Snowball Sand Verbena
Abronia fragrans

Family: Four O'Clock (Nyctaginaceae)
AKA: Prairie Snowball, Fragrant Verbena, Sand Verbena
Photo taken on: August 21, 2013
Location: Abiquiu, NM
Life Zones: Plains and foothills
Habitat: Sandy soil

Grows upright and sprawling to 3ft with sticky, hairy stems and fleshy, opposite leaves. The funnel-shaped flowers are fragrant and usually white but can be pinkish. They grow in a ball shaped cluster with papery bracts below and open late in the day.

Flora of North America reference.