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It was found that the symptoms were due to the fine star-shaped trichomes (hairs) on all parts of platanus trees, which are broken off by strong wind after a prolonged dry period. The dust created causes direct irritation and scratchiness in the eyes, throat, and nose, but not the runny nose and itching eyes and nose caused by an allergy .
Platanaceae, the plane family, is a family of flowering plants in the order Proteales. The family consists of only a single extant genus Platanus, with twelve known species. [4] The plants are tall trees, native to temperate and subtropical regions of the Northern Hemisphere. The hybrid London plane is widely planted in cities worldwide.
Platanus orientalis, the Oriental plane, [2] is a large, deciduous tree of the Platanaceae family, growing to 30 m (98 ft) or more, [3] and known for its longevity and spreading crown. In autumn its deep green leaves may change to blood red, amber, and yellow.
Platanus occidentalis, also known as American sycamore, American planetree, western plane, [2] occidental plane, buttonwood, and water beech, [3] is a species of Platanus native to the eastern and central United States, the mountains of northeastern Mexico, extreme southern Ontario, [4] [5] and extreme southern Quebec. [6]
The London plane, or sometimes hybrid plane, Platanus × hispanica, [2] is a tree in the genus Platanus. It is often known by the synonym Platanus × acerifolia , a later name. It is a hybrid of Platanus orientalis (oriental plane) and Platanus occidentalis (American sycamore).
Platanus racemosa is a species of plane tree known by several common names, including California sycamore, western sycamore, California plane tree, and in North American Spanish aliso. [1] Platanus racemosa is native to California and Baja California , where it grows in riparian areas, canyons , floodplains , at springs and seeps , and along ...
They grow on branches, tree trunks, and rocks. “Similar to orchids, air plants found a way to grow where other plants cannot,” says Marc Hachadourian, ...
The tree can grow as high as 80 feet (24 m) and has leaves that can be up to 8 inches (200 mm) wide. [2] It is a deciduous tree with leaves that turn a yellowish brown in autumn . [ 3 ] The leaves have five lobes that can grow up to 8 inches wide.