|Map created using swbiodiversity.org|
Cirsium ochrocentrum – common. Flower heads are bigger, and petals are longer than C. neomexicanum, often more brilliantly-colored, but plant is smaller. Flowers usually taller than wide.
Cirsium neomexicanum -- Flower head looks more “bushy” because spines are more strongly spreading than on C. ochrocentrum, allowing flower to open more (wider than tall)
Cirsium texanum - like C. ochrocentrum, but flower heads less than 25mm long, smaller overall.
-Based on Allred's Flora Neomexicana