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Desmodium Fernaldii
''Desmodium fernaldii'' is a species of flowering plant in the family Fabaceae. It is native to the southeastern United States. Description ''Desmodium fernaldii'' is a herbaceous perennial plant. Taxonomy ''Desmodium fernaldii'' was first described by the American botanist Bernice Schubert in 1950. The specific name ''fernaldii'' honors American botanist Merritt Lyndon Fernald "whose intensive work on the flora of irginiahas clarified many floristic problems of long standing". ''Desmodium fernaldii'' is a member of the ''Desmodium paniculatum'' complex, a group of closely related taxa that also includes '' Desmodium paniculatum'' ''sensu stricto'', '' Desmodium glabellum'', and '' Desmodium perplexum''. Alternatively, some botanists lump the taxa into a single polymorphic species, ''Desmodium paniculatum'' ''sensu lato ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium Paniculatum
''Desmodium paniculatum'', the panicled-leaf ticktrefoil, narrow-leaf tick-trefoil or panicled tickclover, is a perennial herb in the pea family, Fabaceae. Belonging to a nearly cosmopolitan genus, the panicled-leaf ticktrefoil is a common native to Eastern North America, ranging from Quebec to Florida and as far West as Texas, Nebraska, and Ontario. The sticky loment can be found in disturbed areas that receive plenty of light, such as roadsides, parks, and abandoned fields. Description ''Desmodium paniculatum'' grows to 3 feet tall in an erect and spreading habit with alternate, pinnately-trifoliolate leaves. The leaflets are lanceolate to oblong and are usually 2 to 10 times as long as wide. The pedicels are around 1 cm. The flowers of the paniculate inflorescence are light pinkish to lavender and appear June through September. The sticky loments that many people find attached to their shoes and pants are arranged in a row of 2-6 superiorly sinuate and inferiorly triang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium
''Desmodium'' is a genus of plants in the legume family Fabaceae, sometimes called tick-trefoil, tick clover, hitch hikers or beggar lice. There are dozens of species and the delimitation of the genus has shifted much over time. Species are distributed widely – from Quebec to northern Argentina in the Americas, across northern and southern tropical Africa, in the southern Arabian Peninsula, in Myanmar and Thailand, New Guinea, and northern and eastern Australia. Description These are mostly inconspicuous plants; few have bright or large flowers. Though some can become sizeable plants, most are herbs or small shrubs. Their fruit are loments, meaning each seed is dispersed individually enclosed in its segment. This makes them tenacious plants and some species are considered weeds in places. Uses Several ''Desmodium'' species release organic compounds, aerially and into the soil, which make them useful for agriculture: Allelopathic compounds are used there via push-pull tech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensu Lato
''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular concept, but it also appears in expressions that indicate the convention or context of the usage. Common qualifiers ''Sensu'' is the ablative case of the noun ''sensus'', here meaning "sense". It is often accompanied by an adjective (in the same case). Three such phrases are: * – "in the strict sense", abbreviation ''s.s.'' or ''s.str.''; * – "in the broad sense", abbreviation ''s.l.''; * – "in a relaxed, generous (or 'ample') sense", a similar meaning to ''sensu lato''. Søren Kierkegaard uses the phrase ''sensu eminenti'' to mean "in the pre-eminent r most important or significantsense". When appropriate, comparative and superlative adjectives may also be used to convey the meaning of "more" or "most". Thus ''sensu stricto' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymorphism (biology)
In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative '' phenotypes'', in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating). Ford E.B. 1965. ''Genetic polymorphism''. Faber & Faber, London. Put simply, polymorphism is when there are two or more possibilities of a trait on a gene. For example, there is more than one possible trait in terms of a jaguar's skin colouring; they can be light morph or dark morph. Due to having more than one possible variation for this gene, it is termed 'polymorphism'. However, if the jaguar has only one possible trait for that gene, it would be termed "monomorphic". For example, if there was only one possible skin colour that a jaguar could have, it would be termed monomorphic. The term polyphenism can be used to clarify that the different forms arise from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium Perplexum
''Desmodium perplexum'' is a species of flowering plant in the legume family Fabaceae. It is native to eastern North America. The specific name ''perplexum'' refers to the confusion surrounding this species since its initial description in 1950. ''Desmodium perplexum'' is similar in appearance to '' Desmodium glabellum''. The two species remained a source of confusion for botanists until a more reliable identification key became available in 2020. Consequently, much of the information published prior to that date tends to be misleading. Description ''Desmodium perplexum'' is a herbaceous perennial plant. It has trifoliate leaves with petioles at least long. Its fruit is a type of legume called a loment that separates into single-seeded segments with hooked hairs that stick to fur and clothing. ''Desmodium perplexum'' is morphologically similar to '' Desmodium glabellum''. The two species may be distinguished by a combination of fruiting and vegetative characters: Taxonomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium Glabellum
