 | 708-21. Sow thistle (Sonchus arvensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, February 8, 2009Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
| 708-21. Sow thistle (Sonchus arvensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, February 8, 2009Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
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