P. trifblium is often found growing near in the same woods. The ground-nut refers to its root, a small tuber, sweet and edible, sunk deep into the ground, only unearthed after careful, patient digging.
Dwarf Ginseng, Or Ground-Nut (Punax trifolium)
It is a lovely herb, with little balls of blossoms just overtopping a whorl of 3 leaves, each divided into 3 to 5 sessile leaflets, all on the same leaf-stalk. It is a spring flower, coming with the hepatica in April and May, perfecting later a yellowish fruit. (See illustration, p. 97.)