Penstemon ellipticus aka Alpine Beardtongue

Penstemon ellipticus is a low, evergreen shrub native to North America. It belongs to the plantain family, Plantaginaceae. It is not native to Great Britain or Ireland. The supplied sources give no more precise account of its native range. Its small size and spreading form set it apart from taller shrubs. Virginia Tech describes a plant that forms a low mat. It reaches up to 1 foot (0.30 metres) tall. The sources give no figure for its mature width.

The leaves sit in opposite pairs along the stems. Each leaf is simple, with one blade rather than separate leaflets. The blades have an elliptical outline and a leathery texture. They measure about 0.04–0.06 feet (0.013–0.019 metres) long. Their upper sides are green, while the undersides look slightly paler. Leaf edges vary from smooth to finely toothed. The evergreen foliage remains a feature beyond the flowering season. Young twigs have a mix of red and green tones. They turn light brown as they age. The bark is also light brown.

Purple flowers appear in early summer at the ends of stems. They grow in loose clusters rather than dense flower heads. Each flower has a tubular shape. Flowers can reach about 0.08 feet (0.025 metres) long. Their colour provides a contrast with the green foliage. Virginia Tech notes the appeal of the flowers. The fruit is a brown capsule with two valves. This dry capsule differs in form from a fleshy berry. The supplied account gives no further detail about seeds or fruiting time.

The documented garden features are its low mat, evergreen leaves, and purple blooms. These describe its appearance, but do not establish its growing needs. The supplied evidence gives no species-level guidance on sun, soil, or water. It also gives no hardiness rating or supported planting uses. No typical garden height range appears beyond the stated upper height. The sources do not identify pests, diseases, or other growing problems. They provide no evidence about edible parts or medicinal use. They also make no species-level claim about toxicity to people or pets. Those gaps should not be read as proof of safety.