| Aruncus sylvester | 
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| In bloom | 
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| Botanical illustration | 
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| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Eudicots | 
 
| Clade: | Rosids | 
 
| Order: | Rosales | 
 
| Family: | Rosaceae | 
 
| Genus: | Aruncus | 
| Species: | A. sylvester | 
| Binomial name | 
| Aruncus sylvester 
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| Synonyms | 
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Aruncus aethusifolius (H.Lév.) NakaiAruncus aruncus (L.) H.Karst.Aruncus asiaticus Pojark.Aruncus dioicus var. aethusifolius (H.Lév.) H.HaraAruncus dioicus var. asiaticus (Pojark.) Kitag.Aruncus dioicus f. laciniatus (H.Hara) H.IkedaAruncus dioicus var. laciniatus (H.Hara) H.HaraAruncus dioicus var. tenuifolius (Nakai ex H.Hara) H.HaraAruncus dioicus f. tomentosus (Koidz.) H.HaraAruncus dioicus subsp. vulgaris (Maxim.) TzvelevAruncus dioicus var. vulgaris (Maxim.) H.HaraAruncus kyusianus Koidz.Aruncus laciniatus H.HaraAruncus sylvester f. incisus Liou & C.Y.LiAruncus sylvester var. tenuifolius Nakai ex H.HaraAruncus sylvester var. tomentosus Koidz.Aruncus sylvester var. vulgaris Maxim.Aruncus sylvestris Kostel.Aruncus tomentosus (Koidz.) Koidz.Aruncus vulgaris (Maxim.) Raf. ex H.HaraAruncus vulgaris var. laciniatus H.HaraAstilbe thunbergii var. aethusifolia H.Lév.Spiraea aruncus L.Ulmaria aruncus (L.) Hill
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Aruncus sylvester, the goat's beard, is a species of flowering plant in the family Rosaceae, found from the Himalayas to the Russian Far East and Japan. As its synonym Aruncus aethusifolius it has gained the Royal Horticultural Society's Award of Garden Merit.