Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
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Richard and Teresa Ware rtw_silphium_mohrii_18
Desnsely stiff-haired stems give the plant a "shaggy" appearance, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
Richard and Teresa Ware rtw_silphium_mohrii_2
About 13 pale yellow ray flowers, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.