''Desmodium glabellum'' is a species of flowering plant in the legume family Fabaceae. It is native to the eastern and central United States. It is commonly called Dillenius' tick-trefoil in honor of Johann Dillenius, a British botanist of German birth. It is also known as the tall tick-trefoil. Description ''Desmodium glabellum'' is a herbaceous perennial plant. It grows to 5 feet tall with alternate palmately trifoliate leaves. Light pink to purplish flowers appear June through September. Seeds in sticky pods arranged in a row of 2-5 segments appear August–October. This species is very similar to ''Desmodium perplexum'' from which it was recently split. Taxonomy ''Desmodium glabellum'' was first described as ''Hedysarum glabellum'' by the French botanist André Michaux in 1803. The type specimen was collected in a grassland in "Lower Carolina". Michaux described the stem of the species as nearly glabrous, hence the specific name ''glabellum'' and the corresponding common na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensu Stricto
''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular concept, but it also appears in expressions that indicate the convention or context of the usage. Common qualifiers ''Sensu'' is the ablative case of the noun ''sensus'', here meaning "sense". It is often accompanied by an adjective (in the same case). Three such phrases are: * – "in the strict sense", abbreviation ''s.s.'' or ''s.str.''; * – "in the broad sense", abbreviation ''s.l.''; * – "in a relaxed, generous (or 'ample') sense", a similar meaning to ''sensu lato''. Søren Kierkegaard uses the phrase ''sensu eminenti'' to mean "in the pre-eminent r most important or significantsense". When appropriate, comparative and superlative adjectives may also be used to convey the meaning of "more" or "most". Thus ''sensu strict ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxon
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit. The group was formerly called Magnoliophyta. Angiosperms are by far the most diverse group of Embryophyte, land plants with 64 Order (biology), orders, 416 Family (biology), families, approximately 13,000 known Genus, genera and 300,000 known species. They include all forbs (flowering plants without a woody Plant stem, stem), grasses and grass-like plants, a vast majority of broad-leaved trees, shrubs and vines, and most aquatic plants. Angiosperms are distinguished from the other major seed plant clade, the gymnosperms, by having flowers, xylem consisting of vessel elements instead of tracheids, endosperm within their seeds, and fruits that completely envelop the seeds. The ancestors of flowering plants diverged from the commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merritt Lyndon Fernald
Merritt Lyndon Fernald (October 5, 1873 – September 22, 1950) was an American botanist. He was a respected scholar of the Taxonomy (biology), taxonomy and phytogeography of the vascular plant flora of temperate eastern North America. During his career, Fernald published more than 850 scientific papers and wrote and edited the seventh and eighth editions of ''Gray's Manual of Botany''. Fernald coauthored the book ''Edible Wild Plants of Eastern North America'' in 1919–1920 with Alfred Kinsey, which was published in 1943. Biography Fernald was born in Orono, Maine. His parents were Mary Lovejoy Heywood and Merritt Caldwell Fernald, a college professor at the University of Maine. Fernald attended Orono High School, during which time he decided that he wanted to become a botanist. He collected plants around Orono and published two botanical papers while still attending high school. Fernald attended Maine State College for a year, but began working as an assistant at the Gray Herba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernice Giduz Schubert
Bernice Giduz Schubert (October 6, 1913 – August 14, 2000) was an American botanist. Her academic career developed over 53 years as a professor and herbarium curator with Harvard University. She made many collection trips in Mexico and the United States. Early life and education Bernice Giduz Schubert was born in 1913, in Boston, Massachusetts and grew up in the Dorchester Community. She graduated from the Girls Latin School and earned an undergraduate degree at the Massachusetts College of Agriculture (1935), and graduate degrees at Radcliffe College (M. A. 1937, Ph.D. 1941). Career Dr. Schubert began her professional life working at the Gray Herbarium at Harvard. While there, she served as assistant to Merritt Fernald in compiling his ''Gray's Manual of Botany'' (1951) and ''Edible Wild Plants of Eastern North America'' (1958). She was awarded a Guggenheim Fellowship in 1949 to work on African plants in Belgium. Upon returning to America in 1952, Schubert worked for the Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
