The entry for green tea states, in parentheses, that it is "(Oriental herbal tea)." This is incorrect. Green tea is not herbal -- it is from the same plant, Camellia sinensis, as black tea, but is processed differently.
Thank you for flagging this up. I've amended the sense. This correction will go to our translation teams for review. Once that's been done, it will appear in the dictionaries when they are next updated.