Dwarf Evening-primrose (Tufted Evening-primrose; White Tufted Evening-primrose; Morning-lily; Handkerchief Plant)
Family: Onagraceae (Evening-primrose Family)
Perennial herbs from taproots; stems to 2' (6 dm) long
Leaves: leaves in a basal rosette with some leaves possibly alternate along stem; simple; margin entire, toothed, lobed or cleft to the midline; 0.6” to 12” (1.5 to 30 cm) long, 0.2” to 1.6” (0.5 to 4 cm) wide
Flowers: 4 white petals, 4 sepals; 8 stamens; stigma 4 lobed; bisexual; usually radially symmetrical; fragrant; petals 0.8” to 2.4” (2 to 6 cm) long; flowers are usually open in late afternoon or evening; petals fade to pink after pollination
Pollinators: hawkmoths (White-lined sphinx moth - Hyles ), and bees (specifically Lasioglossum, Centris, Xylocopa, Andrena)
Fruits: 4 chambered capsule
Blooms in Arches National Park: March, April, May, June, July, August, September, October, early November
Habitat in Arches National Par : desert shrub, grassland and pinyon-juniper communities
Location seen: park road mile 0 to 8
Other: The genus name, “Oenothera”, means “wine-scented” and refers to the use of the roots in winemaking. The species name, “caespitosa”, means “low growing” and refers to the stature of the plant flowers.
Did You Know?
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).