1, as the dried bulb of Liliaceae, Fritillaria Fritillaria is mainly distributed in the Changbai Mountain range in the northeast and the southern mountainous area of Xiaoxing 'anling, mainly producing Heilongjiang, Jilin, Liaoning, Shanxi, Shaanxi, Hebei and other provinces.

2. Bulbus Fritillariae Cirrhosae is the dried bulb of Liliaceae plants, such as Bulbus Fritillariae Cirrhosae, Bulbus Fritillariae Violae, Bulbus Fritillariae Gansu, Bulbus Fritillariae Cirrhosae, etc. According to its characteristics, the first three kinds are also called pine shells and green shells, while the last three kinds are also called fire shells, and the latter is also called Bulbus Fritillariae Cirrhosae, which is generally called Bulbus Fritillariae Cirrhosae.

3. Both of them have expectorant effects, but Fritillaria cirrhosa has the effect of clearing away heat and toxic materials, while Pingbei has the effect of dispelling wind and relieving pain. Fritillaria cirrhosa is mostly used for cough due to lung yin deficiency and Pingbei is mostly used for wind-heat cough.