Photo 3837-24: Button snakeroot (Eryngium yuccifolium) both in...of Somerville Lake State Park. Texas


Button snakeroot (Eryngium yuccifolium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 28, 2026

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Button snakeroot (Eryngium yuccifolium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 28, 2026