Yellow Thistle Cirsium horridulum Michaux var. horridulumS3 (Watch list)  Synonyms: Carduus spinosissimus, Carduus spinosissimus var. elliottii, Cirsium smallii.

There are 20 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 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)


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