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Published In: Species Plantarum 1: 392. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 8/11/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/23/2009)


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4. Rhododendron L. (rhododendron, azalea)

(Kron, 1993)

About 850 species, North America, Europe, Asia, south to New Guinea, Australia.

Numerous species of Rhododendron are cultivated as ornamentals and many cultivars and hybrids have been developed. The group now informally called azaleas (once treated as the separate genus Azalea L.) tend to be species that have deciduous foliage, have mostly 5 stamens, and have funnelform corollas, whereas rhododendrons tend to have evergreen leaves, 10 stamens, and more bell-shaped flowers. Our native Missouri species, which is not often cultivated as it apparently is finicky about soils, is a typical azalea. As a group, rhododendrons are known to produce poisonous diterpenes and therefore should not be ingested.

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