Accueil gt; Mentalisme gt; Narcissus by Chris Philpott

Narcissus /n?:r's?s?s/ is a genus of mainly spring perennial plants in the Amaryllidaceae (amaryllis) family. Various common brands 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 plants are usually white or yellowish (orange or red in garden varieties), with either even or contrasting colored corona and tepals.

Narcissus were popular in old civilisation, both and botanically medicinally, but formally defined by Linnaeus in his Species Plantarum (1753). The genus is normally thought to have about ten portions with approximately 50 species. The amount of kinds has mixed, depending about how they are categorized, due to similarity between hybridization and types. The genus arose a while in the Late Oligocene to Early Miocene epochs, in the Iberian peninsula and adjacent regions of southwest Europe. The precise source of the name Narcissus is unidentified, but it is linked to a Greek word for intoxicated (narcotic) and the misconception of the children of that name who fell in love with his own representation. The English term 'daffodil' appears to be produced from "asphodel", with which it was commonly likened.

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

Historical accounts suggest narcissi have been cultivated from the initial times, but became increasingly popular in Europe after the 16th hundred years and by the later 19th century were an important commercial crop centred primarily on the Netherlands. Today narcissi are popular as cut plants so when ornamental vegetation in private and general public gardens. The long history of breeding has led to thousands of different cultivars. For horticultural purposes, narcissi are categorised into divisions, covering an array of shapes and colours. Like other members of their family, narcissi produce 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 use in traditional healing and has led to the production of galantamine for the treating Alzheimer's dementia. Long celebrated in books and skill, narcissi are associated with a true number of themes in various cultures, ranging from fatality to fortune, and as symbols of spring. The daffodil is the nationwide bloom of Wales and the sign of cancers charities in many countries. The appearance of the wild flowers in spring and coil is associated with celebrations in many places.

Narcissus is a genus of perennial herbaceous bulbiferous geophytes, dying back again after flowering to the underground storage bulb. They regrow in the next 12 months from brown-skinned ovoid bulbs with pronounced necks, and reach levels of 5-80 cm depending on species. Dwarf species such as N. asturiensis have a maximum elevation of 5-8 cm, while Narcissus tazetta might develop as extra tall as 80 cm.

The vegetation are scapose, having a single central leafless hollow blossom stem (scape). Several green or blue-green, thin, strap-shaped leaves happen from the light bulb. The place stem bears a solitary bloom, but occasionally a cluster of bouquets (umbel). The bouquets, which can be usually conspicuous and white or yellow, both or hardly ever renewable sometimes, contain a perianth of three parts. Closest to the stem (proximal) is a floral tube above the ovary, then an outer ring composed of six tepals (undifferentiated sepals and petals), and a central disc to conical formed corona. The bouquets may hang up down (pendent), or be erect. There are six pollen bearing stamens adjoining a central style. The ovary is poor (below the floral parts) consisting of three chambers (trilocular). The fruits contains a dried capsule that splits (dehisces) launching numerous black seed products.

The bulb is dormant following the leaves and flower stem die back again and has contractile roots that take it down further in to the soil. The rose leaves and stem form in the light, to emerge the next season. Most kinds are dormant from warmer summer months to later winter, flowering in the spring and coil, though a few species are autumn flowering.

Narcissus Pictures

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