• Double O Arch


    National Park Utah

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  • 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.

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    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 »

Bur Buttercup

Ranunculus testiculatus

Ranunculus testiculatus

Synonym: Ceratocephalus testiculatus

Family: Ranunculaceae – Buttercup Family

Annual herbs; dicot; 0.6” to 4” (1.5 to 10 cm) tall; hairy

Leaves: basal; simple; deeply 3-parted; 0.12” to 1.6” (0.3 to 4 cm) long, 0.12” to 1.2” (0.3 to 3 cm) wide

Flowers: 2 to 5 yellow petals, 0.14” to 0.31” (3.5 to 8 mm) long; 5 hairy green sepals; stamens 5 to numerous; pistils 5 to many; perfect

Pollinators: other Ranunculus species are pollinated by insects

Fruits: hairy achenes; most fruits in this family are poisonous because of the volatile acrid oil - protoanemonin

Blooms in Arches National Park: March, April, May

Habitat in Arches National Park: disturbed areas and dry areas

Location seen: Windows, Delicate Arch trail

Other: The genus name, “Ranunculus”, means “small frog” which refers to the many species of this genus that grow in moist locations. The genus name, “Ceratocephalus”, is from the Greek “keras” which means "a horn" and the Greek “kephale” meaning "head". The species name, “testiculatus”, refers to the ovate and solid shape.

This plant is a weed and was introduced from Eurasia. Several species in this family are grown as ornamentals, others provide drugs, and some are poisonous.

Did You Know?

Pine Tree Arch

There are over 2,000 cataloged arches in Arches National Park. In order to be considered an arch, an opening must measure at least three feet (in any direction).