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Setaria Pumila
''Setaria pumila'' is a species of grass known by many common names, including yellow foxtail, yellow bristle-grass, pigeon grass, and cattail grass. It is native to Europe, but it is known throughout the world as a common weed. It grows in lawns, sidewalks, roadsides, cultivated fields, and many other places. This annual grass grows to well over in height, its mostly hairless stems ranging from green to purple-tinged in color. The leaf blades are hairless on the upper surfaces, twisting, and up to long. The inflorescence is a stiff, cylindrical bundle of spikelets long with short, blunt bristles. The panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are of ... may appear yellow or yellow-tinged. In New Zealand ''S. pumila'' can cover 20–40% of otherwise productive dairy farmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Louis Marie Poiret
Jean Louis Marie Poiret (11 June 1755 in Saint-Quentin7 April 1834 in Paris) was a French clergyman, botanist, and explorer. From 1785 to 1786, he was sent by Louis XVI to Algeria to study the flora. After the French Revolution, he became a professor of natural history at the Écoles Centrale of Aisne. The genus '' Poiretia'' of the legume family Fabaceae was named after him in 1807 by Étienne Pierre Ventenat. Selected publications *Coquilles fluviatiles et terrestres observées dans le département de l'Aisne et aux environs de Paris. Prodrome. – pp. i–xi –11 1–119. Paris. (Barrois, Soissons); (1801). * ''Leçons de flore: Cours complet de botanique'' (1819–1820); (illus. by P. J. F. Turpin). * * * * * ''Voyage en Barbarie, …, pendant les années 1785 et 1786'' (1789). * ''Histoire philosophique, littéraire, économique des plantes d'Europe''; (1825–1829). * with Jean-Baptiste de Lamarck Jean-Baptiste Pierre Antoine de Monet, chevalier de La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Jacob Roemer
Johann Jacob Roemer (8 January 1763, Zurich – 15 January 1819) was a physician and professor of botany in Zurich, Switzerland. He was also an entomologist. With Austrian botanist Joseph August Schultes, he published the 16th edition of Carl Linnaeus' ''Systema Vegetabilium''. Roemer's ''Genera insectorum'' is a most attractive Swiss publication on entomology. The splendid hand-coloured plates were drawn and engraved by the Swiss artist J.R. Schellenberg, an entomologist himself and therefore familiar with structural details. In 1793, he was elected a foreign member of the Royal Swedish Academy of Sciences. The botanical genus ''Roemeria'' from the family Papaveraceae is named after him. Works *''Magazin für die Botanik'', vols. 1–4; 1787–1791, with publicist Paul Usteri (1768-1831). Afterwards Roemer continued this series as ''Neues Magazin für die Botanik''. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josef August Schultes
Josef (Joseph) August Schultes (15 April 1773 in Vienna – 21 April 1831 in Landshut) was an Austrian botanist and professor from Vienna. Together with Johann Jacob Roemer (1763–1819), he published the 16th edition of Linnaeus' ''Systema Vegetabilium''. In 1821, he was elected a foreign member of the Royal Swedish Academy of Sciences. He was the father of Julius Hermann Schultes (1804-1840). In 1796 he received his doctorate at Vienna, where he was a student of Johann Peter Frank (1745-1821). Later on, he served as a professor of botany and natural history at the Theresianum in Vienna, followed by professorships at the Universities of Krakow (1806) and Innsbruck (1808). In 1809 he succeeded Franz von Paula Schrank (1747-1835) at the University of Landshut as a professor of natural history and botany. At Landshut, he also served as a medical director. Swedish botanist Carl Peter Thunberg commissioned Schultes to edit the first complete edition of his Flora Capensis, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poaceae
Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and pasture. The latter are commonly referred to collectively as grass. With around 780 genera and around 12,000 species, the Poaceae is the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, rice, barley, and millet as well as feed for meat-producing animals. They provide, through direct human consumption, just over one-half (51%) of all dietary energy; rice provides 20%, wheat supplies 20%, maize (corn) 5.5%, and other grains 6%. Some members of the Poaceae are used as building materials (bamboo, thatch, and straw); others can provide a source of biofuel, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weed
