Summary ⁵

Centaurea stoebe is a species of Centaurea found in Northern Italy. It is also an invasive species in the United States, and particularly widespread in dryer regions of the Pacific Northwest.
The common name spotted knapweed most often refers to Centaurea stoebe, formerly known as C. maculosa.

How to recognize it? ⁶

Solitary pink/purple flowerhead; black tipped bracts. Gray-green, deeply lobed leaves. Grow to 1.5m (4.9 ft).

Observations in Banff National Park ⁷

https://inaturalist.ca/observations?project_id=69401&taxon_id=76214&place_id=any&verifiable=any

Sources and Credits

1. (c) Kutushev Radik, some rights reserved (CC BY-NC), uploaded by Kutushev Radik
2. (c) Radio Tonreg, some rights reserved (CC BY), http://commons.wikimedia.org/wiki/File:Centaurea_stoebe_(7993125496).jpg
3. (c) Stefan.lefnaer, some rights reserved (CC BY-SA), http://commons.wikimedia.org/wiki/File:Centaurea_stoebe_sl15.jpg
4. (c) Stefan.lefnaer, some rights reserved (CC BY-SA), http://commons.wikimedia.org/wiki/File:Centaurea_stoebe_sl2.jpg
5. Adapted by bioblitzbanff from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Centaurea_stoebe
6. (c) bioblitzbanff, some rights reserved (CC BY-SA)
7. (c) metallyza, some rights reserved (CC BY-SA)

More Info

• iNaturalist.ca taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• OregonFlora.org
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online
• 日本のレッドデータ検索システム
• 植物和名−学名インデックス YList

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