Achillea tomentosa

Achillea tomentosa, commonly known as woolly yarrow, is a flowering plant in the family Asteraceae. It is sometimes kept as a garden plant, and occasionally naturalizes outside its original range of dry lowland habitats of southern Europe and (possibly) western Asia. It is a recipient of the RHS's Award of Garden Merit.[2]

Achillea tomentosa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Achillea
Species:
A. tomentosa
Binomial name
Achillea tomentosa
Synonyms
  • Alitubus tomentosus (L.) Dulac
  • Chamaemelum tomentosum (L.) E. H. L. Krause
  • Millefolium tomentosum (L.) Fourr.

Description

Achillea tomentosa is quite similar in appearance to common yarrow Achillea millefolium, but typically has yellow ligules, more numerous disc florets, and straw‑colored involucral bracts with translucent margins.[3] Also, A. tomentosa is diploid, unlike the polyploid common yarrows.[4]

Notes
  1. Achillea tomentosa Pursh is a synonym of Achillea millefolium var. occidentalis DC.
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References
  1. Sp. Pl. 2: 897 (1753)
  2. "Achillea tomentosa woolly yarrow". RHS. Retrieved 15 August 2019.
  3. Muelleria 25: 21-58 (2007)
  4. Vetter, Stefan; Lambrou, Maria; Franz, Chlodwig; Ehrendorfer, Friedrich (1996). "Cytogenetics of experimental hybrids within the Achillea millefolium polyploid complex (yarrow)". Caryologia. 49 (1): 1–12. doi:10.1080/00087114.1996.10797344.
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