Humulus lupulus
 
Common Hop

Leaf and Staminate Inflorescence, Bottom

Shore of Red Deer River near Hudson Bay, SK
24-July-2018

Cannabinaceae: Answers to key questions in Budd's Flora leading to this family. 

herbs; NOT [shrubs or trees]

plants not parasitic on branches of trees, rooted in soil or water

land plants; NOT [water plants]

plants twining, climbing

plants without milky sap

stamens or pistils in separate flowers on the same plant; NOT [stamens and pistils in each flower]

flowers with only one floral ring, with sepals but not petals

female flowers and fruit in catkin-like spikes