Humulus lupulus - Information on the hop, its uses, chemistry, description, ecology, cultivation and harvesting. Humulus lupulus - Illustration of leaf and fruits. Humulus lupulus - Information on this species with photographs of the twining stems and leaves. Humulus lupulus - Photographs, Wisconsin range map, taxonomic synonyms and links to additional resources for the common hop. From the Wisconsin State Herbarium. Humulus lupulus: Hops - Research project by Andrew Sewalish at the University of Wisconsin-LaCrosse. Humulus lupulus - Information on this species including its characteristics and cultivation, and a photograph of leaves and fruits. Hops: Humulus lupulus - Information on this plant and its wild relatives, and its cultivation in early and modern times.