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Equisetum Scirpoides
''Equisetum scirpoides'' (dwarf scouring rush or dwarf horsetail) Michx., Fl. Bor.-Amer. 2: 281 (1803). 2 n = 216.'' ''The smallest of the currently occurring representatives of the genus ''Equisetum'' (horsetail). The smallest ''Equisetum'', ''E. scirpoides'' has circumpolar distribution. Plants create compact and dense clumps, reaching a maximum height of about 30 cm. The assimilation and generative shoots are identical and grow together. The leaves reduced to a black sheath around the stem. The stems are green, unbranched, thick and about 1 mm with six ribs. The generative shoots with small cones dying after sowing the spores. The nodes occur at approximately 1 – 3 cm. The leaves are very small to about 1 mm, and arranged in around nodes. The corms are thin, yellow and brown. The roots very fine, black and densely surpassing the ground. Species grows best in the mud at the depth zone from 0 to 3 cm. Specimens reproduce primarily by vegetative divisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equisetum
''Equisetum'' (; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of ferns, which reproduce by spores rather than seeds. ''Equisetum'' is a " living fossil", the only living genus of the entire subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests. Some equisetids were large trees reaching to tall. The genus ''Calamites'' of the family Calamitaceae, for example, is abundant in coal deposits from the Carboniferous period. The pattern of spacing of nodes in horsetails, wherein those toward the apex of the shoot are increasingly close together, is said to have inspired John Napier to invent logarithms. Modern horsetails first appeared during the Jurassic period. A superficially similar but entirely unrelated flowering plant genus, mare's tail (''Hippuris''), is occasionally referred to as "horsetail", and adding to confusion, the name "mare's tail" is some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Michaux
André Michaux, also styled Andrew Michaud, (8 March 174611 October 1802) was a French botanist and explorer. He is most noted for his study of North American flora. In addition Michaux collected specimens in England, Spain, France, and even Persia. His work was part of a larger European effort to gather knowledge about the natural world. Michaux's contributions include ''Histoire des chênes de l'Amérique'' (1801; "The Oaks of North America") and ''Flora Boreali-Americana'' (1803; "The Flora of North America") which continued to be botanical references well into the 19th century. His son, François André Michaux, also became an authoritative botanist. Biography Michaux was born in Satory, part of Versailles, Yvelines, where his father managed farmland on the king's estate. Michaux was trained in the agricultural sciences in anticipation of his one-day assuming his father's duties, and received a basic classical 18th century education, including Latin and some Greek, unt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Pierre Étienne Vaucher
Jean Pierre Étienne Vaucher (17 April 1763 – 5 or 6 January 1841) was a Swiss Protestant pastor and botanist who was a native of the Republic of Geneva. He studied theology at Geneva, and from 1795 to 1821 was a pastor at the Church of Saint-Gervais. From 1808 to 1840 he was a professor of church history at the University of Geneva, and for a number of years he also taught classes in botany. Among his better-known students were botanist Augustin Pyramus de Candolle (1778-1841), scientist Hans Conrad Escher von der Linth (1767-1823) and Charles-Albert (1798-1849), the future King of Sardinia. Vaucher is remembered for his research involving the developmental history of algae. In his 1803 treatise ''Histoire des Conferves d'eau douce'', he described the process of conjugation in certain algae as a distinct sexual process. The phenomena of conjugation is a means of fertilization that takes place in green algae such as '' Spirogyra''. He is credited for describing the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oliver Atkins Farwell
Oliver Atkins Farwell (13 December 1867, Dorchester, Boston, Massachusetts – 18 September 1944, Lake Linden, Michigan) was a herbarium curator, botanist, and drug inspector. As a boy he moved with his family to Michigan, where he was educated at public schools and the Michigan State Normal School. He taught in 1889 and 1890 at Michigan state secondary schools and from 1890 to 1892 at Michigan State Normal School. In 1892 Farwell became a herbarium curator and drug inspector for Parke, Davis and Company and retired there in 1933. Rogers McVaugh Rogers McVaugh (May 30, 1909 – September 24, 2009) was a research professor of botany and the UNC Herbarium's curator of Mexican plants. He was also Adjunct Research Scientist of the Hunt Institute in Carnegie Mellon University and a Profe ..., Stanley A. Cain, and Dale J. Hagenah (1908–1971) wrote a 101-page account of Farwell's life and work. Selected publications * * * * * * * * * 1928 * * * References {{DEFAULTSORT:F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Lawson (botanist)
George Lawson (October 12, 1827 – November 10, 1895) was a Scottish-Canadian botanist who is considered the "father of Canadian botany". Born in Scotland, in 1858, he was appointed the Professor of Chemistry and Natural History at Queen's University. He helped to create one of Canada's first botanical gardens. In 1868, he became Professor of Chemistry and Mineralogy at Dalhousie University Dalhousie University (commonly known as Dal) is a large public research university in Nova Scotia, Canada, with three campuses in Halifax, a fourth in Bible Hill, and a second medical school campus in Saint John, New Brunswick. Dalhousie offer .... He was a charter member of the Royal Society of Canada and from 1887 to 1888 was its president. References External links * 19th-century Canadian botanists Scottish botanists Scottish curators Scottish librarians 1827 births 1895 deaths Botanists active in North America Academics of the University of Edinburg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl August Julius Milde
Carl August Julius Milde (2 November 1824 – 3 July 1871) was a German bryologist and pteridologist born in Breslau. In 1850 he obtained his medical doctorate from the University of Breslau, where he was a student of Heinrich Göppert (1800-1884). From 1853, he was an ''Oberlehrer'' at a ''Realschule'' in Breslau. Milde specialized in research of cryptogams, particularly mosses and ferns. The botanical genus ''Mildella'' from the family Pteridaceae was named in his honor by Vittore Benedetto Antonio Trevisan. Taxonomic literature : a selective guide to botanical publications In 1876, American |
Fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except the lycopods, and differ from mosses and other bryophytes by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the branched sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate ( Polypodiidae) and eusporangiate ferns, the latter group including horsetails, whisk ferns, marattioid ferns, and ophioglossoid fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garden Plants
A garden is a planned space, usually outdoors, set aside for the cultivation, display, and enjoyment of plants and other forms of nature. The single feature identifying even the wildest wild garden is ''control''. The garden can incorporate both natural and artificial materials. Gardens often have design features including statuary, follies, pergolas, trellises, stumperies, dry creek beds, and water features such as fountains, ponds (with or without fish), waterfalls or creeks. Some gardens are for ornamental purposes only, while others also produce food crops, sometimes in separate areas, or sometimes intermixed with the ornamental plants. Food-producing gardens are distinguished from farms by their smaller scale, more labor-intensive methods, and their purpose (enjoyment of a hobby or self-sustenance rather than producing for sale, as in a market garden). Flower gardens combine plants of different heights, colors, textures, and fragrances to create interest and deligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
