| TITLE (opens new window) | DESCRIPTION |
| USDA Plants Database |
Federal Distribution and detailed information including photos |
| Botany News and Events |
New taxon for Wisconsin |
| USDA Agricultural Research Service (ARS) |
Images of seeds, fruits, embryos, etc. |
| USDA Agricultural Research Service (ARS) |
Images of seeds, fruits, embryos, etc. |
| Illinois Wildflowers |
Wonderful photographs; detailed descriptions; color and leaf arrangement key |
| Landscape Plants of the Upper Midwest; UW-Extension |
Interactive guide providing information on cultivation including: soil, zone, growth rate, landscape uses, pruning, light requirements; with photos and Latin name pronounciation |