Largeleaf Gentian Root is the dried root of Gentiana macrophylla Pall, Gentiana straminea Maxim,

Gentiana crassicaulis Duthie ex Burk. or Gentiana dahurica Fisch. (Fam. Gentianaceae). The drug

derived from the first three species falls into two groups and are known as "Qinjiao" and

"Mahuajiao" respectively. The drug derived from the last one is commonly known as "Xiaoqinjiao".

The drug is collected in spring and autumn, removed from soil. "Qinjiao" and "Mahuajiao" are then

softened in the sun, piled up to evaporate the water contained in the drug until a reddish-yellow or

greyish-yellow colour is developed on the surface, spread out and dried in the sun; or dried in the

sun directly after collection; as for "Xiaoqinjiao", the black bark is rubbed off freshly and dried in the

sun.

Largeleaf Gentian Extract Powder