Ageratina ligustrina (DC.) R.M.King & H.Rob.

Large shrub or small tree to 5 m tall, more or less hemispherical. Stems erect, densely branched. Leaves elliptical, to 10 cm long, to 4 cm wide, margins sparsely toothed, subsessile. Capitula in clustered corymbs, to 8 mm across; autumn. Florets cream or tinged with pink. Pappus often pinkish. [Eupatorium ligustrinum DC.]

C America


A. altissima (L.) R.M. King & H. Rob. from E North America is a perennial herb or shrub to 2 m tall, with narrow entire upper leaves, capitula in clustered corymbs and white florets. [Eupatorium rugosum hort., Ageratum altissimum L.]

Source: Jeanes, J. (2002). Asteraceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Asteranae
order      Asterales
family       Asteraceae
genus        Ageratina Spach