Spiraea

About 80-100, see text

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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.

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The genus was formerly treated as also contained 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.

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;Selected species

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Spiraea alba
Spiraea amoena
Spiraea arcuata
Spiraea baldschuanica
Spiraea bella
Spiraea betulifolia
Spiraea blumei
Spiraea calcicola
Spiraea cana
Spiraea canescens
Spiraea cantoniensis
Spiraea chamaedryfolia
Spiraea crenata
Spiraea decumbens
Spiraea densiflora
Spiraea douglasii (Hardhack)
Spiraea gemmata
Spiraea henryi
Spiraea hypericifolia
Spiraea japonica (Japanese Spiraea)
Spiraea latifolia
Spiraea longigemmis
Spiraea media
Spiraea micrantha
Spiraea miyabei
Spiraea mollifolia
Spiraea nervosa
Spiraea nipponica
Spiraea prunifolia (Bridalwreath Spiraea)
Spiraea pubescens
Spiraea rosthornii
Spiraea salicifolia (Bridewort Spiraea)
Spiraea sargentiana
Spiraea thunbergii
Spiraea tomentosa (Steeplebush)
Spiraea trichocarpa
Spiraea trilobata
Spiraea veitchii
Spiraea virginiana
Spiraea wilsonii
Spiraea yunnanensis

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

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Spiraea x arguta (S. x multiflora x S. thunbergii)
Spiraea x billardii (S. douglasii x S. salicifolia)
Spiraea x blanda (S. nervosa x S. cantoniensis)
Spiraea x brachybotrys (S. canescens x S. douglasii)
Spiraea x cinerea (S. hypericifolia x S. cana)
Spiraea x conspicua (S. japonica x S. latifolia)
Spiraea x fontenaysii (S. canescens x S. salicifolia)
Spiraea x foxii (S. japonica x S. betulifolia)
Spiraea x gieseleriana (S. cana x S. chamaedryfolia)
Spiraea x macrothyrsa (S. douglasii x S. latifolia)
Spiraea x multiflora (S. crenata x S. hypericifolia)
Spiraea x notha (S. betulifolia x S. latifolia)
Spiraea x nudiflora (S. chamaedryfolia x S. bella)
Spiraea x pikoviensis (S. crenata x S. media)
Spiraea x pyramidata (S. betulifolia x S. douglasii)
Spiraea x revirescens (S. amoena x S. japonica)
Spiraea x sanssouciana (S. japonica x S. douglasii)
Spiraea x schinabeckii (S. chamaedryfolia x S. trilobata)
Spiraea x semperflorens (S. japonica x S. salicifolia)
Spiraea x vanhouttei (S. trilobata x S. cantoniensis)
Spiraea x watsoniana (S. douglasii x S. densiflora)

Shrub: :"Shrub" is also a derogatory nickname for United States President George W Bush....

Northern Hemisphere: The Northern Hemisphere is the half of a planet's surface (or celestial sphere) that is north of the equator (the word hemisphere literally means 'half ball'). On Earth, the Northern Hemisphere contains most of the land and population....

Asia: Asia is the central and eastern part of Eurasia and world's largest continent. Defined by subtracting Europe from Eurasia, Asia is either regarded as a landmass of its own or as part of Eurasia....

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