is the dried exocarp of unripe or almost ripe Curus grandis
'Tomentosa' or Citrus grandis (L.) Osbeck (Fam. Rutaceae).
The former is commonly known as "Maojuhong", and
the latter "Guangqizhua" or "Guangwuzhua".
Action: To dispel cold,
eliminate damp and phlegm, and arrest emesis or nausea.
Indications: Cough, itching
of the throat and profuse expectoration in colds; nausea,
vomiting and epigastric distension caused by improper diet
or excessive drinking.