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Manchineel trees are often signposted as dangerous. William Ellis, ship's surgeon for James Cook on his final voyage, wrote: On the fourth, a party of men were sent to cut wood, as the island apparently afforded plenty of that article; amongst other trees they unluckily cut down several of the manchineel, the juice of which getting into their ...
Notable early examples of live plant harbored pests—such as beech scale, chestnut blight, and white pine blister rust—led to the Plant Quarantine Act of 1912 and regulations from the US Department of Agriculture in 1919. Despite these and subsequent regulations, insects and pathogens have continued to be introduced through live plants.
Also present are ricinine, an alkaloid, and an irritant oil. According to the 2007 edition of the Guinness Book of World Records, the castor oil plant is the most poisonous in the world, though its cousin abrin, found in the seeds of the jequirity plant, is arguably more lethal. Castor oil, long used as a laxative, muscle rub, and in cosmetics ...
Trees can live for a long time but eventually die, either from natural causes or killed by man. Ill-health of trees can be diagnosed, and early treatment, pruning or felling to prevent the spread may result in timber stocks and amenity trees being saved. Tree owners and Arborists/arboriculturists need to be aware of the risk posed by hazardous ...
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Native ash species, including white ash (pictured), have been declining rapidly this century due to predation by the emerald ash borer. [1]Silvics of North America (1991), [2] [3] a forest inventory compiled and published by the United States Forest Service, includes many hardwood trees.
A damaged home is seen in the aftermath of severe weather, Thursday, Jan. 12, 2023, near Prattville, Ala. A large tornado damaged homes and uprooted trees in Alabama on Thursday as a powerful ...