Achillea tomentosa

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 L. [1] [a]
Synonyms
Alitubus tomentosus(L.) Dulac Chamaemelum tomentosum (L.) E. H. L. Krause Millefolium tomentosum(L.) Fourr.

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 Royal Horticultural Society's Award of Garden Merit. ^[2]

Description

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

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  Foliage

Notes

1. Achillea tomentosa Pursh is a synonym of Achillea millefolium var. occidentalis DC.

References

1. Sp. Pl. 2: 897 (1753)
2. "Achillea tomentosa woolly yarrow". RHS. Retrieved 15 August 2019.
3. Ian R. Thompson (2007). "A taxonomic treatment of tribe Anthemideae (Asteraceae) in Australia" (PDF). Muelleria . 25: 21–58. doi:10.5962/P.292234. ISSN   0077-1813. Wikidata   Q103967080.
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 .