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Cirsium horridulum var. horridulum  (Horrid thistle)
Marcus, Joseph A.

Cirsium horridulum var. horridulum

Cirsium horridulum Michx. var. horridulum

Horrid Thistle, Yellow Thistle

Asteraceae (Aster Family)

Synonym(s): Carduus pinetorum, Carduus smallii, Carduus spinosissimus, Cirsium horridulum var. elliottii, Cirsium smallii, Cirsium spinosissimum


USDA Native Status: L48 (N)


From the Image Gallery

3 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual , Biennial
Habit: Herb
Size Notes: Up to about 6 feet tall.

Bloom Information

Bloom Color: White , Yellow , Purple
Bloom Time: Apr , May , Jun


USA: AL , AR , CT , DE , FL , GA , LA , MA , MD , ME , MS , NC , NH , NJ , NY , OK , PA , RI , SC , TN , TX , VA

Additional resources

USDA: Find Cirsium horridulum var. horridulum in USDA Plants
FNA: Find Cirsium horridulum var. horridulum in the Flora of North America (if available)
Google: Search Google for Cirsium horridulum var. horridulum


Record Modified: 2019-03-18
Research By: CBR

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