 | 637-20. Long, cone-shaped receptacle of Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
| 637-20. Long, cone-shaped receptacle of Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
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