A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place", or a plant growing where it is not wanted.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. This introduces the concept of humans and their goals in a particular setting.Holzner, W., & Numata, M. (Eds.). (2013). ''Biology and ecology of weeds'' (Vol. 2). Springer Science & Business Media. The concept of weeds is particularly significant in agriculture, where the aim is growing crops or pastures of a single species, or a mixture of a few desired species. In such environments, other plant species are considered undesirable and therefore a weed. Besides, some weeds have undesirable characteristics making them a plant pest in most human settings.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24.Holzner, W., & Numata, M. (Eds.). (2013). ''Biology and ecology of weeds'' (Vol. 2). Spri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawn
A lawn is an area of soil-covered land planted with grasses and other durable plants such as clover which are maintained at a short height with a lawnmower (or sometimes grazing animals) and used for aesthetic and recreational purposes. Lawns are usually composed only of grass species, subject to weed and pest control, maintained in a green color (e.g., by watering), and are regularly mowed to ensure an acceptable length. Lawns are used around houses, apartments, commercial buildings and offices. Many city parks also have large lawn areas. In recreational contexts, the specialised names turf, pitch, field or green may be used, depending on the sport and the continent. The term "lawn", referring to a managed grass space, dates to at least than the 16th century. With suburban expansion, the lawn has become culturally ingrained in some areas of the world as part of the desired household aesthetic.Robbins, PaulLawn People: How Grasses, Weeds, and Chemicals Make Us Who We Are P ... [...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] |
Panicle
A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are often racemes. A panicle may have determinate or indeterminate growth. This type of inflorescence is largely characteristic of grasses such as oat and crabgrass, as well as other plants such as pistachio and mamoncillo. Botanists use the term paniculate in two ways: "having a true panicle inflorescence" as well as "having an inflorescence with the form but not necessarily the structure of a panicle". Corymb A corymb may have a paniculate branching structure, with the lower flowers having longer pedicels than the upper, thus giving a flattish top superficially resembling an umbel. Many species in the subfamily Amygdaloideae, such as hawthorns and rowans, produce their flowers in corymbs. up'' Sorbus glabrescens'' corymb with fruit See ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Setaria Pumila Inflorescence
''Setaria'' is a widespread genus of plants in the grass family. The name is derived from the Latin word ''seta'', meaning "bristle" or "hair", which refers to the bristly spikelets. The genus includes over 100 species distributed in many tropical and temperate regions around the world,Aliscioni, S., et alAn overview of the genus ''Setaria'' (Poaceae: Panicoideae: Paniceae) in the Old World: Systematic revision and phylogenetic approach.Abstract. Botany 2004. Salt Lake City. August 3, 2004. and members are commonly known as foxtail or bristle grasses. Description The grass is topped by a cylindrical long-haired head, which tend to droop when ripe. The seeds are less than in length. Species ; Currently accepted ; Formerly included Numerous species were once considered members of ''Setaria'' but have since been reassigned to the following genera: ''Brachiaria'', '' Dissochondrus'', ''Echinochloa'', ''Holcolemma'', '' Ixophorus'', ''Oplismenus'', ''Panicum'', ''Paspalidium'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Setaria
''Setaria'' is a widespread genus of plants in the grass family. The name is derived from the Latin word ''seta'', meaning "bristle" or "hair", which refers to the bristly spikelets. The genus includes over 100 species distributed in many tropical and temperate regions around the world,Aliscioni, S., et alAn overview of the genus ''Setaria'' (Poaceae: Panicoideae: Paniceae) in the Old World: Systematic revision and phylogenetic approach.Abstract. Botany 2004. Salt Lake City. August 3, 2004. and members are commonly known as foxtail or bristle grasses. Description The grass is topped by a cylindrical long-haired head, which tend to droop when ripe. The seeds are less than in length. Species ; Currently accepted ; Formerly included Numerous species were once considered members of ''Setaria'' but have since been reassigned to the following genera: ''Brachiaria'', '' Dissochondrus'', ''Echinochloa'', ''Holcolemma'', '' Ixophorus'', ''Oplismenus'', ''Panicum'', ''Paspalidium'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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