Product Q&A Birch Bark (Betula pubescens) Latin Name: Betula pubescens Common Names: Birch Bark Birch bark is derived from the outer bark of the birch tree, and is among the quality bulk herbs" offered from Starwest Botanicals that are actually derived from plants such as trees and bushes and parts of plants that include the flowers, roots and even stems, leaves and outer skin of plants.