Classification
 Subordinate Taxa
 Nomenclature
Scientific Name:
Ageratum L., Sp. Pl. 839-840 (1753)
 Description

Annual or perennial herbs or shrubs. Lvs opposite, petiolate, simple, usually toothed. Infl. a corymb, usually dense. Involucral bracts in 2–(3) rows, usually subequal, mostly chartaceous. Receptacle conic; scales usually 0. Corolla tubular. Style base not swollen. Achenes ellipsoid-cylindric to obpyramidal, 5-angled, hairy; pappus usually of few free or united scales, sometimes reduced to a corona or 0.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Exotic
Number of species in New Zealand within Ageratum L.
CategoryNumber
Exotic: Fully Naturalised1
Total1
 Bibliography
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.