Tuesday, March 13, 2012
Monday, March 5, 2012
The generic name derives from ακακία (akakia), the name given by early Greek botanist-physician Pedanius Dioscorides (ca. 40-90) to the medicinal tree A. nilotica in his book Materia Medica.This name derives from the Greek word for its characteristic thorns, ακις (akis, thorn).The species name nilotica was given by Linnaeus from this tree's best-known range along the Nile river.
Acacias are also known as thorntrees, whistling thorns or wattles, including the yellow-fever acacia and umbrella acacias.
The genus Acacia previously contained roughly 1300 species, about 960 of them native to Australia, with the remainder spread around the tropical to warm-temperate regions of both hemispheres, including Europe, Africa, southern Asia, and the Americas. However, in 2005 the genus was divided into five separate genera. The name Acacia was retained for the majority of the Australian species and a few in tropical Asia, Madagascar and Pacific Islands. Most of the species outside Australia, and a small number of Australian species, were reclassified into Vachellia and Senegalia. The two final genera, Acaciella and Mariosousa, only contain about a dozen species from the Americas each.
Sunday, March 4, 2012
LOTUS
Nelumbo is a genus of aquatic plants with large, showy flowers resembling water lilies, commonly known as lotus. The generic name is derived from the Sinhalese word Nelum. There are only two known living species in the genus. The sacred lotus (N. nucifera) is native to Asia, and is the better known of the two. It is commonly cultivated, and also used in Chinese medicine and cooking. This species is the national flower of Egypt, India and Vietnam. The American lotus (N. lutea) is native to North America and the Caribbean. Horticultural hybrids have been produced between these two geographically separated species. A third, extinct species, N. aureavallis, is known from Eocene fossils from North Dakota, United States.
Saturday, March 3, 2012
Star of Bethlehem,
In Christian tradition, the Star of Bethlehem, also called the Christmas Star, revealed the birth of Jesus to the magi, and later led them to Bethlehem. The star appears in the nativity story of the Gospel of Matthew, where magi "from the east" are inspired by the star to travel to Jerusalem.There they meet King Herod of Judea, and ask where the king of the Jews had been born. Herod, following a verse from the Book of Micah interpreted as a prophecy, directs them to Bethlehem, a nearby village. The star leads them to Jesus' house in Bethlehem, where they pay him obeisance, or respect, and give him gifts. The wise men were then given divine warning not to return to Herod so they return to their "own country" by a different route.
Many Christians see the star as a miraculous sign to mark the birth of the Christ (or messiah). Some theologians claimed that the star fulfilled a prophecy, known as the Star Prophecy.Astronomers have made several attempts to link the star to unusual astronomical events, such as a conjunction of Jupiter and Saturn, a comet or a supernova.
Prominent scholars question the historical accuracy of the story and argue that the star was a pious fiction created by the author of the Gospel of Matthew.
The subject is a favorite at planetarium shows during the Christmas season, although the Biblical account suggests that the visit of the magi took place at least several months after Jesus was born.[nb 1] The visit is traditionally celebrated on Epiphany (January 6) in Western Christianity.The star often appears in representations of the manger scene found in Luke, although the star and the wise men do not appear in Luke's nativity story.
Many Christians see the star as a miraculous sign to mark the birth of the Christ (or messiah). Some theologians claimed that the star fulfilled a prophecy, known as the Star Prophecy.Astronomers have made several attempts to link the star to unusual astronomical events, such as a conjunction of Jupiter and Saturn, a comet or a supernova.
Prominent scholars question the historical accuracy of the story and argue that the star was a pious fiction created by the author of the Gospel of Matthew.
The subject is a favorite at planetarium shows during the Christmas season, although the Biblical account suggests that the visit of the magi took place at least several months after Jesus was born.[nb 1] The visit is traditionally celebrated on Epiphany (January 6) in Western Christianity.The star often appears in representations of the manger scene found in Luke, although the star and the wise men do not appear in Luke's nativity story.
Iris is a genus of 260-300 species of flowering plants with showy flowers. It takes its name from the Greek word for a rainbow, referring to the wide variety of flower colors found among the many species. As well as being the scientific name, iris is also very widely used as a common name for all Iris species, though some plants called thus belong to other closely related genera. A common name for some species is 'flags', while the plants of the subgenus Scorpiris are widely known as 'junos', particularly in horticulture. It is a popular garden flower.
The genera Belamcanda (blackberry lily), Hermodactylus (snake's head iris), Neomarica (walking iris) and Pardanthopsis are sometimes included in Iris.
Dahlia
Lilium is a genus of herbaceous flowering plants growing from bulbs, all with large prominent flowers. They comprise a genus of about 110species in the lily family Liliaceae. Most species are native to the temperate northern hemisphere, though the range extends into the northern subtropics.
Lilies form an important group of flowering garden plants, and are important culturally and in literature in much of the world. Some species are sometimes grown or harvested for the edible bulbs.
The species in this genus are the true lilies. Many other plants exist with "lily" in the common English name, some of which are quite unrelated to the true lilies.
Subscribe to:
Posts (Atom)