Photo: Silphium integrifolium 6.

Botanical name: 

Flowers and leaf. Helsinki bot.g., (Kump.), Finland. Planted. 2004-09-17.

Silphium integrifolium Michx.
Engl.: wholeleaf rosinweed.
Bot. syn.: Silphium laevigatum Pursh

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Photo: Silphium integrifolium 6.

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