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Spiraea

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Spiraea is a genus of about 80-100 species of shrubs in the Rosaceae, subfamily Spiraeoideae. They are native to the temperate Northern Hemisphere, with the greatest diversity in eastern Asia.

Spiraea species are used as food plants by the larvae of some Lepidoptera species including Brown-tail, Emperor Moth, Grey Dagger, Hypercompe indecisa and Setaceous Hebrew Character.

The genus was formerly treated as also containing the herbaceous species now segregated into the genera Filipendula and Aruncus; recent genetic evidence has shown that Filipendula is only distantly related to Spiraea, belonging in the subfamily Rosoideae.

Selected species
Spiraea douglasii
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Spiraea douglasii

Spiraea japonica
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Spiraea japonica

Spiraea thunbergii flowers
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Spiraea thunbergii flowers

There are also numerous named hybrids, some occurring in the wild, others bred in gardens; some are important ornamental plants:
Spiraea x vanhouttei
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Spiraea x vanhouttei

 


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