BETULACEAE, Agardh. (Birch Family)
The paper birch (Betula papyrifera, Marsh.) was encountered in one specimen (AMNH 50.2-1792). The bark was untreated, simply twisted into a cord. In a specimen of Iroquois horsehair embroidery (McGU H49) the bark had received no preliminary treatment, but was used in the raw state.