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Phyllanthopsis
''Phyllanthopsis'' is a genus of flowering plants in the family Phyllanthaceae. It is one of the eight genera in the tribe Poranthereae. It has two species. The type species is '' Phyllanthopsis phyllanthoides''. ''Phyllanthopsis'' is native to Texas, Oklahoma and Mexico. It consists of monoecious or dioecious shrubs. ''Phyllanthopsis phyllanthoides'' had been placed in ''Leptopus'' or '' Andrachne'' and '' Phyllanthopsis arida'' had been placed in ''Andrachne''. In 2007, a molecular phylogenetic study showed that these two species did not belong in either of these genera because they formed a clade that is sister to a clade consisting of ''Leptopus'' and ''Actephila ''Actephila'' is a genus of plants in the family Phyllanthaceae, first described as a genus in 1826. It is one of 8 genera in the tribe Poranthereae, and is most closely related to '' Leptopus''. The name of the genus is derived from two Greek ...''.Maria S. Vorontsova, Petra Hoffmann, Olivier Maurin, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllanthopsis Phyllanthoides
''Phyllanthopsis phyllanthoides'', commonly called buckbrush or maidenbush, is a flowering plant in the family ''Phyllanthaceae''. It is native to Mexico (where it is found in Nuevo León Nuevo León () is a state in the northeast region of Mexico. The state was named after the New Kingdom of León, an administrative territory from the Viceroyalty of New Spain, itself was named after the historic Spanish Kingdom of León. With a ...) and the United States (where it is found primarily South Central region). Its natural habitat is on limestone or dolomite rock outcrops, particularly in seepy shelves along rivers, but also in upland areas such as glades and bluffs. Description ''Phyllanthopsis phyllanthoides'' is a shrub, growing up to three or four feet tall. It has entire, opposite, deciduous leaves. It is monoecious, although individuals often appear as if they are male or female. Flowers are produced from May to September. Its fruit is a capsule reaching up to 6.5 mm in d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllanthopsis Arida
''Phyllanthopsis arida'', the trans-Pecos maidenbush, is a rare plant species endemic to western Texas. ''Phyllanthopsis arida'' is a thornless, dioecious, deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ..., highly branching shrub up to 100 cm tall. Leaves are ovate to obovate, up to 1.0 cm long. Flower solitary or in small clusters, yellow-green, up to 3 mm in diameter. Capsule is hanging, up to 7 mm long.Correll, D. S. & M. C. Johnston. 1970. Manual of the Vascular Plants of Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson. References Phyllanthaceae Flora of Texas Dioecious plants {{Phyllanthaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrachne
''Andrachne'' is a genus of flowering plants in the family Phyllanthaceae described by Linnaeus in 1753. It is one of eight genera in the tribe Poranthereae. Maria S. Vorontsova and Petra Hoffmann. 2008. "A phylogenetic classification of tribe Poranthereae (Phyllanthaceae)." ''Kew Bulletin'' 63(1):41-59. They are monoecious herbs or subshrubs, native to semideserts and desert margins of the Americas, southern Europe, North Africa, and South Asia. Linnaeus took the name from Theophrastus, but it is not clear to which plant Theophrastus applied the name.Umberto Quattrocchi. 2000. ''CRC World Dictionary of Plant Names'' volume I, page 135. CRC Press: Boca Raton; New York; Washington, DC;, USA. London, UK. (vol. I) (see ''External links'' below).''Andrachne'' In: Index Nominum Genericorum. In: Regnum Vegetabile (see ''External links'' below). Actually, the etymology of the genus name corresponds to the Ancient Greek word (), meaning either "common purslane" (''Portulaca oleracea'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptopus
