Definition: Birch leaf consists of the whole or fragmented dried leaves of Betula pendula Roth and/or Betula pubescens Ehrh. as well as hybrids of both species.

• 本品为桦木科植物垂枝桦Betula pendula Roth和/或柔毛桦Betula pubescens Ehrh.；以及种下变异植物的干燥的完整或破碎的树叶。