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Urushiol-induced contact dermatitis (also called Toxicodendron dermatitis or Rhus dermatitis) is a type of allergic contact dermatitis caused by the oil urushiol found in various plants, most notably sumac family species of the genus Toxicodendron: poison ivy, poison oak, poison sumac, and the Chinese lacquer tree. [1]
Rhododendron species have long been used in traditional medicine. [ 87 ] [ 88 ] Animal studies and in vitro research have identified possible anti-inflammatory and hepatoprotective activities which may be due to the antioxidant effects of flavonoids or other phenolic compounds and saponins the plant contains. [ 89 ]
Rhododendron schlippenbachii, the royal azalea, is a species of Rhododendron native to the Korean Peninsula and adjacent regions of Northeast China, Japan, and the Russian Far East. It is the dominant understory shrub in many Korean hillside forests, growing at 400–1,500 m (1,300–4,900 ft) altitude.
Growing 3–7 m (9.8–23.0 ft) tall, it is an evergreen shrub with handsome elliptic or lanceolate leaves up to 13 cm (5.1 in) in length; and pale pink bell-shaped flowers in late spring. The Latin specific epithet argyrophyllum , meaning "silver-leaved", refers to the silvery-white under-surface ( indumentum ) of the leaves.
Rhododendron austrinum is a species of flowering plant in the heath family known by the common names Florida flame azalea, honeysuckle azalea, southern yellow azalea, and orange azalea. It is native to the southern United States, where it can be found in Alabama , Florida , Georgia , and Mississippi . [ 1 ]
Why Your Rhododendron's Leaves Are Rolling Up and Wilting (And What to Do About It) April 23, 2021 at 12:03 PM ... Live update… Weather. USA TODAY ...
Rhododendron macrophyllum, the Pacific rhododendron, [2] California rosebay, [3] California rhododendron, coast rhododendron or big leaf rhododendron, is a large-leaved species of Rhododendron native to the Pacific Coast of North America. It is the state flower of Washington. [4]
Look at the yellow-green button-like flowers in the center of the leaf clusters. Optimally, the flowers are tightly closed and little or no pollen is visible. 2.