Yellow Thistle Cirsium horridulum Michaux var. horridulumS3 (Watch list)    Synonyms: Bristle Thistle, Carduus spinosissimus, Carduus spinosissimus var. elliottii, Cirsium smallii, irsium horridulum horridulum.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Asterales   >   Family Asteraceae   >   Genus Cirsium   

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Host plant for various moth species including Hedya cyanana (Gilligan, Wright, & Gibson, 2008).

There are 28 records in the project database.

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Yellow Thistle in Talbot Co., Maryland (6/4/2016). Photo by Jared Satchell. (MBP list)

Yellow Thistle in Worcester Co., Maryland (5/15/2019). Photo by Jim Stasz. (MBP list)

Yellow Thistle blooming in Worcester Co., Maryland (5/27/2016). Photo by Bill Hubick. (MBP list)

Yellow Thistle blooming in Talbot Co., Maryland (4/30/2016). Photo by Jim Brighton. (MBP list)

The basal leaves of Yellow Thistle in Worcester Co., Maryland (10/22/2016). Photo by Ashley Bradford. (MBP list)

Yellow Thistle in Worcester Co., Maryland (3/25/2017). Photo by Bill Hubick. (MBP list)

Yellow Thistle in Somerset Co., Maryland (5/10/2019). (c) llsmith61, some rights reserved (CC BY-NC). Photo by llsmith61 via iNaturalist. (MBP list)


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