 | 2668-20. Orange Caloplaca lichen on a sandstone rock in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
| 2668-20. Orange Caloplaca lichen on a sandstone rock in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
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