Êtes-vous un étudiant de l'EPFL à la recherche d'un projet de semestre?
Travaillez avec nous sur des projets en science des données et en visualisation, et déployez votre projet sous forme d'application sur Graph Search.
Concept
Poppy
Résumé
A poppy is a flowering plant in the subfamily Papaveroideae of the family Papaveraceae. Poppies are herbaceous plants, often grown for their colourful flowers. One species of poppy, Papaver somniferum, is the source of the narcotic drug mixture opium which contains powerful medicinal alkaloids such as morphine and has been used since ancient times as an analgesic and narcotic medicinal and recreational drug. It also produces edible seeds. Following the trench warfare in the poppy fields of Flanders, Belgium during World War I, poppies have become a symbol of remembrance of soldiers who have died during wartime, especially in the UK, Canada, Australia, New Zealand and other Commonwealth realms.
Poppies are herbaceous annual, biennial or short-lived perennial plants. Some species are monocarpic, dying after flowering. Poppies can be over a metre tall with flowers up to 15 centimetres across. Flowers of species (not cultivars) have 4 or 6 petals, many stamens forming a conspicuous whorl in the center of the flower and an ovary of from 2 to many fused carpels. The petals are showy, may be of almost any colour and some have markings. The petals are crumpled in the bud and as blooming finishes, the petals often lie flat before falling away. In the temperate zones, poppies bloom from spring into early summer. Most species secrete latex when injured. Bees use poppies as a pollen source. The pollen of the oriental poppy, Papaver orientale, is dark blue, that of the field or corn poppy (Papaver rhoeas) is grey to dark green. The opium poppy, Papaver somniferum, grows wild in eastern and southern Asia, and South Eastern Europe. It is believed that it originated in the Mediterranean region.
Source officielle
À propos de ce résultat
Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.