VOL. 4, PL. LXVII.
EXPLANATION OF PLATE LXVIII.
Figure 1. Poison Ivy (Rhus toxicodendron). Source of medicine. See page [354].
Figure 2. Box Elder (Acer negundo). Source of medicine and food. See pages [353], [394].
BULL., PUBL. MUS., MILW.
VOL. 4, PL. LXVIII.