Acnida cannabina.

Botanical name: 

ACNIDA CANNABINA, L. Willow Hemp. This was the best white hemp of the Northern Indians, who made nets, ropes, thread, and purses with it. The seeds were eaten by them.

Medical Flora, or Manual of the Medical Botany of the United States of North America, Vol. 2, 1830, was written by C. S. Rafinesque.