Medicinals

fú píng / 浮萍 / 浮萍 / duckweed;

Latin pharmacognostic name: Spirodelae Herba

Alternate English names: great duckweed

Alternate Chinese names:píng; 水萍 shuǐ píng; 水花 shuǐ huā; 薸 piāo; 小萍子 xiǎo píng zǐ; 水藓 shuǐ xiǎn; 九子萍 jiǔ zǐ píng

Origin: Plant

Use: medicinal

Category: Exterior-resolving agents / Cool acrid exterior-resolving agents

Properties: Acrid; cold.

Channel entry: lung and bladder channels.

Indications:

Dosage & Method:

Oral: 3–10g in decoctions.

Warning:

Do not use to treat exterior vacuity with spontaneous sweating.

Notes:

Frequently, the product sold as fú píng in the West is not the plant listed in the Chinese pharmacopoeia, but rather is Pistiae Herba (from Pistia stratioides), a common substitute in Southern China. Also known as dà fú píng (大浮萍), Pistiae Herba has the same nature and flavor as fú píng (Spirodelae Herba), but it has slightly different actions and indications. Dà fú píng (Pistiae Herba) cools and quickens the blood, and also disinhibits urine and expels dampness. It treats dormant papules (urticaria), cinnabar toxin (erysipelas), water drum, damp sores, injury from knocks and falls, and innominate toxin swellings (localized pain and swelling that suddenly appears on any part of the body). It is decocted at a dose range of 9–15g and may also be applied topically as a wash.

Product Area:

Shānxī and Héběi.

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