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Penstemon ×dubius

Penstemon ×dubius Davidson (pro sp.)

Beardtongue, Dubius Penstemon

Scrophulariaceae (Figwort family)

Synonym(s):

USDA Symbol: PEDU5

USDA Native Status: L48 (N)

Natural hybrid of Penstemon centranthifolius and P. grinnellii.