Chromolaena

Chromolaena

Chromolaena odorata, considered a weed in many parts of the world
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Asteroideae
Tribe:	Eupatorieae
Genus:	Chromolaena DC.^[1]

Chromolaena is a genus of about 165 species of perennials and shrubs in the family Asteraceae. The name is derived from the Greek words χρῶμα (khrôma), meaning "color", and χλαῑνα (khlaīna) or λαῑνα (laīna) meaning "cloak". It refers to the colored phyllaries of some species.^[2] Members of the genus are native to the Americas, from the southern United States to South America (especially Brazil).^[2] One species, Chromolaena odorata, has been introduced to many parts of the world where it is considered a weed.^[3]

The plants of this genus were earlier taxonomically classified under the genus Eupatorium, but are now considered to be more closely related to other genera in the tribe Eupatorieae.^[4]

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Species

There are about 165 species, including:^[2]^[5]^[6]

Chromolaena bigelovii (A.Gray) R.M.King & H.Rob. – Bigelow's thoroughwort^[2]
Chromolaena borinquensis (Britt.) R.M.King & H.Rob. – limestone thoroughwort
Chromolaena corymbosa (Aubl.) R.M.King & H.Rob. – Caribbean thoroughwort
Chromolaena frustrata (B.L.Rob.) R.M.King & H.Rob. – Cape Sable thoroughwort^[2]
Chromolaena geraniifolia (Urb.) R.M.King & H.Rob. – geraniumleaf thoroughwort (Puerto Rico)^[7]
Chromolaena hirsuta (Hook. & Arn.) R.M.King & H.Rob.
Chromolaena impetiolaris (Griseb.) Nicolson
Chromolaena integrifolia (Bertero ex Spreng.) R.M.King & H.Rob.
Chromolaena ivifolia R.M.King & H.Rob. – ivyleaf thoroughwort^[2]
Chromolaena macrodon (DC.) Nicolson
Chromolaena misella (McVaugh) R.M.King & H.Rob.
Chromolaena odorata (L.) R.M.King & H.Rob. – Jack in the bush^[2]
Chromolaena oteroi (Monachino) R.M.King & H.Rob. – Mona Island thoroughwort
Chromolaena sagittata (A.Gray) R.M.King & H.Rob.
Chromolaena sinuata (Lam.) R.M.King & H.Rob. – wavyleaf thoroughwort
Chromolaena squalida (DC.) R.M.King & H.Rob.
Chromolaena trigonocarpa (Griseb.) R.M.King & H.Rob.
Chromolaena xalapana B.L.Turner

In Australia some species are called "triffid weed"^[8]

References

^ "Genus: Chromolaena DC". Germplasm Resources Information Network. United States Department of Agriculture. 2011-01-06. Archived from the original on 2012-10-12. Retrieved 2011-08-25.
^ ^a ^b ^c ^d ^e ^f ^g Nesom, Guy L. (2006). "Chromolaena". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 21. New York and Oxford: Oxford University Press. Retrieved 2011-08-25 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
^ "Chromolaena". Flora of Taiwan – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
^ Schmidt, GJ; EE Schilling (May 2000). "Phylogeny and Biogeography of Eupatorium (Asteraceae: Eupatorieae) Based on Nuclear ITS Sequence". American Journal of Botany. 87 (5). Botanical Society of America: 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. Archived from the original on 2012-12-13. Retrieved 2011-08-25.
^ John K. Francis, Research Forester, U.S. Department of Agriculture, Forest Service, International Institute of Tropical Forestry, Jardín Botánico Sur. John K. Francis (ed.). "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. Retrieved 2008-08-24.{{cite web}}: CS1 maint: multiple names: authors list (link)
^ "Archived copy" (PDF). Archived from the original (PDF) on 2007-08-30. Retrieved 2008-01-28.{{cite web}}: CS1 maint: archived copy as title (link) (page 6)