• Double O Arch

    Arches

    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.

  • 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 »

Musk Mustard (Purple Mustard)

Chorispora tenella

Chorispora tenella

Family: Brassicaceae ( A Utah Flora – Cruciferae) – Mustard Family

Annual herb from a taproot, 0.79” to 1.48' (0.2 to 4.5 dm) tall

Leaves: alternate and basal; simple; 0.2” to 3.4” (0.5 to 8.5 cm) long, 0.04” to 1.12” (0.1 to 2.8 cm) wide; often has hairs

Flowers: 4 pink to lavender petals 0.36” to 0.5” (9 to 12.5 mm) long; 4 sepals; 6 stamens

Pollinators: insects

Fruits: silique (many-seeded capsule)

Blooms in Arches National Park: March, April, May, June

Habitat in Arches National Park: disturbed areas

Location seen: widespread, Arches National Park Visitor Center area, Cache Valley

Other: The genus name, “Chorispora”, is from the Greek “choris” meaning “separate” and “spora” meaning “seed” referring to the separate fruits. The species name, “tenella”, is from the Latin meaning “quite dainty, delicate”.

This is a non-native plant. The musky odor of this plant is evident.

Many plants in this family are weeds and they flower early because they are annual. Many vegetables are in this family– radish, cabbage, cauliflower. A few species of plants in this family are poisonous to livestock.

Did You Know?

Collared Lizard

Lizards, including the colorful collared lizard, are one of the most frequently seen animals at Arches. When not chasing flies or basking in the sun, they are often seen doing what appears to be push-ups. This odd dance might enhance their stereoscopic vision, helping them see what's looking back at them.