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Scientific classification
Class: Magnoliopsida
Order: Ericales
Family: Ericaceae
Genus: Rhododendron
Source: RBG, Edinburgh (http://www.rbge.org.uk)
Rhododendron 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:

  • large leaf or elepidotes (without scales on the underside of their leaves)
  • small leaf or lepidotes (with scales on the underside of their leaves)
  • evergreen azaleas
  • deciduous azaleas.

Rhododendron is a very widely distributed genus, but concentrations occur in North America and Asia. 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 Rhododendron is the State Flower[?] of Washington.

There are many hybrid varieties of Rhododendron. These have been bred to have larger or smaller flowers, and a vast array of petal colours.

Rhododendrons have toxic pollen and nectar, and people have been known to die from eating honey made by bees feeding on rhododendron and azalea flowers.

See also: azalea

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