close up image of Cirsium vulgare BULL THISTLE at the James Woodworth Prairie Preserve - a seed pod beginning to disperse seedThis is an invasive, non-native species at the Peacock/Woodworth Prairie.
field image of Cirsium vulgare BULL THISTLE at the James Woodworth Prairie Preserve - a bud, a bloom, and a seed pod dispersing seed on a water-stressed lone specimen
field image of Cirsium vulgare BULL THISTLE at the James Woodworth Prairie Preserve - a lone specimen with a single bloom showing stem and leaves structure