giống hoa gt; Củ giống hoa Thủy Tiên nhiều nhánh Narcissus

Narcissus /n?:r's?s?s/ is a genus of predominantly 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 a cup- or trumpet-shaped corona. The bouquets are generally white or yellow (orange or green in garden varieties), with either even or contrasting coloured corona and tepals.

Narcissus were popular in ancient civilisation, both and botanically medicinally, but formally defined by Linnaeus in his Varieties Plantarum (1753). The genus is generally considered to have about ten portions with roughly 50 species. The amount of types has mixed, depending about how they are categorized, credited to similarity between types and hybridization. The genus arose some right amount of time in the Late Oligocene to Early Miocene epochs, in the Iberian peninsula and adjacent regions of southwest Europe. The exact origin of the real name Narcissus is undiscovered, but it is often linked to a Greek expression for intoxicated (narcotic) and the myth of the youngsters of this name who fell in love with his own representation. The English expression 'daffodil' appears to be produced from "asphodel", with which it was commonly compared.

The kinds are indigenous to meadows and woods in southern Europe and North Africa with a centre of variety in the American Mediterranean, particularly the Iberian peninsula. Both cultivated and wild plants have naturalised widely, and were introduced into the Far East before the tenth century. Narcissi tend 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, nematodes and mites. Some Narcissus species have grown to be 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 following the 16th century and by the past due 19th hundred years were an important commercial crop centred mostly on the Netherlands. Today narcissi are popular as lower blooms so when ornamental plants in private and open public gardens. The long history of breeding has resulted in thousands of different cultivars. For horticultural purposes, narcissi are classified into divisions, covering a variety of colours and shapes. Like other members with their family, narcissi produce a true number of different alkaloids, which provide some protection for the plant, but may be poisonous if ingested unintentionally. This property has been exploited for medicinal use within traditional healing and has led to the production of galantamine for the treatment of Alzheimer's dementia. Long celebrated in artwork and books, narcissi are associated with a number of themes in various cultures, ranging from loss of life to fortune, and as symbols of springtime. The daffodil is the national bloom of Wales and the symbol of cancer charities in many countries. The looks of the untamed flowers in planting season is associated with celebrations in many places.

Narcissus is a genus of perennial herbaceous bulbiferous geophytes, dying back again after flowering to a underground storage light. They regrow in the following season 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 height of 5-8 cm, while Narcissus tazetta may expand as high as 80 cm.

The plant life are scapose, having a single central leafless hollow rose stem (scape). Several blue-green or green, slim, strap-shaped leaves occur from the light bulb. The herb stem usually bears a solitary bloom, but occasionally a cluster of plants (umbel). The bouquets, which are usually conspicuous and white or yellow, sometimes both or almost never inexperienced, consist of a perianth of three parts. Closest to the stem (proximal) is a floral tube above the ovary, then an external ring composed of six tepals (undifferentiated sepals and petals), and a central disk to conical formed corona. The plants may hang down (pendent), or be erect. There are six pollen bearing stamens encircling a central style. The ovary is second-rate (below the floral parts) consisting of three chambers (trilocular). The fruit involves a dry capsule that splits (dehisces) liberating numerous black seeds.

The bulb is situated dormant after the leaves and flower stem die again and has contractile origins that draw it down further in to the soil. The rose stem and leaves form in the light bulb, to emerge the following season. Most types are dormant from summer time to past due winter, flowering in the planting season, though a few kinds are autumn flowering.

Narcissus Pictures

giống hoa Thủy Tiên nhiều nhánh Narcissus giá rẻ nhất

സ്മൃതിപുരാണം : Etho janma kalpanayil

đẹp hoa Thủy Tiên, Tú Cầu Nha dep cay canh trên EVA.VN

mixed yellow white and orange yellow daffodils.