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Bergia Texana
''Bergia texana'' is a species of flowering plant in the waterwort family known by the common name Texas bergia. It is native to the western and central United States and northern Mexico, where it is a plant of wetlands, living in mud and moist soils along the edges of rivers and pools. This is an annual or perennial herb producing a branching, glandular, hairy stem which grows upright or trailing up to 30 centimeters long. The leaves are 2 to 4 centimeters long, mainly oval in shape and pointed, and lightly toothed along the edges. The inflorescences appear at the tips of stem branches and in the leaf axils, bearing single flowers or small clusters. Each small flower has five green sepals and five greenish white petals. Some of the flowers open, while others are cleistogamous Cleistogamy is a type of automatic self-pollination of certain plants that can propagate by using non-opening, self-pollinating flowers. Especially well known in peanuts, peas, and pansies, this behavior i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Jackson Hooker
Sir William Jackson Hooker (6 July 178512 August 1865) was an English botanist and botanical illustrator, who became the first director of Kew when in 1841 it was recommended to be placed under state ownership as a botanic garden. At Kew he founded the Herbarium and enlarged the gardens and arboretum. Hooker was born and educated in Norwich. An inheritance gave him the means to travel and to devote himself to the study of natural history, particularly botany. He published his account of an expedition to Iceland in 1809, even though his notes and specimens were destroyed during his voyage home. He married Maria, the eldest daughter of the Norfolk banker Dawson Turner, in 1815, afterwards living in Halesworth for 11 years, where he established a herbarium that became renowned by botanists at the time. He held the post of Regius Professor of Botany at Glasgow University, where he worked with the botanist and lithographer Thomas Hopkirk and enjoyed the supportive friendshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moritz August Seubert
Moritz August Seubert (2 June 1818, in Karlsruhe – 8 April 1878, in Karlsruhe) was a German botanist. Life Seubert was the son of a medical officer of health. He first attended the ''Lyzeum'' in Karlsruhe and already at that time had contact with the botanist, Alexander Braun, who interested him in this subject. As of 1836, he studied medicine at the University of Heidelberg and then in 1837, he studied natural science at the University of Bonn. His teachers in Bonn were Georg August Goldfuss, Ludolph Christian Treviranus and Johann Jakob Nöggerath. After receiving his PhD in Bonn, he moved to the University of Berlin, where he qualified as a professor. In 1843, he began teaching as a private lecturer in Bonn.ADB: Seubert, Moritz August @ |
Wilhelm Gerhard Walpers
Wilhelm Gerhard Walpers (26 December 1816 in Mühlhausen – 18 June 1853 in Berlin) was a German botanist. This botanist is denoted by the List of botanists by author abbreviation, author abbreviation Walp. when Author citation (botany), citing a botanical name. He received his education at the Universities of University of Greifswald, Greifswald and University of Breslau, Breslau, earning his habilitation in 1848 at Berlin. He died on 18 June 1853 from a self-inflicted gunshot wound. The plant genus ''Walpersia'' (synonym ''Phyllota'') is named after him. Walpersia Harv. Selected publications * ''Repertorium botanices systematicæ'' (six volumes, 1842–1847). *References Botanists with author abbreviations 19th-century German botan ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elatinaceae
Elatinaceae is a family of flowering plants with ca 35 (to perhaps 50) species in two genera: ''Elatine'' and ''Bergia''. The ''Elatine'' are mostly aquatic herbs, and the ''Bergia'' are subshrubs to shrubs. ''Elatine'' species are widely distributed throughout the world from temperate to tropical zones, with its greatest diversity found in temperate zones. ''Bergia'' is found in temperate to tropical Eurasia and Africa, with two tropical and one tropical to temperate species in the Americas. The center for biodiversity of ''Bergia'' is the Old World tropics, and this is also the center for biodiversity for the family. Neither genus is found in arctic ecosystems. Member of the family have bisexual flowers, usually small flowers, single, or in cymes, with two to five overlapping petals. The plants have opposite or whorled leaves, which may have glands along their margins, and have stipules. The aquatic herbs in the genus ''Elatine'' often have reduced characteristics as par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers ,Mexico ''''. . making it the world's 13th-largest country by are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The primary factor that distinguishes wetlands from terrestrial land forms or Body of water, water bodies is the characteristic vegetation of aquatic plants, adapted to the unique anoxic hydric soils. Wetlands are considered among the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal species. Methods for assessing wetland functions, wetland ecological health, and general wetland condition have been developed for many regions of the world. These methods have contributed to wetland conservation partly by raising public awareness of the functions some wetlands provide. Wetlands occur naturally on every continent. The water in wetlands is either freshwater, brackish or seawater, saltwater. The main w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sepal
A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined by Noël Martin Joseph de Necker in 1790, and derived . Collectively the sepals are called the calyx (plural calyces), the outermost whorl of parts that form a flower. The word ''calyx'' was adopted from the Latin ,Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 not to be confused with 'cup, goblet'. ''Calyx'' is derived from Greek 'bud, calyx, husk, wrapping' ( Sanskrit 'bud'), while is derived from Greek 'cup, goblet', and the words have been used interchangeably in botanical Latin. After flowering, most plants have no more use for the calyx which withers or becomes vestigial. Some plants retain a thorny calyx, either dried or live, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleistogamy
Cleistogamy is a type of automatic self-pollination of certain plants that can propagate by using non-opening, self-pollinating flowers. Especially well known in peanuts, peas, and pansies, this behavior is most widespread in the grass family. However, the largest genus of cleistogamous plants is ''Viola''. The more common opposite of cleistogamy, or "closed marriage", is called chasmogamy, or "open marriage". Virtually all plants that produce cleistogamous flowers also produce chasmogamous ones.Meeuse, Bastiaan and Sean Morris. 1984. The sex life of flowers. New York, NY: Facts on File Publishers. pp 110-111. The principal advantage of cleistogamy is that it requires fewer plant resources to produce seeds than does chasmogamy, because development of petals, nectar and large amounts of pollen is not required. This efficiency makes cleistogamy particularly useful for seed production on unfavorable sites or adverse conditions. ''Impatiens capensis,'' for example, has been o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
