Penstemon laevigatus Aiton var. angulatus Benn.
Penstemon laevigatus Aiton ssp. digitalis (Nutt. ex Sims) Benn.
Penstemon digitalis Nutt. ex Sims Foxglove beardtongue, talus slope penstemon, white beardtongue
Foxglove beardtongue is a widespread perennial in eastern North America. It prefers fields, roadsides, and open woods, and average to damp soils. Plants: 2-3′ (60-91 cm) high, with one or more erect stems that are green to purple. Leaves: Lower leaves are mostly smooth-edged, and 1-7″ (2.5-17 cm) long and 1½″ (3.8 cm) wide. Upper leaves are more lanceolate or elliptic in shape, with pointed tips. They are sessile, and opposite. They may have smooth edges or minute teeth. Flowers: Stalks contain six opposite pairs of flower clusters, each with 3-12 flowers, each about 1″ (2.5 cm) long. Cluster stalks are 1-3″ (2.5-7.6 cm) in length, and green grading to deep red. Flowers are pale blue, lavendar, pink, or white, with 5 petals, appearing from May to June. Flowers and stalks are densely hairy. Fruits: Dry capsules, ¼-⅜″ (9-12 mm). Online References:
Penstemon laevigatus Aiton var. angulatus Benn. Penstemon laevigatus Aiton ssp. digitalis (Nutt. ex Sims) Benn.
Penstemon digitalis description by Thomas H. Kent, last updated 9 Aug 2023. |
Range: Zones 3-8:
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