About Penstemon rupicola (Piper) Howell
Scientific Name and Common Names
Penstemon rupicola is a penstemon species that is commonly called cliff beardtongue or rock penstemon.
Native Range
This plant is native to the west coast of the United States, where its range extends from Washington down to the Klamath Mountains of far northern California.
Habitat
It grows in rocky mountainous habitats in this region.
Growth Form and Size
It is a clumpy, mat-forming subshrub that reaches a maximum height of 14 centimeters.
Leaf Characteristics
Its leaves are thick, waxy, arranged oppositely, shaped round or oval, and can grow up to 2 centimeters long.
Flower Characteristics
The showy, wide-mouthed tubular flowers that grow from the mat can be nearly 4 centimeters long, and range in color from light purple to bright pink.
Horticultural Recognition
This plant has received the Royal Horticultural Society's Award of Garden Merit.
