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?
Even though graffiti is prohibited by law, rangers and volunteer groups spend hundreds of hours every year removing it in Arches. Please join us in protecting the park by not leaving your mark. If you discover graffiti in the park, please let us know. Otherwise, make memories, take pictures, but leave no visible trace of your visit. More...