tree bearing pear-shaped fruit with a thick woody epicarp.
Bei Qinglongyi, the immature wild pecan epicarp, is a traditional kind of Chinese folk medicine, adopted in the record of "Kai Bao Ben Cao" and "Ben Cao Gang Mu".
Stability testing and compare of the Hydroextracting the Dark Brown Pigment from Walnut epicarp of dry in the sun and by the airing and retting.