View source for Madia sativa

{{Taxobox
| image = Madia sativa (3562644053).jpg
| regnum             = [[Plantae]]
| unranked_divisio   = [[Angiosperms]]
| unranked_classis   = [[Eudicots]]
| unranked_ordo      = [[Asterids]]
| ordo               = [[Asterales]]
| familia            = [[Asteraceae]]
| genus              = ''[[Madia]]''
| species            = '''''M. sativa'''''
| binomial           = ''Madia sativa''
| binomial_authority = [[Juan Ignacio Molina|Molina]], 1782
}}
'''''Madia sativa''''', known by the common names '''coast tarweed'''<ref name=BSBI07>{{cite web|title=BSBI List 2007 |publisher=Botanical Society of Britain and Ireland |url=http://www.bsbi.org.uk/BSBIList2007.xls |format=xls |archive-url=https://www.webcitation.org/6VqJ46atN?url=http://www.bsbi.org.uk/BSBIList2007.xls |archive-date=2015-01-25 |accessdate=2014-10-17 |deadurl=yes |df= }}</ref><ref>{{PLANTS|id=MASA|taxon=Madia sativa|accessdate=27 January 2016}}</ref> and '''Chilean tarweed''', is a species of flowering plant in the [[Asteraceae|aster family]] found in parts of western North and South America.

==Distribution==
''Madia sativa'' is native to the Americas, where it is distributed in two main areas: 
*The west coast of North America from [[Alaska]] and [[British Columbia]], through all the western mountain ranges of [[California]], to [[Baja California]].
*[[South America]] in [[Chile]] and [[Argentina]].

The plant grows in many types of [[habitat]]s, including disturbed areas. In western North America it is most common on coastal [[grassland]]s and nearby areas.

==Description==
''Madia sativa'' is an annual herb varying in size from 20 centimeters tall to well over two meters, the leafy stem branching or not. It is coated densely in sticky resin glands and it has a strong scent. The hairy leaves are linear or lance-shaped, the lowest up to 18 centimeters long.

The [[inflorescence]] is generally a cluster of [[Head (botany)|flower heads]] lined with bristly, glandular [[bract|phyllaries]]. Each head bears approximately 8 yellowish ray florets a few millimeters long around a center of several disc florets tipped with dark [[stamen|anthers]].

The fruit is a flat, hairless [[achene]] with no [[pappus (flower structure)|pappus]]. This plant has been grown for its seed oil.<ref>[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=220008025 Flora of North America]</ref>

==See also==
*[[California coastal prairie]]

==References==
{{Reflist}}

==External links==
{{Wikispecies}}
*[http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Madia+sativa Calflora Database: ''Madia sativa'' (Coastal Tarweed)]
*[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,1576,1596 Jepson Manual eFlora (TJM2) treatment of ''Madia sativa'']
*[http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Madia+sativa UC Photos gallery — ''Madia sativa'']
{{Commonscat|Madia sativa}}

{{Taxonbar|from=Q6727680}}

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[[Category:Madia|sativa]]
[[Category:Flora of Alaska]]
[[Category:Flora of British Columbia]]
[[Category:Flora of the West Coast of the United States]]
[[Category:Flora of Baja California]]
[[Category:Flora of California]]
[[Category:Flora of Chile]]
[[Category:Flora of Argentina]]
[[Category:Chilean Matorral]]
[[Category:Natural history of the California chaparral and woodlands]]
[[Category:Natural history of the California Coast Ranges]]


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