• Double O Arch

    Arches

    National Park Utah

There are park alerts in effect.
show Alerts »
  • Delicate Arch Viewpoint Inaccessible

    Wolfe Ranch and the hiking trail to Delicate Arch are open, but flood waters and mud have blocked the road to Delicate Arch Viewpoint.

  • Safety in Bear Country

    Black bears have been seen near Devils Garden Campground. Don't lure or feed them. Dispose of trash in designated receptacles; don't leave it in bags or other soft containers. Store food in vehicles or hard containers when not being prepared or consumed. More »

Eaton's Penstemon (Scarlet-bugler Penstemon)

Penstemon eatonii

Penstemon eatonii

Family: Scrophulariaceae - Figwort Family

Perennial herbs; some parasitic or semi-parasitic; 9.84” to 3.3' (2.5 to 10 dm) tall

Leaves: opposite and basal; simple; entire or curled or wavy; lower leaves 1.2” to 7.6” (3 to 19 cm) long, 0.32” to 2.2” (8 to 55 mm) wide

Flowers: 5 united lobed tubular (irregular flowers with upper lip 2 lobed, lower lip 3 lobed) red petals; 5 sepals; 4 fertile stamens, a fifth stamen is sterile; flowers hanging downwards; flowers 0.6” to 1.32” (15 to 33 mm) long

Pollinators: hummingbirds; other genera in this family are pollinated by insects (specifically bees, flies, moths and butterflies)

Fruits: 2 chambered capsule (dry fruit)

Blooms in Arches National Park: April, May, June

Habitat in Arches National Park: desert shrub and pinyon-juniper communities

Location seen: park road mile 0 to 2.5, Park Avenue, Delicate Arch trail, Fiery Furnace

Other: The genus name, “Penstemon”, is from the Greek “pen” which means “almost” and “stemon” which means “thread” which refers to the stamens (only 4 of the 5 stamens produce pollen; the fifth stamen is sterile, so it is almost a stamen). The species name, “eatonii”, honors David Cady Eaton (1834-1885), an American botanist.

The genus Penstemon is large and complex. The family is important because it has many ornamentals and cardiac glycosides can be derived from foxglove.

Did You Know?

Close up of biological soil crust

The dirt is alive! A living crust called "Biological Soil Crust" covers much of Arches and the surrounding area. Composed of algae, lichens and bacteria, this crust provides a secure foundation for desert plants. Please stay on roads and trails to avoid trampling this important resource. More...