Penstemon fruticosus (Pursh) Greene [ Penstemon scouleri Douglas ex Lindl.]
      

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12 763598 Penstemon fruticosus (Pursh) Greene [80 763981 Penstemon scouleri Douglas ex Lindl.] Scrophulariaceae
Ann. Fl. Pomone, vol. 6 : t. 17 (1838)