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]
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 epithetligustrina highlights the plant's resemblance to the privet Ligustrum, though the two plants are not believed to be closely related.[12]
^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
^Linares, J. L. 2003 [2005]. Listado comentado de los árboles nativos y cultivados en la república de El Salvador. Ceiba 44(2): 105–268.
^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.
^ abRHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN978-1405332965.
^Gledhill, David (2008). "The Names of Plants". Cambridge University Press. ISBN9780521866453 (hardback), ISBN9780521685535 (paperback). pp 39
^Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN9781845337315.
^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
