Sneezeweed
Hymenoxys hoopesii (Dugaldia hoopesii)

Family: Sunflower (Asteraceae)
AKA: Swamp Sunflower, Orange Sneezeweed, Owl's Claws
Photo taken on: July 11, 2004
Location: Oh-Be-Joyful, GV, CO
Life Zones: Foothills to subalpine
Habitat: Moist meadows

Grows to 2ft with loose clusters of orange-yellow flower heads on branched stems. Leaves have a prominent central vein. Similar to Golden Curlyhead, but it has blooms with drooping petals in clusters.

Flora of North America reference.