Photo: Silphium integrifolium 5.

Flowers and flowerbuds. Helsinki bot.g., (Kump.), Finland. Planted. 2004-09-17.
Silphium integrifolium Michx. Engl.: wholeleaf rosinweed. Bot. syn.: Silphium laevigatum Pursh
Personal use? Non-commercial use? Commercial use? Read the Fine Print. Comments? Tell me.
Photo: Silphium integrifolium 5.