The Delicate Arch Viewpoint Road is closed. All other roads and trails remain open, but many trails are snowy, icy, and dangerous. Please inquire at the visitor center for the most up-to-date conditions.
Construction Update - 11/25/2013
Construction work continues at the Devils Garden parking lot, limiting parking and causing occasional delays. Visitors can avoid the area by turning around at Sand Dune Arch. More »
Tomentose Amsonia (Woolly Amsonia)
Family: Apocynaceae – Dogbane Family
Perennial herbs; 7.9” to 2' (2 to 6 dm) tall
Leaves: alternate; simple; 0.04” to 0.48” (1 to 12 mm) wide
Flowers: 5 bluish-white tube-shaped partly united petals borne in terminal clusters; 5 parted sepals; 5 stamens; bisexual; corolla tube is 0.28” to 0.48” (7 to 12 mm) long
Pollinators: other genera in this family are pollinated by moths and butterflies
Fruits: pair of follicles
Blooms in Arches National Park: April, May
Habitat in Arches National Park: desert shrub communities
Location seen: Cache Valley in Arches National Park; outside Arches National Park on Corona Arch trail
Other: The genus name, “Amsonia”, honors Dr. Charles Amson, an 18th century American physician from Virginia. The species name, “tomentosa”, means “covered with fine, matted hairs” referring to the wool-like covering created by many small, matted, intermingled hairs.
Most plants in this family have milky sap and many are poisonous.
Did You Know?
Edward Abbey worked as a seasonal park ranger at Arches in the late 1950s. His 1968 memoir of this experience, "Desert Solitaire," has become a classic of desert literature.