• Double O Arch

    Arches

    National Park Utah

Rosemary Mint (Purple Sage; Sand Mint)

Poliomintha incana

Poliomintha incana

Family: Lamiaceae (A Utah Flora – Labiatae) – Mint Family

Aromatic shrubs; strong minty or sage odor; 11.8” to 3.3' (3 to 10 dm) tall; stems usually 4 sided – square in cross section

Leaves: opposite; simple; entire; has dense white hairs; foliage dotted with small glands containing volatile oils; 0.4” to 1.2” (1 to 3 cm) long

Flowers: 5 lavender to whitish (with purple dots on lower lip) united petals (2 fused upper and 3 fused lower), tubular; 2 stamens, 1 pistil; flowers highly ornate in long clusters, heads, or interrupted whorls on the stem; bisexual; bilaterally symmetrical; flowers 0.4” to 0.56” (10 to 14 mm) long

Pollinators: other genera in this family are pollinated by insects (specifically bees)

Fruits: schizocarp breaking at maturity into four one seeded nutlets

Blooms in Arches National Park: April, May, June, July, August, September, October, November

Habitat in Arches National Park: sandy sites in desert shrub and pinyon-juniper communities

Location seen: park road near Courthouse Wash bridge, Petrified Dunes, park road mile 5.5, mile 6.5

Other: The genus name, “Poliomintha”, is from the Greek “polios” meaning “gray” and “menthe” meaning “mint”. The species name, “incana”, means “hairy, hoary, grey or silver colored” referring to the leaves.

This family contains various mints, oregano, marjoram, thyme, sage, basil, catnip, lavender; spices and flavorings.

Did You Know?

Close up of biological soil crust

The dirt is alive! A living crust called "Biological Soil Crust" covers much of Arches and the surrounding area. Composed of algae, lichens and bacteria, this crust provides a secure foundation for desert plants. Please stay on roads and trails to avoid trampling this important resource. More...