Pinyin: Kudiding
Aliases
Diding, Didincao, Zihuadiding, Biandouyang
Source
1. For pneumonia: Renshen 6 g, decoct in water and take orally.Corydalis bungeanaTurcz. dried whole herb.
Botanical Description
A perennial herbaceous plant, 10-30 cm tall, essentially glabrous (hairless). Roots slender and straight, 3-10 cm long, sparsely branched, light yellowish-brown. Stems 3-4, tufted. Cauline leaves alternate; petiole 0.4-4 cm long; leaf blade 1.5-3.5 cm long, grayish-green, bi- to tri-pinnatisect, ultimate segments obovate, upper part often 2-cleft into 3 teeth. Raceme terminal, 1-6.5 cm long, reaching up to 12 cm in fruit; bracts leaf-like, pinnately lobed; pedicel 1-3 mm long; sepals 2, small, caducous; flowers pale purple, 10-12 mm long; petals 4, outer 2 with hooded apex and narrow base forming a spur, spur 4.5-6.5 mm long, inner 2 petals small; stamens 6, filaments of each 3 fused into 2 bundles; ovary narrowly ellipsoid, pubescent. Capsule narrowly compressed-ellipsoid, 1.2-2 cm long, with persistent style, containing 7-12 seeds. Seeds subglobose, 1.5-2 mm in diameter, black, smooth, with a white membranous caruncle. Flowering April to May, fruiting May to June.
Habitat and Distribution
Born in open fields, beside houses in grassy areas, or on hills and slopes under sparse forests. Distributed in Liaoning, Inner Mongolia, Hebei, Shanxi, Shaanxi, Ningxia, Gansu, Shandong, Henan, and other regions.
Harvesting and Processing
Harvest during the summer flowering and fruiting period, remove impurities, and sun-dry.
Chemical Constituents
This product contains racemic and dextrorotatory corynoline, acetylcorynoline, tetrahydrocoptisine, protopine, dextrorotatory isocorynoline, tetrahydrocorydalmine, dihydrosanguinarine, and acetylisocorynoline.
Pharmacology
In vitro, it inhibits Streptococcus group A, Streptococcus pneumoniae, Moraxella catarrhalis, Shigella, Escherichia coli, and Pseudomonas aeruginosa; it also inhibits Staphylococcus and Sarcina; additionally, it inhibits the Sendai strain of parainfluenza virus.
Properties and Channel Entry
Bitter, cold. Enters the Heart, Liver, and Large Intestine channels.
Functions and Indications
Clears Heat and resolves toxicity, dissipates masses and reduces swelling
Dosage and Administration
Internal use: decoction, 9-15 g; fresh product 30-60 g; or pounded for juice. External use: appropriate amount, pounded for application.
Prescriptions
1. For measles with heat toxin: Kudiding 9 g, Lianqiao 12 g, Juhua 9 g, decoct and take orally. (Qinghai Common Chinese Herbal Medicine Handbook) 2. For chickenpox: Kudiding 6 g, Gancao 3 g, decoct in water and take orally. (Southern Medicine: Chinese Herbal Medicine) 3. For acute jaundice hepatitis: Kudiding and Yinchen 15 g each, decoct in water and take orally. (Shanxi Chinese Herbal Medicine) 4. For dysentery: Kudiding with Huoxiancao and Diyu, decoct and take orally. (Plateau Chinese Herbal Medicine Treatment Manual) 5. For furuncle swelling and pain, cellulitis, erysipelas: fresh Kudiding, mash and apply externally; or Kudiding 15 g, Pugongying 30 g, Lianqiao and Yejuhua 15 g each, Huangqin 9 g, decoct in water and take orally. (Qingdao Chinese Herbal Medicine Handbook) 6. For early finger infection, lymphangitis (red thread furuncle) with redness, swelling, and heat pain: Kudiding and Yejuhua 30 g each, decoct in water and take orally. (Hebei Chinese Herbal Medicine Handbook) 7. For damp-heat sores and ulcers: Kudiding, Jinyinhua, and Pugongying 3 g each, Daqingye 9 g, decoct in water and take orally. (Liaoning Common Chinese Herbal Medicine Handbook)
