Penstemon procerus var. procerus
Stems (6–)15–55(–70) cm. Leaves: basal and proximal cauline 23–90(–115) × 4–19 mm; cauline 13–85 × 4–17 mm, blade lanceolate to oblanceolate, sometimes elliptic or oblong. Thyrses (1–)5–23 cm, verticillasters (1–)3–8(–11). Flowers: calyx lobes (2.5–)3–5 × 0.6–2 mm, apex acuminate or short- to long-caudate; corolla (7–)8–11 mm; pollen sacs (0.3–)0.4–0.6 mm; staminode: distal 0.5–1 mm densely pilose, hairs yellow or golden yellow, to 0.5 mm. 2n = 16, 32.
Phenology: Flowering Jun–Aug(–Sep).
Habitat: Sagebrush shrublands, grassy slopes, aspen woodlands, open forest slopes, subalpine and alpine meadows.
Elevation: (300–)600–3700 m.
Distribution
Alta., B.C., Man., Sask., Yukon, Alaska, Colo., Idaho, Mont., N.Dak., Oreg., Utah, Wash., Wyo.
Discussion
Variety procerus is widespread in the Rocky Mountains from southern Colorado to the Yukon. The caudate apices of the calyx lobes sometimes are as long as the bodies of the lobes, especially in more northern populations.
Selected References
None.