Wild Hops
Humulus lupulus

Family: Hemp (Cannabaceae)
AKA: Common Hop, American Hop
Photo taken on: August 14, 2010
Location: Wet Mountains, Eastern CO
Life Zones: Plains to foothills
Habitat:  Open woods, gardens

Grows to 30ft long climbing on other plants with stiff hairs on stout stems. The fruit (hop) is cone-like, green and papery.

Flora of North America reference.