hops -
twining perennials having cordate leaves and flowers arranged in conelike spikes; the dried flowers of this plant are used in brewing to add the characteristic bitter taste to beer
vine a plant with a weak stem that derives support from climbing, twining, or creeping along a surface
genus humulus,
humulus hops: hardy perennial vines of Europe, North America and central and eastern Asia producing a latex sap; in some classifications included in the family Urticaceae