Bai He also known as Bulbus Lilii in west, it refers to the dried fleshy petal-like layers of Lilium lancifolium Thunb., Lilium brownii F.E.Brown var. viridulum Baker, or Lilium pumilum DC. In China it is cultivated across the country, especially in Hunan and Zhejiang provinces. Autumn is the best time for harvest.