Penstemon fruticosus (Pursh) Greene [ Penstemon crassifolius Lindl.]
      
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5 763598 Penstemon fruticosus (Pursh) Greene [181 763506 Penstemon crassifolius Lindl.] Scrophulariaceae
J. Paxton, Paxton’s Mag. Bot., vol. 9 : p. 197 (1839) [S. Holden]