Narcissus /n?:r's?s?s/ is a genus of mostly spring perennial plants in the Amaryllidaceae (amaryllis) family. Various common names 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 by a cup- or trumpet-shaped corona. The bouquets are usually white or yellowish (orange or green in garden kinds), with either even or contrasting colored tepals and corona.
Narcissus were popular in traditional civilisation, both medicinally and botanically, but formally identified by Linnaeus in his Types Plantarum (1753). The genus is generally considered to have about ten parts with roughly 50 species. The true variety of kinds has varied, depending on how they are labeled, scheduled to similarity between varieties and hybridization. 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 true name Narcissus is unknown, but it is often linked to a Greek term for intoxicated (narcotic) and the myth of the young ones of this name who fell in love with his own reflection. The English word 'daffodil' appears to be produced from "asphodel", with which it was likened commonly.
The kinds are indigenous to meadows and woods in southern Europe and North Africa with a middle of diversity in the European Mediterranean, particularly the Iberian peninsula. Both cultivated and wild plants have naturalised widely, and were introduced in to the Far East before 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, mites and nematodes. 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 hundred years and by the later 19th century were an important commercial crop centred primarily on the Netherlands. Today narcissi are popular as trim blooms so that ornamental plants in private and public gardens. The long history of breeding has led to thousands of different cultivars. For horticultural purposes, narcissi are grouped into divisions, covering a variety of colours and shapes. Like other members of the 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 use in traditional healing and has resulted in the production of galantamine for the treatment of Alzheimer's dementia. Long celebrated in art and literature, narcissi are associated with a true number of themes in several cultures, ranging from loss of life to good fortune, and as icons of spring and coil. The daffodil is the nationwide bloom of Wales and the sign of cancer charities in many countries. The appearance of the outdoors flowers in spring is associated with festivals in many places.
Narcissus is a genus of perennial herbaceous bulbiferous geophytes, dying back again after flowering to the underground storage light. They regrow in the next yr from brown-skinned ovoid light bulbs with pronounced necks, and reach levels of 5-80 cm depending on species. Dwarf types such as N. asturiensis have a maximum level of 5-8 cm, while Narcissus tazetta might grow as large as 80 cm.
The plant life are scapose, having a single central leafless hollow rose stem (scape). Several blue-green or green, small, strap-shaped leaves arise from the bulb. The flower stem usually bears a solitary blossom, but sometimes a cluster of bouquets (umbel). The blossoms, that happen to be conspicuous and white or yellow usually, sometimes both or rarely renewable, contain a perianth of three parts. Closest to the stem (proximal) is a floral tube above the ovary, then an outer ring made up of six tepals (undifferentiated sepals and petals), and a central disc to conical shaped corona. The blossoms may hang up down (pendent), or be erect. You will find six pollen bearing stamens surrounding a central style. The ovary is inferior (below the floral parts) comprising three chambers (trilocular). The berry contains a dry out capsule that splits (dehisces) releasing numerous black seed products.
The bulb is situated dormant after the leaves and rose stem die back again and has contractile root base that take it down further into the soil. The blossom stem and leaves form in the light, to emerge the next season. Most species are dormant from warmer summer months to past due winter, flowering in the spring, though a few species are autumn flowering.
Tidak ada komentar:
Posting Komentar