xaverii fern casado 1991 narcissus tazetta narcissus tazetta

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

Narcissus were popular in historical civilisation, both and botanically medicinally, but formally defined by Linnaeus in his Types Plantarum (1753). The genus is generally thought to have about ten portions with approximately 50 species. The true range of varieties has mixed, depending how they are categorised, anticipated to similarity between species and hybridization. The genus arose time in the Late Oligocene to Early Miocene epochs, in the Iberian peninsula and adjacent areas of southwest Europe. The exact source of the true name Narcissus is unfamiliar, but it is associated with a Greek expression for intoxicated (narcotic) and the myth of the children of this name who fell in love with his own reflection. The English term 'daffodil' appears to be produced from "asphodel", with which it was commonly compared.

The varieties are native to meadows and woods in southern Europe and North Africa with a center of diversity in the American Mediterranean, the Iberian peninsula particularly. Both cultivated and wild plants have naturalised widely, and were introduced into 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, disorders and diseases include viruses, fungi, the larvae of flies, nematodes and mites. Some Narcissus species have become extinct, while some are threatened by increasing urbanisation and tourism.

Historical accounts suggest narcissi have been cultivated from the initial times, but became ever more popular in Europe after the 16th hundred years and by the later 19th hundred years were an important commercial crop centred primarily on holland. Narcissi are popular as lower plants so that as ornamental plant life in private and public gardens today. The long history of breeding has led to a large number of different cultivars. For horticultural purposes, narcissi are labeled into divisions, covering a variety of colours and shapes. Like other members of their family, narcissi produce a 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 literature, narcissi are associated with a number of themes in different cultures, ranging from fatality to good fortune, and as symbols of planting season. The daffodil is the national blossom of Wales and the icon of malignancy charities in many countries. The appearance of the crazy flowers in spring and coil is associated with celebrations in many places.

Narcissus is a genus of perennial herbaceous bulbiferous geophytes, dying back after flowering to the underground storage bulb. They regrow in the next calendar year from brown-skinned ovoid lights with pronounced necks, and reach heights of 5-80 cm depending on species. Dwarf varieties such as N. asturiensis have a maximum height of 5-8 cm, while Narcissus tazetta might develop as extra tall as 80 cm.

The vegetation are scapose, having an individual central leafless hollow flower stem (scape). Several green or blue-green, narrow, strap-shaped leaves come up from the light. The flower stem bears a solitary flower, but occasionally a cluster of blooms (umbel). The flowers, which are usually conspicuous and white or yellowish, sometimes both or almost never green, consist of a perianth of three parts. Closest to the stem (proximal) is a floral tube above the ovary, then an outside ring composed of six tepals (undifferentiated sepals and petals), and a central disc to conical molded corona. The flowers may suspend down (pendent), or be erect. There are six pollen bearing stamens surrounding a central style. The ovary is second-rate (below the floral parts) comprising three chambers (trilocular). The berry consists of a dry out capsule that splits (dehisces) liberating numerous black seed products.

The bulb is dormant following the leaves and flower stem die back and has contractile root base that take it down further in to the soil. The rose leaves and stem form in the light bulb, to emerge the following season. Most kinds are dormant from summer time to past due winter, flowering in the planting season, though a few types are fall flowering.

Narcissus Pictures

Garden Living: Botanisk hage Gøteborg 2012 Drivhuset

Alle narcissen Narcissen : Ja