bush morning-glory, Ipomoea leptophylla

On this Thanksgiving, I tried to think of a plant the Indians ate, and bush morning-glory came to mind.  Indians might think that odd!  They know how tough and bitter these roots are.  And I am thankfull and not starving.  These giant tubers were food for earlier people, but only in difficult times.  They can be three feet long and forty pounds.  They taste a little like sweet potato if you disregard the bitterness and tough texture.  Better to leave these bush-like plants to flower and brighten things up.  Bush morning-glories are a plant of the plains, growing in CO, KS, MT, NE, NM, OK, SD, TX, and WY.  Logan CO CO, 6/25/13.  Morning-glory family, Convolvulaceae.