Genus Silphium (Prairie dock, Rosinweed)
Silphium perfoliatum Photo/Illustration: Michelle Gervais
SILL-fee-um Common Name: Prairie dock, Rosinweed ...
Previous Species -- Prairie Dock (Silphium terebinthinaceum)
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terebinthinaceum (Prairie Dock) has stems 4 to 10 feet high, panicled at the summit, and bearing many small heads of light yellow flowers. A variety (pinnatifidum) has leaves deeply cut or pinnatifid. S.
Prairie Dock [English]: Silphium terebinthinaceum
Prairie Dodder [English]: Cuscuta plattensis
Prairie Dog-Tooth-Violet [English]: Erythronium mesochoreum
Prairie Dogbane [English]: Apocynum cannabinum ...
 See also: Dock, Terebinth, Sunflower, Aster, Solidago
  
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