these numbers should be seen as estimates—much taxonomic work remains. The family Rosaceae includes herbs, shrubs, and trees. Most species are deciduous, but some are evergreen. They have a worldwide range but are most diverse in the Northern Hemisphere. Many economically important products come from the Rosaceae, including various edible fruits, such as apples, pears, quinces, apricots, plums, cherries, peaches, raspberries, blackberries, loquats, strawberries, rose hips, hawthorns, and almonds. The family also includes popular ornamental trees and shrubs ...
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Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ...
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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, ...
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Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ...
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Sierra Nevada (U
The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily in Nevada. The Sierra Nevada is part of the American Cordillera, an almost continuous chain of mountain ranges that forms the western "backbone" of the Americas. The Sierra runs north-south and its width ranges from to across east–west. Notable features include General Sherman, the largest tree in the world by volume; Lake Tahoe, the largest alpine lake in North America; Mount Whitney at , the highest point in the contiguous United States; and Yosemite Valley sculpted by glaciers from one-hundred-million-year-old granite, containing high waterfalls. The Sierra is home to three national parks, twenty wilderness areas, and two national monuments. These areas include Yosemite, Sequoia, and Kings Canyon National Parks; and Devils ...
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Rosaceae Genera
Rosaceae (), the rose family, is a medium-sized family of flowering plants that includes 4,828 known species in 91 genera. The name is derived from the type genus ''Rosa''. Among the most species-rich genera are ''Alchemilla'' (270), ''Sorbus'' (260), '' Crataegus'' (260), ''Cotoneaster'' (260), ''Rubus'' (250), and ''Prunus'' (200), which contains the plums, cherries, peaches, apricots, and almonds. However, all of these numbers should be seen as estimates—much taxonomic work remains. The family Rosaceae includes herbs, shrubs, and trees. Most species are deciduous, but some are evergreen. They have a worldwide range but are most diverse in the Northern Hemisphere. Many economically important products come from the Rosaceae, including various edible fruits, such as apples, pears, quinces, apricots, plums, cherries, peaches, raspberries, Blackberry, blackberries, loquats, strawberries, rose hips, Crataegus, hawthorns, and almonds. The family also includes popular ornamental ...
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