Tag Archives: Arkansas Beardtongue

Arkansas Beardtongue (Penstemon arkansanus) of the Plantain (Plantaginaceae) family, formerly of the Figwort (Scrophulariaceae) family, has showy white tubular flowers with a fifth stamen that is sterile, typically bearded (pubescent), and tonguelike in form, a hallmark of this large genus. … Continue reading →