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Taxon author: R.W. Benn.

ITIS records citing taxon author "R.W. Benn."
 
 Kingdom Plantae
  Penstemon australis ssp. laxiflorus (Pennell) R.W. Benn. -- not accepted -- Eustis Lake beardtongue
  Penstemon hirsutus var. minimus R.W. Benn. -- not accepted
  Penstemon hirsutus var. pygmaeus R.W. Benn. -- not accepted
  Penstemon laevigatus ssp. alluviorum (Pennell) R.W. Benn. -- not accepted
  Penstemon laevigatus ssp. calycosus (Small) R.W. Benn. -- not accepted
  Penstemon laevigatus ssp. deamii (Pennell) R.W. Benn. -- not accepted
  Penstemon laevigatus ssp. digitalis (Nutt. ex Sims) R.W. Benn. -- not accepted
  Penstemon laevigatus var. angulatus R.W. Benn. -- not accepted
  Penstemon laevigatus var. deamii (Pennell) R.W. Benn. -- not accepted
  Penstemon pallidus ssp. arkansanus (Pennell) R.W. Benn. -- not accepted
   

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