 | 2429-09. Black lichen Verrucaria on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
| 2429-09. Black lichen Verrucaria on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
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