“Where the ground-nut trails its vine”
there is hidden something really good to eat under the soft, moist soil
where legions of royal fern, usually standing guard above it, must be
crushed before he digs up the coveted tubers. He would be the last to
confuse it with the Wild Kidney Bean or Bean Vine (_Phaseolus
polystachyus_). The latter has loose racemes of smaller purple flowers
and leaflets in threes; nevertheless it is often confounded with the
ground-nut vine by older naturalists whose knowledge was “learned of
schools.”