Summary ²

Centaurea sulphurea (Sicilian star thistle or sulphur star knapweed) is an Asteraceae annual herb species. It is native to southwestern Europe and it is known on other continents as an introduced species. It is one of the closest relatives to Centaurea solstitialis, an extremely invasive thistle in California, but Centaurea sulphurea has only established several populations in California since its introduction in the mid-19th century.

Sources and Credits

1. (c) 2001 CDFA, some rights reserved (CC BY-NC), http://calphotos.berkeley.edu/cgi/img_query?seq_num=104397&one=T
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Centaurea_sulphurea

More Info

• iNat taxon page
• African Plants - a photo guide
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• NatureServe Explorer 2.0
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• World Flora Online

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