Ageratina ligustrina

Ageratina ligustrina
Scientific 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.) & H.Rob.
Synonyms
	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 (privet-leaved ageratina, 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[]

A. 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[]

^ "Ageratina ligustrina (DC.) R.M.King & H.Rob.". The Global Compositae Checklist (GCC) – via The Plant List.
^ 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.
^ ^a ^b RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
^ "Ageratina ligustrina | Coastal Hedging". www.coastalhedging.co.uk. Retrieved 2021-04-23.
^ ^a ^b 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.
^ Hind, Nicholas (2006). "567. AGERATINA LIGUSTRINA: Compositae". Curtis's Botanical Magazine. 23 (4): 278–288. ISSN 1355-4905.
^ "RHS Plant Selector - Ageratina ligustrina". Retrieved 19 July 2013.
^ "Eupatorium Ligustrinum from Burncoose Nurseries". Burncoose Nurseries. Archived from the original on 2011-10-14. Retrieved April 23, 2021.
^ Gledhill, David (2008). "The Names of Plants". Cambridge University Press. ISBN 9780521866453 (hardback), ISBN 9780521685535 (paperback). pp 39
^ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
^ 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

External links[]

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[1] "Ageratina ligustrina (DC.) R.M.King & H.Rob.". The Global Compositae Checklist (GCC) – via The Plant List.

[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.

[:0-5] 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.

[:1-7] 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.

[gledhill-11] Gledhill, David (2008). "The Names of Plants". Cambridge University Press. ISBN 9780521866453 (hardback), ISBN 9780521685535 (paperback). pp 39

[RHSLG-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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