Dandelion is also known by its genera name Taraxacum. Dandelion flower head comprises of many tiny flowers. The Dandelion is spread mostly Europe and Asia. In Northern areas and places where the dandelion is not innate , it reproduces. Dandelion ( Taraxacum ) is a large genus of flowering plants in the family Asteraceae. They are tap-rooted biennial or perennial herbaceous plants, inhibit to temperate areas of the Northern Hemisphere of the Old World . They are known as pests or weeds to the common person.
Dandelions are used as food plants by the larvae of some varieties of Lepidoptera. The leaves are 5-25 cm long, simple and rudimentary, entire or lobed, forming a rosette above the central taproot. As the leaves grow ostensive they push down the surrounding vegetation, such as grass in a lawn, killing the vegetation by cutting off the sunlight. A bright yellow flower head (that is open in the daytime but closes at night) is borne solely on a hollow stem (scape) which rises 4-30 cm above the leaves and exudes a milky sap ( latex ) when broken. A rosette may produce several flowering stems at a time. The flower head is 2-5 cm in diameter and consists totally of ray florets.
Dandelion can be managed in commercial orchards through summer cultivations or by maintaining a emulous cover crop. Glyphosate is often used to scrape treat individual plants.
Dandelions are especially well-adapted to a courant world of "disturbed habitats," such as lawns and sunny, open places. Genus is taxonomically very labyrinthine, with numerous macrospecies, and polyploidy is also common; over 250 species. They were even heralded into the Midwest from Europe to provide food for the imported honeybees in early spring. They now grow virtually worldwide.
Few species drop the "parachute" (called a pappus , modified sepals) from the achenes. Between the pappus and the achene, there is a stalk called a beak, that protracts as the fruit matures. Some botanists take a much insular viewpoint, and only accept a total of about 60 species.
Flower matures are normally distributed by wind, carrying away the seed-containing achenes. The flower head is girdled by bracts (sometimes mistakenly called sepals) in two series. The inner bracts are pitch until the seeds mature, then flex down to allow the seeds to disperse; the outer bracts are always reflexed downward. The beak breaks off from the achene utterly easily. Blows required to entirely rid the clock of its seeds is deemed to be dependent on the time of day.