| Sorghastrum nutans Indiangrass View 47 images |  |
| Solidago speciosa Showy goldenrod View 5 images |  |
| Solidago ulmifolia Elmleaf goldenrod View 8 images |  |
| Spiraea alba White meadowsweet View 8 images |  |
| Sporobolus heterolepis Prairie dropseed View 8 images |  |
| Staphylea trifolia American bladdernut View 20 images |  |
| Symphoricarpos albus Common snowberry View 3 images |  |
| Symphyotrichum ericoides White heath aster View 4 images |  |
| Symphoricarpos orbiculatus Coralberry View 10 images |  |
| Thalictrum dasycarpum Purple meadow-rue View 17 images |  |
