Spotted Knapweed Centaurea stoebe Linnaeus subsp. micranthos (S.G. Gmelin ex Gugler) HayekNon-native  -  Invasive    Synonyms: Centaurea maculosa, Centaurea stoebe var. maculosa, Spotted Star-thistle.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Asterales   >   Family Asteraceae   >   Genus Centaurea   

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Spotted Knapweed in Caroline Co., Maryland (10/6/2012). Photo by Jim Brighton. (MBP list)

Spotted Knapweed in Frederick Co., Maryland (7/24/2016). Note ribbed bracts with black, triangular tips. Photo by Jane Hill. (MBP list)

Spotted Knapweed, a very destructive invasive species, in Anne Arundel Co., Maryland (7/15/2012). Photo by Bill Hubick. (MBP list)

Spotted Knapweed blooming in Anne Arundel Co., Maryland (6/9/2019). Photo by Matthew Beziat. (MBP list)

Spotted Knapweed leaves in Caroline Co., Maryland (10/6/2012). Photo by Jim Brighton. (MBP list)

Spotted Knapweed in Anne Arundel Co., Maryland (7/27/2011). Photo by Bill Harms. (MBP list)

Spotted Knapweed in Anne Arundel Co., Maryland (9/18/2010). Photo by Bill Harms. (MBP list)

Spotted Knapweed in Howard Co., Maryland (8/12/2017). Photo by James Frost. (MBP list)

Spotted Knapweed in Prince George's Co., Maryland (7/31/2020). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)

Spotted Knapweed in Garrett Co., Maryland (7/12/2014). Photo by Bill Hubick. (MBP list)

Spotted Knapweed in Garrett Co., Maryland (9/18/2021). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)


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MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: https://mdinvasives.org/species-of-concern/.