The source is from the sclerotium of Polyporus umbellatus (Pers) Fries, family Polyporaceae. The sclerotium mostly parasitizes on the rotten root of birch, Chinese sweet gum, etc.. The medicinal material is mainly produced in the areas of Shaanxi, Hebei, and Yunnan, etc., dug and collected in spring and autumn, dried in the sun, cut into pieces and the crude one is used.

Medicinal Properties: Sweet and bland in flavor, mild in nature and attributive to the kidney and bladder meridians.

Actions: Promote diuresis to resolve dampness.

Application
The herb is used for dysuria, edema, diarrhea, and turbid stranguria, etc.. Its action of promoting diuresis is stronger than that of Fuling (Poria), but it has no action of invigorating the spleen. Therefore, to treat edema syndrome due to spleen-deficiency, it must be combined with Fuling (Poria), Baizhu (Rhizoma Atractylodis Macrocephalae), and Zexie (Rhizoma Alismatis), etc., such as Siling San (Powder). For dysuria due to yin-deficiency, combined with Zexie (Rhizoma Alismatis) , Huashi ( Talcum ), Ejiao (Colla Corii Asini ), etc., such as Zhuling Tang (Decoction).

Usage and Dosage:
5 - 10 g is used in decoction for oral use.