Thursday, October 11, 2012

Flowers..............

                  A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants(plants of the division Magnoliophyta, also called angiosperms).Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) or allow selfing (fusion of sperm and egg from the same flower). Some flowers produce diaspores without fertilization (parthenocarpy). Flowers contain sporangia and are the site where gametophytes develop. Flowers give rise to fruit and seeds. Many flowers have evolved to be attractive to animals, so as to cause them to be vectors for the transfer of pollen.

              Some flowers details are given below:
1.Dahlia

                   Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico, Central America, and Colombia. A member of the Asteraceae or Compositae, dicotyledonous plants, related species include the sunflower, daisy, chrysanthemum and zinnia. There are at least 36 species of dahlia, with hybrids commonly grown as garden plants. Flower forms are variable, with one head per stem; these can be as small as 2 in (5.1 cm) in diameter or up to 1 ft (30 cm) ("dinner plate"). This great variety results from dahlias being octoploids—that is, they have eight sets of homologous chromosomes, whereas most plants have only two. In addition, dahlias also contain many transposons - genetic pieces that move from place to place upon an allele - which contributes to their manifesting such great diversity.

2.Anthurium

                       Anthurium species, belonging to the arum family (Araceae). Anthurium can also be called "Flamingo Flower" or "Boy Flower", both referring to the structure of the spathe and spadix.TROPICOS lists 1901 types, although some of these are duplicates. It is one of the largest and probably the most complex genus of this family; certainly it is one of the most variable. Many species are undoubtedly not yet described and new ones are being found every year. The species has neotropical distribution; mostly in wet tropical mountain forest of Central America and South America, but some in semi-arid environments. Most species occur in Panama, Colombia, Brazil, the Guiana Shield and Ecuador. According to the work of noted aroid botanist Dr. Tom Croat of the Missouri Botanical Garden, no members of this genus are indigenous to Asia.

3.Hibiscus

                        Hibiscus is a genus of flowering plants in the mallow family, Malvaceae. It is quite large, containing several hundred species that are native to warm-temperate, subtropical and tropical regions throughout the world. Member species are often noted for their showy flowers and are commonly known as hibiscus, sorrel, and flor de Jamaica, or less widely known as rosemallow. The genus includes both annual and perennial herbaceous plants, as well as woody shrubs and small trees. The generic name is derived from the Greek word ἱβίσκος (hibískos), which was the name Pedanius Dioscorides (ca. 40-90) gave to Althaea.The leaves are alternate, ovate to lanceolate, often with a toothed or lobed margin.

4.lavender

                         The lavenders (botanic name Lavandula) is a genus of 39 species of flowering plants in the mint family, Lamiaceae. It is native to the Old World and is found from Cape Verde and Canary Islands, southern Europe across to northern and eastern Africa, the Mediterranean, south-west Asia to south-east India. Many members of the genus are cultivated extensively in temperate climates as ornamental plants for garden and landscape use, and also commercially for the extraction of essential oils.The genus includes herbaceous annual or short lived herbaceous perennial plants (the species from India), and suffruticose perennials, subshrubs or small shrubs across most of the rest of its distribution.Leaf shape is diverse across the genus.

5.Orkid
                      Orchidaceae - a plant family with an extraordinary diversity of species.Orchis, a genus of European Orchids, lent the name to the entire family.God's own flowers.The variety, rarity mysticism that surrounds the flower all contributes to the love, curiosity and love of people around the world.Perennial plants which are members of the largest family of plants - Orchidaceae are known as Orchids. It is estimated that there are about 25,000 species of orchids in the wild. Relatively young age of the genus can be the reason for this astonishingly high number of species.Loss of habitat has led to considerable decline of orchid population in the wild but fortunatly among plants Orchids in particular have become highly sought after flowers, gardeners and lay admirers cultivate them in greenhouses and households in cooler regions.

6.Michelia
                   Michelia is a genus of flowering plants belonging to the Magnolia family (Magnoliaceae). The genus includes about 50 species of evergreen trees and shrubs, native to tropical and subtropical south and southeast Asia (Indomalaya), including southern ChinaThe Magnoliaceae are an ancient family; fossil plants identifiably belonging to the Magnoliaceae back date back 95 million years. A primitive aspect of the Magnolia family is that their large, cup-shaped flowers lack distinct petals or sepals. The large non-specialized flower parts, resembling petals, are called tepals.The leaves, flowers, and form of Michelia resemble Magnolia, but the blossoms of Michelia generally form clusters among the leaves, rather than singly at the branch ends as Magnolia does.

7.Chendumally
                         The common Marigold is familiar to everyone, with its pale-green leaves and golden orange flowers. The color of Chendumally range from lemon, yellow, bright yellow, golden to orange. They are very much used in making garlands for temple decoration.Malli is best when it is worn in the evenings – that is the time when the buds open. If we are passionate about malli we have to follow its clock and not our own. I know many who put malli into plastic bags in the evenings and keep it in refrigerator. They take it out in the mornings and offer it to the gods or wear it on their hairs after the have their morning bath, just before going out for work. The mallis are dead by then, the stems shrink and the flowers fall away from the strand.

8.Bamboo
                  Bamboo is a group of perennial evergreens in the true grass family Poaceae, subfamily Bambusoideae, tribe Bambuseae. Giant bamboos are the largest members of the grass family. In bamboo, the internodal regions of the stem are hollow and the vascular bundles in the cross section are scattered throughout the stem instead of in a cylindrical arrangement. The dicotyledonous woody xylem is also absent. The absence of secondary growth wood causes the stems of monocots, even of palms and large bamboosto be columnar rather than tapering.Bamboos are some of the fastest growing plants in the world, due to a unique rhizome-dependent system. Bamboos are of notable economic and cultural significance in South Asia, South East Asia and East Asia, being used for building materials, as a food source, and as a versatile raw product.



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