Kingdom Plantae Family Asteraceae Tribe Cynareae Rank Species | Order Asterales Subfamily Carduoideae Genus Cirsium | |
Similar Cirsium perplexans, Cirsium douglasii, Cirsium rhothophilum, Cirsium andrewsii, Cirsium mohavense | ||
Cirsium grahamii, called Graham’s thistle , is a North American species of plants in the thistle tribe within the sunflower family. The species is native to Sonora, Chihuahua, Durango, Nuevo León, New Mexico, and Arizona.
Cirsium grahamii is a biennial herb up to 100 cm (40 inches) tall, blooming only once before dying. Leaves have thin spines along the edges. There is several flower heads per plant, with deep purple disc florets but no ray florets.
References
Cirsium grahamii Wikipedia(Text) CC BY-SA