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.
Family: Polygonaceae (Buckwheat Family)
Subshrubs; 0.8” to 3.2” (2 to 8 cm) tall
Leaves: alternate and basal; simple; 0.2” to 0.6” (5 to 15 mm) long, 0.04” to 0.12” (1 to 3 mm) wide; woolly with hairs
Flowers: 0 petals; 3-6 sepals, usually 5 or 3+3, petaloid; 2-9 stamens in 2 series; 1 pistil; small flowers in clusters; flowers white to pink or rose; flowers 0.08” to 0.16” (2 to 4 mm) long
Pollinators: other Eriogonum species are pollinated by bees
Blooms in Arches National Park: late April, May, June
Habitat in Arches National Park: desert shrub, pinyon-juniper and grassland communities; often in sand
Location seen: Windows primitive trail, Salt Valley
Other: The genus name, “Eriogonum”, means “woolly knee” and refers to the hairs located at the swollen joints of many species of this genus. The species name, “bicolor ”, means “of two colors”.
This plant is endemic to Carbon, Emery, Garfield, Grand (the type specimen was collected in Thompson Springs), San Juan, Sevier, and Wayne Counties in Utah.
This family's scientific name, “Polygonaceae”, is derived from the Greek words “poly” which means "many" and "goni" which means "joint", a reference to many species that have swollen nodes or joints.
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...