Leaves of bull thistle (Cirsium horridulum) in area of a ... Leaves of bull thistle (Cirsium horridulum) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022The leaves of the bull thistle (Cirsium horridulum) that once graced the area of a former pond in Washington-on-the-Brazos State Historic Site in Washington, Texas, are now visible in all their glory. The photograph was taken on February 20, 2022, capturing the delicate beauty of these leaves as they sway gently in the breeze. - generated by AI The image shows the leaves of a plant with serrated edges and spines or thorns emerging from its leaf margins. The leaves appear to be green and are densely packed together in an area that was once filled with water. From the caption, it appears this is an invasive species known as bull thistle (Cirsium horridulum). It is a native of eastern Texas but has been introduced elsewhere as a noxious weed. The image shows what looks to be a dense mat of vegetation growing in a spot where a pond once existed. The leaves are green and appear to have serrated edges, and there are spines or thorns emerging from the leaf margins. This is consistent with the description of bull thistle in literature. – AI vision |
Washington-on-the-Brazos ... 2022 |
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