We now refer to the peanut pod, including, of course, the kernel, and not the vine or hay.
"The Peanut Plant" by B. W. Jones
Many leguminous plants, such as alfalfa, cowpeas, peanut vines, etc., may be cut fine and used as an absorbent for molasses.
"The Philippine Agricultural Review" by Various
I'll dig the vines and you can pick out the peanuts and fill your knapsack.
"Little Jack Rabbit and Chippy Chipmunk" by David Cory