Achillea tenuifolia
Achillea tenuifolia Lam. is an aromatic perennial in the daisy family, Asteraceae. Kew accepts this species, described by Lamarck in 1783, and records its native range from Türkiye through parts of western and central Asia to Pakistan. It also records an introduction to Germany.[1]
Appearance and microscopic structure
Sefidkon and colleagues describe a plant about twenty to ninety centimetres tall, with long, narrow leaves attached directly to the stem rather than carried on leaf stalks.[2]
A 2012 study examined material collected in Qazvin province, Iran, in June 2011. Its microscopic observations found pointed leaf segments, oil-containing cells and calcium oxalate crystals. Pores were present on both leaf surfaces, and the stems bore covering hairs. The roots contained thick-walled cells and water-conducting vessels with pitted or spiral wall patterns.[3]
The researchers used these features to help characterise their identified specimens. The observations describe the material examined; they are not a substitute for a complete identification key distinguishing every related yarrow.[3]
Variation under cultivation
A field experiment published in 2021 grew plants from seeds collected in seventeen wild populations under the same conditions at the Alborz Research Station in Karaj, Iran. The study found variation in the composition of their essential oils, with germacrene D the principal component in the oils examined.[4]
This experiment concerns chemical variation in cultivated material from the sampled populations. It does not demonstrate a medical benefit from using the plant.[4]
References
- ↑ Royal Botanic Gardens, Kew. Achillea tenuifolia Lam. Plants of the World Online. Accessed 9 October 2026.
- ↑ Sefidkon, F., Abdollahi, M., Salehi Shanjani, P. and Tavakoli, M. (2021). Variability in essential oil content and composition of Achillea tenuifolia Lam. populations in field conditions. Journal of Agricultural Science and Technology 23(3), 673–683; author-uploaded text, indexed introduction. Accessed 9 October 2026.
- ↑ 3.0 3.1 Manayi, A., Mirnezami, T., Saeidnia, S. and Ajani, Y. (2012). Pharmacognostical evaluation, phytochemical analysis and antioxidant activity of the roots of Achillea tenuifolia Lam. Pharmacognosy Journal 4(30), 14–19; methods and microscopic observations. Accessed 9 October 2026.
- ↑ 4.0 4.1 Sefidkon and colleagues (2021), field study abstract as indexed by the US Environmental Protection Agency, HERO record 10627697. Accessed 9 October 2026.