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Maurandya Wislizeni 12May07 9239
''Maurandya'' is a genus of flowering plants in the family Plantaginaceae, native to Mexico and the south west United States (from California to central Texas). They sprawl or climb by means of twining leaf stalks. One of the four species, ''Maurandya barclayana'', is widely cultivated as an ornamental plant. The generic name is often misspelt as ''Maurandia''. Two of its species have at times been placed in the genera ''Epixiphium'' and ''Maurandella''. Description The species of ''Maurandya'' are either herbaceous perennials with fibrous roots or, in the case of '' M. wislizeni'', an annual with a tap root. All are sprawlers or climbers, climbing by means of twining leaf stalks ( petioles). The leaves are shaped like broad or narrow arrowheads, more rarely heart-shaped. The flower stalks ( peduncles) grow upwards and bear solitary flowers. The more-or-less triangular sepals are not joined together but jointly form an urn-shaped structure around the base of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maurandya Barclayana
''Maurandya barclayana'' (syn. ''Asarina barclayana''; orth. var. ''M. barclaiana''), commonly called angels trumpet or Mexican viper, is an ornamental plant in the family Plantaginaceae native to Mexico. This plant is cited in ''The movements and habits of climbing plants'' by Charles Darwin. Description Growing to in height, this herbaceous perennial climber has ivy-like leaves and white, pink or purple tubular flowers that occur in spring and summer. It is a climbing, fibrous-rooted perennial with stems usually having adventitious roots. Its lamina leaves that are triangular-cordate or triangular-hastate, 1–3.5 cm in length and 8–30 mm wide. The apex is acute to attenuate. Basal lobes are acute or undiscerning, with some margins, and small teeth towards the base. It is palmately veined and has a petiole that is 1–1.5 cm long. Peduncles are 2–5 cm long. Sepals are long and simple, which are 10–15 mm long in flower and 20 mm long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament and an anther which contains ''sporangium, microsporangia''. Most commonly anthers are two-lobed and are attached to the filament either at the base or in the middle area of the anther. The sterile tissue between the lobes is called the connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther. A pollen grain develops from a microspore in the microsporangium and contains the male gametophyte. The stamens in a flower are collectively called the androecium. The androecium can consist of as few as one-half stamen (i.e. a single locule) as in ''Canna (plant), Canna'' species or as many as 3,482 stamens which have been counted in the saguaro (''Carnegiea gigantea'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asarina
''Asarina'' is a flowering plant genus of only one species, ''Asarina procumbens Mill.'' Search for "Asarina", the trailing snapdragon, which is native to France and Spain and introduced in Germany, Switzerland, Austria and Hungary. Originally placed in the Scrophulariaceae (figwort family), the genus has more recently been moved to the Plantaginaceae (plantain family). Species from North America formerly placed in the genus ''Asarina'' are now placed in '' Holmgrenanthe'', ''Lophospermum'', '' Mabrya'' and ''Maurandya'', as well as '' Neogaerrhinum''. ''Asarina'' is now regarded as exclusively an Old World genus. Description The single remaining species of the now monotypic genus, ''A. procumbens'' is a foetid, strongly pubescent, viscid subshrub of trailing/mat-forming habit reaching a height of only 10-20cm. The somewhat woody main stems give rise to lax creeping/cascading stems bearing opposite, long-petioled, hairy, lobed, reniform-to-cordate leaves with crenate and often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymbalaria
''Cymbalaria'' is a genus of about 10 species of herbaceous perennial plants previously placed in the family Scrophulariaceae, but recently shown by genetic research to be in the much enlarged family Plantaginaceae. The genus is native to southern Europe. It is closely related to the genera ''Linaria'' and ''Antirrhinum'', differing in having creeping growth and flowers borne singly rather than in dense erect spikes. The common name toadflax is shared with ''Linaria'' and other related genera. The scientific name means "resembling a cymbal" for the somewhat rounded leaves. By far the best known species is ''Cymbalaria muralis'' (also called ivy-leaved toadflax, and Kenilworth ivy), native to southwest Europe. It has widely naturalised elsewhere and is commonly sold as a garden plant. ''C. muralis'' characteristically grows in sheltered crevices in walls and pathways, or in rocks and scree, making a trailing or scrambling plant up to 1 m long. Species list Accepted species are: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics
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 frame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wayne J
Wayne may refer to: People with the given name and surname * Wayne (given name) * Wayne (surname) Geographical Places with name ''Wayne'' may take their name from a person with that surname; the most famous such person was Gen. "Mad" Anthony Wayne from the former Northwest Territory during the American revolutionary period. Places in Canada * Wayne, Alberta Places in the United States Cities, towns and unincorporated communities: * Wayne, Illinois * Wayne City, Illinois * Wayne, Indiana * Wayne, Kansas * Wayne, Maine * Wayne, Michigan * Wayne, Nebraska * Wayne, New Jersey * Wayne, New York * Wayne, Ohio * Wayne, Oklahoma * Wayne, Pennsylvania * Wayne, West Virginia * Wayne, Lafayette County, Wisconsin * Wayne, Washington County, Wisconsin ** Wayne (community), Wisconsin Other places: * Wayne County (other) * Wayne Township (other) * Waynesborough, Gen. Anthony Wayne's early homestead in Pennsylvania * Wayne National Forest in southe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodochiton
