Скачать или смотреть Nerína - Nerium oleander - Nería - Eiturjurt - Garðplöntur

Nerium oleander - Espirradeira - Oleandro - Lárviðarrós - Nería - Nerína - Olíander - Eitruð planta - Apocynaceae - Apocynaceae - Lárrósarætt - Neríuætt - Poisonous plant - Eiturjurtir - Skrautrunni - Stássplanta. Lárviðarrósir eru vinsælar pottaplöntur í kaldari löndum í garðskálum og í gróðurhúsum - og sem stofuplöntur. Blómin eru ekki með hunangssafa og eru því lítið heimsótt af skordýrum.. It is so widely cultivated that no precise region of origin has been identified, though southwest Asia has been suggested. Oleander is one of the most poisonous commonly grown garden plants. Olíander er ein eitraðasta plantan í almennri ræktun sem pottaplanta og garðjurt. Oleander grows to 2–6 m tall, with erect stems that splay outward as they mature; first-year stems have a glaucous bloom, while mature stems have a grayish bark. The leaves are in pairs or whorls of three, thick and leathery, dark-green, The flowers grow in clusters at the end of each branch; they are white, pink to red, 2.5–5 cm diameter, with a deeply 5-lobed fringed corolla round the central corolla tube. They are often, but not always, sweet-scented - There are estimated to be 25 million oleanders planted along highways and roadsides throughout the State of California.

Drugs derived from N. oleander have been investigated as a treatment for cancer, but have failed to demonstrate clinical utility. According to the American Cancer Society, the trials conducted so far have produced no evidence of benefit, while they did cause adverse side effects.

Some invertebrates are known to be unaffected by oleander toxins, and feed on the plants. Caterpillars of the polka-dot wasp moth (Syntomeida epilais) feed specifically on oleanders and survive by eating only the pulp surrounding the leaf-veins, avoiding the fibers. Larvae of the common crow butterfly (Euploea core) and oleander hawk-moth (Daphnis nerii) also feed on oleanders, and they retain or modify toxins, making them unpalatable to potential predators such as birds, but not to other invertebrates such as spiders and wasps. The flowers require insect visits to set seed, and seem to be pollinated through a deception mechanism. The showy corolla acts as a potent advertisement to attract pollinators from a distance, but the flowers are nectarless and offer no reward to their visitors. They therefore receive very few visits, as typical of many rewardless flower species. Fears of honey contamination with toxic oleander nectar are therefore unsubstantiated. See more: https://en.wikipedia.org/wiki/Nerium

The etymological association of oleander with the bay laurel has continued into the modern day: in France the plant is known as "Laurier Rose", while the Spanish term, "Adelfa", is the descendant of the original Ancient Greek name for both the bay laurel and the oleander, daphne, which subsequently passed into Arabic usage and thence to Spain. See more: https://en.wikipedia.org/wiki/Nerium