''Leptopus'', the maidenbushes, are a genus of plants in the family Phyllanthaceae native to southern Asia from the Caucasus east to China and Maluku. The plants are monoecious herbs and shrubs with simple, entire leaves and small, green flowers. ''Leptopus'' is one of eight genera in the tribe PoranthereaePetra Hoffmann, Hashendra S. Kathriarachchi, and Kenneth J. Wurdack. 2006. "A Phylogenetic Classification of Phyllanthaceae." ''Kew Bulletin'' 61(1):37-53. and comprises 9 species. Maria S. Vorontsova and Petra Hoffmann. 2008. "A phylogenetic classification of tribe Poranthereae (Phyllanthaceae)." ''Kew Bulletin'' 63(1):41-59. It is the sister of ''Actephila''. The type species is '' Leptopus cordifolius''.''Leptopus'' In: Index Nominum Genericorum. In: Regnum Vegetabile (see ''External links'' below). The name is derived from two Greek words, ''leptos'', "thin, slender, or small", and ''pous'', "foot", a reference to slender pedicels.Umberto Quattrocchi. 2000. ''CRC Wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poranthereae
Poranthereae is a tribe in the plant family Phyllanthaceae. It is one of ten tribes in the family, and one of four tribes in the subfamily Phyllanthoideae. Poranthereae comprises about 111 species, distributed into eight genera. The largest genera and the number of species in each are ''Actephila'' (31), ''Meineckia'' (30), and ''Andrachne'' (22). The tribe consists of herbs, shrubs, and small to medium trees. They have a cosmopolitan distribution, occurring on all continents, except Antarctica. The circumscription and classification of Poranthereae were substantially revised following phylogenetic analysis of DNA sequences from members of the family Phyllanthaceae. Within Poranthereae, groups of related genera are strongly correlated with habitat and geographical distribution. For example, ''Notoleptopus'', ''Pseudophyllanthus'', and ''Poranthera'' are restricted to the Old World Southern Hemisphere. Description Monoecious, sometimes dioecious herbs, shrubs, or trees to 6m ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllanthaceae
Phyllanthaceae is a family of flowering plants in the eudicot order Malpighiales. It is most closely related to the family Picrodendraceae.Kenneth J. Wurdack and Charles C. Davis. 2009. "Malpighiales phylogenetics: Gaining ground on one of the most recalcitrant clades in the angiosperm tree of life." ''American Journal of Botany'' 96(8):1551-1570. (see ''External links'' below) The Phyllanthaceae are most numerous in the tropics, with many in the south temperate zone, and a few ranging as far north as the middle of the north temperate zone.Petra Hoffman. 2007. "Phyllanthaceae" pages 250-252. In: Vernon H. Heywood, Richard K. Brummitt, Ole Seberg, and Alastair Culham. ''Flowering Plant Families of the World.'' Firefly Books: Ontario, Canada. . Some species of '' Andrachne'', ''Antidesma'', ''Margaritaria'', and ''Phyllanthus'' are in cultivation.Anthony J. Huxley, Mark Griffiths, and Margot Levy (editors). 1992. ''The New Royal Horticultural Society Dictionary of Gardening.'' T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Heinrich Adolf Scheele
George Heinrich Adolf Scheele (1808–1864) was a German botanist and 19th century explorer. He was an expert on spermatophytes Scheele was the first person to classify ''Cucurbita texana''. ;California An important part of his botanical specimen collections are stored in the Herbarium of the California Academy of Sciences in San Francisco, California San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17th .... ;Author abbreviation References {{DEFAULTSORT:Scheele, George Heinrich Adolf 19th-century German botanists 1808 births 1864 deaths Botanists active in North America People associated with the California Academy of Sciences ... [...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] |
Sister Taxon
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research
Research is "creativity, creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness to controlling sources of bias and error. These activities are characterized by accounting and controlling for biases. A research project may be an expansion on past work in the field. To test the validity of instruments, procedures, or experiments, research may replicate elements of prior projects or the project as a whole. The primary purposes of basic research (as opposed to applied research) are documentation, Discovery (observation), discovery, interpretation (philosophy), interpretation, and the research and development (R&D) of methods and systems for the advancement of human knowledge. Approaches to research depend on epistemology, epistemologies, which vary considerably both within and between humanities and sciences. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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