''Rhodochiton'' is a genus of flowering plants within the family Plantaginaceae, native to southern Mexico and neighbouring Guatemala. They climb by means of twining leaf stalks. One of the three species, '' Rhodochiton atrosanguineus'', the purple bell vine, is grown as an ornamental plant. All three species are sometimes included in ''Lophospermum''. Description ''Rhodochiton'' species are herbaceous perennials. They have long climbing or sprawling stems, branching and becoming woody at the base with age. They cling by means of twining leaf stalks ( petioles). Their leaves are more or less heart-shaped, with pointed ends. The solitary flowers are carried on relatively long stalks ( peduncles) that are pendant, causing the flowers to hang downwards. The sepals, usually tinted rose or purple, are joined at the base and together form an expanded bell shape around the flower. The five petals are joined at the base to form a tube, light purple at the base and dark purple towards t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mabrya
''Mabrya'' is a genus of flowering plants in the plantain family, Plantaginaceae. It consists of herbaceous perennials with brittle upright or drooping stems, found in dry areas of Mexico and the southern United States. Description Species of ''Mabrya'' are herbaceous perennials with fibrous roots. They have brittle stems, usually pendant and forming mats, although more upright in ''M. erecta''. The stems branch and become woody at the base with age. Unlike related genera, such as ''Maurandya'' and ''Lophospermum'', the leaf stalks ( petioles) are straight and do not twine. The leaves are rounded or kidney shaped, generally with broad, somewhat rounded teeth. The flowers are borne individually on stalks ( peduncles) that are usually horizontal or ascending. The sepals are joined at the base; where their margins become free, they curve back on themselves. Together the sepals form an urn-shaped calyx. The flowers consist of five petals joined at the base to form a tube. The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lophospermum
''Lophospermum'' is a genus of herbaceous perennial climbers or scramblers, native to mountainous regions of Mexico and Guatemala. Those that climb use twining leaf stalks. Their flowers are tubular, in shades of red, violet and purple, the larger flowers being pollinated by hummingbirds. Now placed in the greatly expanded family Plantaginaceae, the genus was traditionally placed in the Scrophulariaceae. The close relationship with some other genera, particularly ''Maurandya'' and '' Rhodochiton'', has led to confusion over the names of some species. '' Lophospermum erubescens'' and '' Lophospermum scandens'' are cultivated as ornamental plants, as climbers or trailers. Various ''Lophospermum'' cultivars are grown, often under trade names such as "Lofos®". Description ''Lophospermum'' species are herbaceous perennial climbers with fibrous roots. They climb by means of twining leaf stalks ( petioles) rather than tendrils or twining stems. The long stems are branched, becoming wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikolaus Joseph Von Jacquin
Nikolaus Joseph Freiherr von Jacquin (16 February 172726 October 1817) was a scientist who studied medicine, chemistry and botany. Biography Born in Leiden in the Netherlands, he studied medicine at Leiden University, then moved first to Paris and afterward to Vienna. In 1752, he studied under Gerard van Swieten in Vienna. Between 1755 and 1759, Jacquin was sent to the West Indies, Central America, Venezuela and New Granada by Francis I to collect plants for the Schönbrunn Palace, and amassed a large collection of animal, plant and mineral samples. In 1797, Alexander von Humboldt profited from studying these collections and conversing with Jacquin in preparation of his own journey to the Americas. In 1763, Jacquin became professor of chemistry and mineralogy at the Bergakademie Schemnitz (now Banská Štiavnica in Slovakia). In 1768, he was appointed Professor of Botany and Chemistry and became director of the botanical gardens of the University of Vienna. For his work ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Illegitimum
''Nomen illegitimum'' (Latin for illegitimate name) is a technical term, used mainly in botany. It is usually abbreviated as ''nom. illeg.'' Although the International Code of Nomenclature for algae, fungi, and plants uses Latin terms for other kinds of name (e.g. ''nomen conservandum'' for " conserved name"), the glossary defines the English phrase "illegitimate name" rather than the Latin equivalent.''Melbourne Code''Glossary/ref> However, the Latin abbreviation is widely used by botanists and mycologists. A superfluous name is often an illegitimate name. Again, although the glossary defines the English phrase, the Latin equivalent ''nomen superfluum'', abbreviated ''nom. superfl.'' is widely used by botanists. Definition A ''nomen illegitimum'' is a validly published name, but one that contravenes some of the articles laid down by the International Botanical Congress. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
