Penstemon procerus (Slender Beardtongue) - photos and description

Penstemon procerus

Penstemon procerus

Penstemon procerus

Penstemon procerus
15 cm ruler for scale

Penstemon procerus

Penstemon procerus

Penstemon procerus

Penstemon procerus
Stem leaves in above photo

Penstemon procerus
Basal leaf in above photo

General: Plants with an ascending to erect growth habit, and slender stems. Rhizomatous with woody rootstalks, often found in large colonies.

Flowers: Flowers in terminal spikes and axillary whorls. Flowers are tube-shaped, two-lipped, the lower lip three-lobed, the upper lip two-lobed. Flowers purple-blue in colour, we measured a flower at 13 mm long and 8 mm wide. Flower spikes measured to 3 cm long.

Leaves: Upper stem leaves are opposite, sessile, lanceolate, we measured a stem leaf at 45 mm long and 7 mm wide. Basal leaves are oblanceolate, petiolate. We measured a basal leaf at 75 mm long and 12 mm wide. Leaves have a waxy feel. Plants glabrous.

Height: Height listed in Budd's Flora to 30 cm tall, we measured plants to 36 cm tall.

Habitat: Meadows and open woods.

Abundance: Common.

Origin: Native.

When and where photographed: The above photos were taken June 4th and June 21st in grassy meadows in the Cypress Hills, about 450 km southwest of Regina, SK, and, June 24th in grassland in pasture about 125 km west of our home in Regina, SK.