TROPICAL PLANT ENCYCLOPEDIA
Penstemon digitalis
Foxglove PenstemonFamily: Plantaginaceae
Origin: Eastern and Southeastern United States
Basal leaves are elliptic and stem leaves are lance-shaped to oblong. Features white, two-lipped, tubular flowers (to 1.25" long) borne in panicles atop erect, rigid stems.
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Link to this plant:
https://toptropicals.com/catalog/uid/penstemon_digitalis.htm