Hoa Thủy Tiên – Narcissus – Daffodil Tasuwka39;s Blog

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 being used to describe all or some members of the genus. Narcissus has conspicuous flowers with six petal-like tepals surmounted with a cup- or trumpet-shaped corona. The flowers are usually white or yellow (orange or red in garden kinds), with either even or contrasting coloured tepals and corona.

Narcissus were popular in early civilisation, both medicinally and botanically, but formally detailed by Linnaeus in his Varieties Plantarum (1753). The genus is generally considered to have about ten sections with approximately 50 species. The true quantity of varieties has mixed, depending on how they are classified, as a consequence to similarity between hybridization and kinds. The genus arose some time in the Late Oligocene to Early Miocene epochs, in the Iberian peninsula and adjacent regions of southwest Europe. The exact source of the real name Narcissus is undiscovered, but it is linked to a Greek phrase for intoxicated (narcotic) and the myth of the children of that 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 species are local to meadows and woods in southern European countries and North Africa with a centre of diversity in the European Mediterranean, the Iberian peninsula particularly. Both cultivated and wild plants have naturalised widely, and were released into the Far East to the tenth century prior. 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 grown to be extinct, while some are threatened by increasing tourism and urbanisation.

Historical accounts suggest narcissi have been cultivated from the initial times, but became ever more popular in Europe after the 16th century and by the later 19th hundred years were an important commercial crop centred mostly on holland. Narcissi are popular as chop flowers so when ornamental crops in private and general public gardens today. The long history of breeding has resulted in a large number of different cultivars. For horticultural purposes, narcissi are labeled into divisions, covering an array of shapes and colours. Like other members of their family, narcissi create a number of different alkaloids, which provide some protection for the plant, but may be poisonous if ingested accidentally. This property has been exploited for medicinal use within traditional healing and has resulted in the production of galantamine for the treating Alzheimer's dementia. Long celebrated in art and books, narcissi are associated with a number of themes in different cultures, ranging from loss of life to good fortune, and as icons of spring. The daffodil is the nationwide flower of Wales and the mark of tumor charities in many countries. The appearance of the wild flowers in springtime is associated with festivals in many places.

Narcissus is a genus of perennial herbaceous bulbiferous geophytes, dying again after flowering to an underground storage bulb. They regrow in the next season from brown-skinned ovoid bulbs with pronounced necks, and reach heights of 5-80 cm with regards to the species. Dwarf varieties such as N. asturiensis have a maximum level of 5-8 cm, while Narcissus tazetta might increase as large as 80 cm.

The plants are scapose, having an individual central leafless hollow rose stem (scape). Several green or blue-green, small, strap-shaped leaves occur from the light. The flower stem bears a solitary blossom, but once in a while a cluster of blossoms (umbel). The plants, which are conspicuous and white or yellowish usually, both or hardly ever renewable sometimes, consist of a perianth of three parts. Closest to the stem (proximal) is a floral pipe above the ovary, then an external ring made up of six tepals (undifferentiated sepals and petals), and a central disk to conical formed corona. The plants may hang down (pendent), or be erect. You will discover six pollen bearing stamens bordering a central style. The ovary is substandard (below the floral parts) comprising three chambers (trilocular). The berry consists of a dried capsule that splits (dehisces) launching numerous black seed products.

The bulb lays dormant after the leaves and rose stem die back and has contractile roots that yank it down further in to the soil. The rose stem and leaves form in the light, to emerge the next season. Most species are dormant from summer time to past due winter, flowering in the springtime, though a few types are autumn flowering.

Narcissus Pictures