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| Rhododendron
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Arborea rhododendron | ||||||||||||
| Scientific classification | ||||||||||||
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| Subgenera | ||||||||||||
Source: RBG, Edinburgh |
Rhododendron (from the Greek: rhodos, rose; dendron, tree) is a genus of flowering plants in the family Ericaceae. This is such a large genus that the plants are organised by subgenus, section, subsection and alliance.
These subgenera can be basically divided into four groups:
Rhododendron is a very widely distributed genus, but a major concentration of diversity occurs in the Sino-Himalayan mountains of southeast Asia from central Nepal east to Yunnan and Sichuan, with other significant areas of diversity in the mountains of Indo-China, Japan and Taiwan. Several species also occur in North AmericaNorth America is the third largest continent in area and the fourth ranked in population. It is bounded on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the south by the Caribbean Sea, and on the west by the North Pacific Ocea and a few in EuropeFor the band of the same name, see Europe (band . Europe is a continent forming the westermost part of the Eurasian supercontinent. Europe is bounded to the north by the Arctic Ocean, to the west by the Atlantic Ocean, to the south by the Mediterranean Se, and some tropical species occur as far south as BorneoBorneo (including the Kalimantan provinces of Indonesian, Sabah and Sarawak of Malaysia, and Brunei) is an island, the third largest island in the world, located at the center of the Malay archipelago and of Indonesia. Borneo is considered part of the geo and New GuineaNew Guinea located just north of Australia, is the world's second largest island having become separated from the Australian mainland when the area now known as the Torres Strait flooded around 5000 BC. The name Papua also refers to the island in whole or. They grow well in acid soil , and are noted for their many clusters of large trumpet-shaped blooms and their glossy oval leaves. Most rhododendrons flower for only a brief period each year, but during that time they provide a stunning display of massed colour.
The largest natural rhododendron garden in the world is in Bakersville , North CarolinaNorth Carolina is a southern state in the United States. North Carolina is one of the thirteen colonies that revolted against British rule in the American Revolution. It is bordered by South Carolina on the south, Georgia on the southwest, Tennessee on th. The garden is situated on the top of Roan Mountain state park.
The Rhododendron is the state flower of WashingtonWashington is a state in the Pacific Northwest of the United States. It should not be confused with Washington, DC, the nation's capital. To avoid confusion, the state is often called Washington state . Although the state capital is Olympia, the largest c and West VirginiaWest Virginia is a state of the United States, known as The Mountain State. While many consider it part of the South, many in the state's Northern Panhandle feel a greater affinity for Pittsburgh, while those in the Eastern Panhandle feel a greater affini.
There are several hundred cultivars of Rhododendron. These have been bred to have larger or smaller flowers, and a vast array of petal colours. An example of a cultivar popular in the US is Rhododendron 'President Roosevelt'.
Rhododendrons have a toxin called grayanotoxin in their pollen and nectar. People have been known to become ill from eating honey made by bees feeding on rhododendron and azalea flowers.
See also: azalea
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