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Penstemon ramosus (Branching Beardtongue)
Robust heterophyllous perennials from a woody caudex; stems 3-7.5 dm tall, puberulent, often branching midway up the stem; leaves of the branches linear, about 1 mm wide and 25 mm long; leaves of the main stem 3-6 mm wide, 6-11 cm long, isophyllous a...