| TITLE (opens new window) | DESCRIPTION |
| Floristic Ratings |
Coefficient of Conservatism = 7 Wetland Indicator = OBL |
| USDA Plants Database |
Federal Distribution and detailed information including photos |
| Minnesota Dept. of Natural Resources |
Rare Species Guide; description, conservation, photos, maps, etc. |
| USDA Agricultural Research Service (ARS) |
Images of seeds, fruits, embryos, etc. |
| USDA Agricultural Research Service (ARS) |
Images of seeds, fruits, embryos, etc. |
| David G. Smith's "Delaware Wilflowers" |
Beautiful photographs; descriptions |
| Southwest School of Botanical Medicine |
Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada" |