"A second Hell Creek Cannabaceae species belongs to the genus including modern hops (Humulus). These are climbing vines rather than weak-stemmed shrubs like their relatives and can be found creeping over slopes and trunks in the forests."

― Saurian encylopedia

Humulus is a genus of the family Cannabaceae which is consisted by the plants known as hops. It is quite possibly a edible plant for the Hell Creek's herbivores.