Ageratina ligustrina
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Ageratina
Species:
A. ligustrina
Binomial name
Ageratina ligustrina
(DC.) R.M.King & H.Rob.
Synonyms[1]
Synonymy
  • Eupatorium biceps Klotzsch ex Vatke
  • Eupatorium erythropappum B.L.Rob.
  • Eupatorium ligustaefolium DC.
  • Eupatorium ligustifolium DC.
  • Eupatorium ligustrinum DC.
  • Eupatorium micranthum Less. 1830 not Lag. 1816
  • Eupatorium myriadenium Schauer
  • Eupatorium semialatum Benth.
  • Eupatorium weinmannianum Regel & Körn.

Ageratina ligustrina, the privet-leaved ageratina or privet-leaved snakeroot, is Mesoamerican species of evergreen flowering shrub in the sunflower family. It is widespread across much of Mexico and Central America from Tamaulipas to Costa Rica.[2][3][4]

Ageratina ligustrina grows to 4 metres tall, producing flat heads of daisy-like white to pink composite flower-heads in autumn.[5] The fragrant flower-heads may be up to 20 centimeters in diameter and attract butterflies.[6] The leaves are light green, elliptic to lance shaped, with toothed margins.[7]

Cultivation

Ageratina ligustrina has been in cultivation since the mid 1800s, and in 1996, it gained the Royal Horticultural Society's Award of Garden Merit.[8][9] It is not fully hardy in temperate regions.[5] In the US, it is suitable to be grown outdoors in hardiness zones 9–11.[7] A. ligustrina tends to be susceptible to slugs and aphids if grown outside, and whiteflies and red spider mites if grown in a greenhouse.[10]

Etymology

Ageratina is derived from Greek meaning 'un-aging', in reference to the flowers keeping their color for a long time. This name was used by Dioscorides for a number of different plants.[11]

The Latin specific epithet ligustrina highlights the plant's resemblance to the privet Ligustrum, though the two plants are not believed to be closely related.[12]

Chemical compounds

Eupalin and eupatolin are flavonol rhamnosides isolated from E. ligustrinum.[13]

References

  1. ↑ "Ageratina ligustrina (DC.) R.M.King & H.Rob.". The Global Compositae Checklist (GCC) – via The Plant List. Note that this website has been superseded by World Flora Online
  2. ↑ Turner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 -- Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272
  3. ↑ Linares, J. L. 2003 [2005]. Listado comentado de los árboles nativos y cultivados en la república de El Salvador. Ceiba 44(2): 105–268.
  4. ↑ Berendsohn, W.G., A. K. Gruber & J. A. Monterrosa Salomón. 2009. Nova silva cuscatlanica. Árboles nativos e introducidos de El Salvador. Parte 1: Angiospermae - Familias A a L. Englera 29(1): 1–438.
  5. 1 2 RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
  6. ↑ "Ageratina ligustrina | Coastal Hedging". www.coastalhedging.co.uk. Retrieved 2021-04-23.
  7. 1 2 Shoot. "Ageratina ligustrina Eupatorium ligustrinum Eupatorium micranthum Eupatorium weinmannianum Privet-leaved eupatorium Care Plant Varieties & Pruning Advice". www.shootgardening.co.uk. Retrieved 2021-04-23.
  8. ↑ Hind, Nicholas (2006). "567. AGERATINA LIGUSTRINA: Compositae". Curtis's Botanical Magazine. 23 (4): 278–288. ISSN 1355-4905.
  9. ↑ "RHS Plant Selector - Ageratina ligustrina". Retrieved 19 July 2013.
  10. ↑ "Eupatorium Ligustrinum from Burncoose Nurseries". Burncoose Nurseries. Archived from the original on 2011-10-14. Retrieved April 23, 2021.
  11. ↑ Gledhill, David (2008). "The Names of Plants". Cambridge University Press. ISBN 9780521866453 (hardback), ISBN 9780521685535 (paperback). pp 39
  12. ↑ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  13. ↑ The structures of eupalin and eupatolin. Two new flavonol rhamnosides isolated from Eupatorium ligustrinum D.C. L. Quijano, F. Malanco and Tirso Ríos, Tetrahedron, Volume 26, Issue 12, 1970, pages 2851-2859, doi:10.1016/S0040-4020(01)92863-7


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