Narcissus (plant) - Genus of spring

Narcissus are a genus of spring, contain fructans, low, molecular weight glucomannan, were known in ancient civilisation. The genus arose some time in the late, Oligocene, early, Miocene epochs, is considered to have about ten sections with 50 species. The species are to native meadows, woods, bearing a solitary flower include section Bulbocodium, produce nectar at the top and have 12 ovules, 36 seeds. The species include N, are from dormant summer, are placed in section Pseudonarcissus. Narcissus species have become while extinct others. Today narcissi are as popular cut flowers as ornamental plants. Description Narcissus are a genus of perennial, herbaceous bulb. The plants are scapose having a single, central, leafless, hollow flower stem. The stem is a floral tube above the ovary, is in the hollow, upper portion towards the bulb. The ovary is consisting of inferior three chambers. The fruit contains numerous subglobose seed s, consists of a dry capsule, consists of dehiscent, loculicidal capsules. The flower stem leaves form in the bulb, lies in the axil of the second, true leaf. The leaf scale is enveloping the semicircular flower stalk. The leaves die in summer, are to at the flat, broad, cylindrical base. Narcissus plants have to several, basal one leaves. Umbellate species have a fleshy racemose inflorescence with 2 15 20 flowers. The perianth arises above the apex of the inferior ovary. The tube is formed by fusion of the basal segments. The corona is a simple callose ring, is formed during floral development as a tubular outgrowth. Morphology varies from the tiny, pigmented disk of N. Cavanillesii to elongated trumpets of the section Pseudonarcissus. The chromosome number is with the 7 exception of N. Fragrances Fragrances are monoterpene isoprenoids with a small amount. Renaissance writers include Albert Magnus, William Turner. Authors have adopted narrow, wide interpretations of the genus. The view treated of the many species as separate genera. The situation was confused by the inclusion of many, unknown garden varieties. Subdivisions correspond to the popular names for daffodil types. The word Narcissus are derived from the Greek word narke.

Genus of spring, Genus of perennial, herbaceous bulb