Introduction of Fu Pinɡ:Herba Spirodelae or Common ducksmeat Herb.

TCM Herbalism:Medicinals and Classifications. ✵The TCM herbalism is also known as pharmaceutics of Traditional Chinese Medicine, or Chinese pharmaceutics, is the branch of health science dealing with the preparation, dispensing, and proper utilization of Chinese herbs. It is majorly composed of Introduction of Chinese Medicinals, Classification of Chinese Herbs, Formulas, and Patent medicines.

Classifications of Herbs:Pungent-cool Exterior-releasing Herbs.

 TCM Herbs Icon01 Introduction: Pungent-cool exterior-releasing herbs: an agent or substance herbs pungent in flavor and cool in property, which is usually used for treating a wind-heat exterior syndrome.

Herba Spirodelae(Common ducksmeat Herb).

Common ducksmeat Herb:herb photo Pin Yin Name: Fú Pínɡ.
 English Name: Common ducksmeat Herb,Duckweed.
 Latin Name: Herba Spirodelae.
 Property and flavor: cold, pungent.

 Brief introduction: The herb Herba Spirodelae is the dried entire plant of Spirodela polyrrhiza(L.) Schneid.(family Lemnaceae), used to promote eruption for measles, to relieve itching for urticaria, and to induce diuresis for edema.

 Botanical source: The herb Herba Spirodelae(Common ducksmeat Herb) is the dried entire plant of Spirodela polyrrhiza(L.) Schneid., it is a plant of the Lemna L. genus, the Lemnaceae family of the Arales order. It is also known as Herba Spirodelae, Common ducksmeat Herb, Fú Pínɡ.

 Spirodela polyrrhiza L.Schneid.:plant in pond Common official herbal classics and other famous herbal classics defined the herb Herba Spirodelae(Common ducksmeat Herb) as the dried entire plant of :(1). Spirodela polyrrhiza(L.) Schneid., or (2).Lemna minor L. These 2 commonly used species are introduced as:

(1).Spirodela polyrrhiza(L.)Schneid.

 Botanical description: It is also known as Zǐ Píng or purple duckweed, perennial small herb, floating on the surface. Roots 5~11 fascicles, slender, fibrous, 3~5 cm long. New shoots are produced on one side of the root's shoot, which is connected to the parent by a thin stalk before it separates. Leaves flat, solitary or 2~5 clustered, broadly obovate, 4~10 mm long, 4~6 mm wide, apex obtuse, slightly concave at above part, dark green, purplish at bottom part, palmate veins 5~11 inconspicuous. Inflorescence grow within the margin of leaf body; Flowers and plants, male and female with forest; Bud pouch, short, 2-lipped, with 2 male flowers and 1 female flower, without perianth; Male flower has 2 stamens, anther 2 rooms, filaments fine; 1 female flower's pistil, ovary sessile, 1 locule, 2 ovules erect, style short, stigma flattened or annular. Fruit round, the margin has a wing. Its flowering period is from April to June, fruiting from May to July.

 Ecological environment: the plant grows in other marshes, paddy fields, bays, or still waters. It widely distributes in the north and south of China.

 Growth characteristics: The plant grows in lakes, ponds or paddy fields, it can be found all over the country of China.

 Characters of herbs: The herb is flat, oval or ovoid, 2~5 mm in length. Single scattered or 2~5 in lumps, the upper surface is pale green to grayish-green, with a small concavity on the side, neat or slightly curled edges. The lower surface is purple-green to purple-brown, with several fibrous roots. It is light, soft, and fragile. The smell is slight and the taste is light.

 Pharmacological actions: ①. Cardiovascular effects; ②. Antipyretic effect; ③. Other effects: killing effects on culex pipium larvae and mosquito pupae in the laboratory and the field.

 Medicinal efficacy: Induce perspiration and relieve the exterior syndrome, prompt diuresis and eliminate swelling, clear heat and detoxification, indicated for the wind-heat exterior syndrome, measles without adequate eruption, urticaria(hidden rashes) and itching, edema and oliguria, uroschesis(retention of urine, difficulty in urination), skin ulcer and tinea, erysipelas(inflammatory disease with redness of skin), scald or burns(empyrosis), etc.

 Administration of Herba Spirodelae(Fú Pínɡ): 
Reference: Administration Guide of Herba Spirodelae(Fú Pínɡ)
TCM Books: Internally:3~9 grams,Externally:proper amount,immersion cleaning with water decoction(CP), or water decoction,1~2 qian(about 3~6 grams),fresh herb 0.5~1 liang(about 15~30 grams),extract juice or prepare to pill,powder.Externally: fumigation wash the affected area with water decoction, grinded into a fine powder and apply stick(DCTM), or water decoction, 3~9 grams, fresh herb dosage could be 15~30 grams; extract juice, or grinded to a fine powder and prepared to pill, powder.Externally: fumigation wash the affected area with water decoction, grinded into fine powder and apply stick(CHMM).

(2).Lemna minor L.

 Lemna minor L.:flowering plant in pond Botanical description: It is also known as Fú Pínɡ or duckweed, small floating herbs. 1 root, 3~4 cm long, slender, root sheath wingless, root crown obtuse or truncated. Leaves symmetrical, obovate, elliptic or subcircular, 1.5~6 mm long, 2~3 mm wide, smooth above, green, opaque, yellow or purple below, full-line, with inconspicuous 3 veined veins. The leaf has a capsule on the backside, and the new leaf emerges from the capsule, joining the parent with a very short stalk, and then falling off. Flowers unisexual, hermaphroditic, grow at lobulated edges; Bud winglike, with 1 female flower, 2 male flowers; Male anthers 2-loculed, filaments slender; Female flowers with 1 pistil, ovary giant, 1 ovule curved. Fruit subgyro, wingless. 1 seed, with raised endosperm and 12~15 irregular convex veins.

 Ecological environment: the plant grows in ponds, paddy fields, lakes, or still water and often mixes with purple duckweed. It distributes throughout China from north to south area.

 Growth characteristics: The plant grows in ponds, paddy fields, lakes, or standing water, often mixed with purple duckweed.

 Characters of herbs: lobulates are ovoid, ovoid or ovoid ellipsoid, 3~6 mm in diameter. Single scattered or 2~5 pieces of the collection, the upper surface is light green to grayish-green, the lower surface is green to purple-brown, edge neat or slightly roll, the upper surface on both sides of a small depression, the lower surface of several roots. Light and fragile. Slight smell, mild taste. The herb color green, back purple is the best.
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  • 1.Introduction of Fu Pinɡ:Herba Spirodelae or Common ducksmeat Herb.
  • 2.TCM Books:DCTM(Dictionary of the Chinese Traditional Medicine),CHMM(Chinese Herbal Materia Medica).

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