Penstemon deustus Douglas

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Penstemon deustus is a species of penstemon known by the common names hotrock penstemon and scabland penstemon. It is native to much of the northwestern United States from the Pacific Northwest to Wyoming, where it grows in many types of forest and open plateau habitat, often on soils heavy in volcanic rock or on limestone outcrops.

Description

Penstemon deustus is a subshrub, a plant with a largely herbaceous character, but somewhat woody at its base. Its stems grow from a woody caudex with many branches that may be as much as 1 centimeter thick. It may also have leafy shoots that do not produce flowers. It stems range in size from 6 to 60 cm, but usually are taller than 15 cm. They may be nearly hairless, but are more often covered in small, stiff, backwards facing hairs and are never waxy. The stems may lay down on the ground, grow outwards a short distance before curving to grow upwards, or grow straight upwards.

The leaves can be hairless or covered in glandular hairs and have edges that are shallowly to deeply toothed. All the leaves are cauline, attached to the stems rather than to the base of the plant, and are not leathery. Like the stems they may be hairless or retrorsely hairy and might be attached on opposite sides of the stems, nearly opposite, or arranged in whorls. Stems will usually have five to nine pairs of leaves, attached by petioles or directly to the stem.

The inflorescence is 6 to 30 centimeters at the top of a stem and produces five to eleven groups of flowers. Each group will have a pair of bracts and two cymes, each with one to six flowers. The tubular flowers have two lips with five-lobes. The glandular flower is cream in color with dark lining and reaches 1.5 cm in length.

Penstemon deustus - Wikipedia

Penstemon deustus Calflora

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