is a genus of about 165 species of Chromolaena perennials and shrubs in the aster family, Asteraceae. The name is derived from the Greek words χρῶμα ( chroma), meaning "color," and λαινα ( laina), meaning "cloak." It refers to the colored phyllaries of some species. Members of the genus are native to the  Americas, from the southern United States to South America (especially Brazil). One species,  , has been Chromolaena odorata introduced to many parts of the world where it is considered a weed. 
The plants of this genus were earlier taxonomically classified under the genus
, but are now considered to be more closely related to other genera in the tribe Eupatorium Eupatorieae. 
In Australia some species are called "triffid weed" 
References [ edit ]
^ "Genus: . Chromolaena DC." Germplasm Resources Information Network. United States Department of Agriculture. 2011-01-06 . Retrieved . 2011-08-25
^ a b c d e f Nesom, Guy L. ". Chromolaena de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 133. 1836." Flora of North America. eFloras.org . Retrieved . 2011-08-25
^ ". Chromolaena DC." Digital Flora of Taiwan. eFloras.org.
^ Schmidt, GJ; EE Schilling (May 2000). "Phylogeny and Biogeography of Eupatorium (Asteraceae: Eupatorieae) Based on Nuclear ITS Sequence". American Journal of Botany. Botanical Society of America. 87 (5): 716–726. doi: 10.2307/2656858. JSTOR 2656858. PMID 10811796.
^ ". Chromolaena" Integrated Taxonomic Information System . Retrieved . 2010-05-27
^ "GRIN Species Records of . Chromolaena" Germplasm Resources Information Network. United States Department of Agriculture . Retrieved . 2011-08-25
^ John K. Francis, Research Forester, U.S. Department of Agriculture, Forest Service, International Institute of Tropical Forestry, Jardín Botánico Sur. " Chromolaena geraniifolia (Urban) King & H.E. Robins" (PDF). Wildland Shrubs of the United States and its Territories: Thamnic Descriptions, General Technical Report IITF-WB-1, Edited by John K. Francis . Retrieved . 2008-08-24
^ http://www.weeds.org.au/docs/weednet6.pdf (page 6)
External links [ edit ]