Penstemon barbatus (Cav.) Roth [ Chelone barbata Cav.]
      
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5 763392 Penstemon barbatus (Cav.) Roth [116 233288 Chelone barbata Cav.] Scrophulariaceae
T. Smielovsky [Smielowsky, Smelovsky, Smelowsky], Hort. Petropol.: t. 5 (1806)