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Taxon author: (Michx.) R.T. Clausen

ITIS records citing taxon author "(Michx.) R.T. Clausen"
 
 Kingdom Plantae
  Pinus rigida ssp. serotina (Michx.) R.T. Clausen -- not accepted
  Silene caroliniana ssp. pensylvanica (Michx.) R.T. Clausen -- accepted -- Pennsylvania catchfly
  Vitis vulpina ssp. riparia (Michx.) R.T. Clausen -- not accepted
   

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