Chromolaena

{{Automatic taxobox

| image = Chromolaena_odorata.jpg

| image_caption = Chromolaena odorata, considered a weed in many parts of the world

| display_parents = 2

| taxon = Chromolaena

| authority = DC.{{cite web | url = http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?13986 | title = Genus: Chromolaena DC. | work = Germplasm Resources Information Network | publisher = United States Department of Agriculture | date = 2011-01-06 | access-date = 2011-08-25 | archive-url = https://web.archive.org/web/20121012151916/http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?13986 | archive-date = 2012-10-12 | url-status = dead }}

}}

Chromolaena is a genus of about 165 species of perennials and shrubs in the family Asteraceae. The name is derived from the Greek words {{lang|grc|χρῶμα}} ({{grc-tr|χρῶμα}}), meaning "color", and {{lang|grc|χλαῑνα}} ({{grc-tr|χλαῑνα}}) or {{lang|grc|λαῑνα}} ({{grc-tr|λαῑνα}}) meaning "cloak". It refers to the colored phyllaries of some species.{{eFloras|1|106935 |first=Guy L. |last=Nesom |volume=21 |access-date=2011-08-25}} Members of the genus are native to the Americas, from the southern United States to South America (especially Brazil). One species, Chromolaena odorata, has been introduced to many parts of the world where it is considered a weed.{{eFloras|100|106935|Chromolaena}}

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.{{cite journal | title = Phylogeny and Biogeography of Eupatorium (Asteraceae: Eupatorieae) Based on Nuclear ITS Sequence | first = GJ | last = Schmidt |author2=EE Schilling | journal = American Journal of Botany |date=May 2000 | volume = 87 | issue = 5 | pages = 716–726 | pmid = 10811796 | doi = 10.2307/2656858 | publisher = Botanical Society of America | jstor = 2656858 | doi-access = free }}

Species

There are about 165 species, including:{{ITIS |id=37030 |taxon=Chromolaena |accessdate=2010-05-27}}{{cite web |url=http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?13986 |archive-url=https://archive.today/20121213010503/http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?13986 |url-status=dead |archive-date=2012-12-13 |title=GRIN Species Records of Chromolaena |work=Germplasm Resources Information Network |publisher=United States Department of Agriculture |access-date=2011-08-25 }}

Chromolaena bigelovii (A.Gray) R.M.King & H.Rob. – Bigelow's thoroughwort
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
Chromolaena geraniifolia (Urb.) R.M.King & H.Rob. – geraniumleaf thoroughwort (Puerto Rico){{cite web | url = http://www.fs.fed.us/global/iitf/pdf/shrubs/Chromolaena%20geraniifolium.pdf | title = Chromolaena geraniifolia (Urban) King & H.E. Robins | author = John K. Francis, Research Forester, U.S. Department of Agriculture, Forest Service, International Institute of Tropical Forestry, Jardín Botánico Sur | work = Wildland Shrubs of the United States and its Territories: Thamnic Descriptions, General Technical Report IITF-WB-1 | editor = John K. Francis | access-date = 2008-08-24 }}
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
Chromolaena macrodon (DC.) Nicolson
Chromolaena misella (McVaugh) R.M.King & H.Rob.
Chromolaena odorata (L.) R.M.King & H.Rob. – Jack in the bush
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"{{cite web |url=http://www.weeds.org.au/docs/weednet6.pdf |title=Archived copy |access-date=2008-01-28 |url-status=dead |archive-url=https://web.archive.org/web/20070830083549/http://www.weeds.org.au/docs/weednet6.pdf |archive-date=2007-08-30 }} (page 6)

References

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Category:Asteraceae genera