Nemesis Wikipedia, ang malayang ensiklopedya

Narcissus /n?:r's?s?s/ is a genus of mostly spring perennial crops in the Amaryllidaceae (amaryllis) family. Various common titles including daffodil,[notes 1] daffadowndilly,[3] narcissus, and jonquil are used to describe all or some known members of the genus. Narcissus has conspicuous flowers with six petal-like tepals surmounted by way of a cup- or trumpet-shaped corona. The bouquets are usually white or yellowish (orange or pink in garden varieties), with either uniform or contrasting colored corona and tepals.

Narcissus were well known in old civilisation, both and botanically medicinally, but formally defined by Linnaeus in his Varieties Plantarum (1753). The genus is generally considered to have about ten areas with about 50 species. The amount of varieties has assorted, depending about how they are classified, a consequence of to similarity between hybridization and species. The genus arose some right time in the Late Oligocene to Early Miocene epochs, in the Iberian peninsula and adjacent regions of southwest Europe. The precise origin of the name Narcissus is anonymous, but it is linked to a Greek expression for intoxicated (narcotic) and the myth of the youth of that name who fell in love with his own representation. The English phrase 'daffodil' is apparently produced from "asphodel", with which it was compared commonly.

The species are local to meadows and woods in southern Europe and North Africa with a centre of variety in the European Mediterranean, particularly the Iberian peninsula. Both wild and cultivated plants have naturalised widely, and were introduced in to the Far East prior to the tenth century. Narcissi have a tendency to be long-lived bulbs, which propagate by division, but are also insect-pollinated. Known pests, diseases and disorders include viruses, fungi, the larvae of flies, mites and nematodes. Some Narcissus species have become extinct, while others are threatened by increasing tourism and urbanisation.

Historical accounts suggest narcissi have been cultivated from the earliest times, but became increasingly popular in Europe following the 16th century and by the later 19th hundred years were an important commercial crop centred mostly on the Netherlands. Narcissi are popular as chop bouquets and since ornamental crops in private and general public gardens today. The long history of breeding has led to a large number of different cultivars. For horticultural purposes, narcissi are categorised into divisions, covering an array of shapes and colours. Like other members of these family, narcissi create a true number of different alkaloids, which provide some protection for the plant, but may be poisonous if accidentally ingested. This property has been exploited for medicinal used in traditional healing and has led to the production of galantamine for the treatment of Alzheimer's dementia. Long celebrated in fine art and books, narcissi are associated with a number of themes in several cultures, ranging from loss of life to fortune, and as symbols of planting season. The daffodil is the national rose of Wales and the mark of cancer charities in many countries. The appearance of the crazy flowers in springtime is associated with celebrations in many places.

Narcissus is a genus of perennial herbaceous bulbiferous geophytes, dying back after flowering to a underground storage bulb. They regrow in the following season from brown-skinned ovoid bulbs with pronounced necks, and reach levels of 5-80 cm with respect to the species. Dwarf kinds such as N. asturiensis have a maximum level of 5-8 cm, while Narcissus tazetta may expand as high as 80 cm.

The plant life are scapose, having an individual central leafless hollow bloom stem (scape). Several blue-green or green, small, strap-shaped leaves come up from the light bulb. The vegetable stem usually bears a solitary bloom, but occasionally a cluster of blossoms (umbel). The blossoms, that happen to be conspicuous and white or yellow usually, both or rarely inexperienced sometimes, consist of a perianth of three parts. Closest to the stem (proximal) is a floral tube above the ovary, then an external ring made up of six tepals (undifferentiated sepals and petals), and a central disc to conical designed corona. The plants may suspend down (pendent), or be erect. You will find six pollen bearing stamens encompassing a central style. The ovary is poor (below the floral parts) comprising three chambers (trilocular). The super fruit involves a dried capsule that splits (dehisces) releasing numerous black seeds.

The bulb lays dormant after the leaves and blossom stem die back and has contractile roots that take it down further into the soil. The flower leaves and stem form in the light bulb, to emerge the following season. Most kinds are dormant from summer time to overdue winter, flowering in the planting season, though a few varieties are fall flowering.

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31 January 2013 selection: narcissus, daffodil, iris, fern » Flowers