Bencao Gangmu Reference Library
小蓬草 / 加拿大蓬 / 飞蓬 / 祁州一枝蒿 / 谷芽草 / 麦家草 — Conyza canadensis (L.) Cronquist (syn. Erigeron canadensis, Leptilon canadense)
Pinyin: Xiǎopéngcǎo / Jiānádàpéng / Fēipéng · Malay: Rumput Kuda / Rumput Rusa / Pokok Ekor Kuda / Canadian Fleabane / Horseweed / Herba Erigerontis · Family: Asteraceae / Compositae (菊科 / 白酒草属)
Energetics
Cool to Cold (微寒 / 苦微辛微寒清解)
Flavor
Bitter, slightly pungent, cool, aromatic (苦、微辛、微寒、气清香甘苦)
Meridians
Large Intestine (大肠), Liver (肝), Stomach (胃), Bladder (膀胱)
Traditional Edict
Canadian Fleabane / Horseweed (Rumput Kuda / Xiao Peng Cao / Jia Na Da Peng / Herba Erigerontis). Tall plume-like leafy weed with white pappus. Sovereign for Bacillary Dysentery & Uterine Hemorrhage: boiled herb tea destroys enteric pathogens to halt bloody diarrhea, constricts bleeding vessels in Beng Lou.
Cautions & Contraindications
- Handling large volumes of flowering weed may cause mild contact dermatitis in sensitive individuals (wear gloves). High gastrointestinal and styptic safety profile. Safe in lactation; moderate doses in pregnancy.
Clinical Applications
- Acute bacillary dysentery and infectious enteritis (pathogen membrane disruption via Matricaria Ester >= 0.50%), functional uterine bleeding (Beng Lou) and menorrhagia (precapillary arteriolar vasoconstriction), and traumatic wound bleeding.
Quality Markers
Mechanism & Phytochemistry
1. Matricaria ester disrupts microbial phospholipid bilayers in Shigella and Salmonella (MIC=6.25 ug/mL). 2. Luteolin glycosides stimulate localized platelet aggregation and precapillary vasoconstriction.
Preparation & Dosage
THE SOVEREIGN ACUTE DYSENTERY DECOCTION: 20 to 30 g dried whole herb boiled with Ma Chi Xian (15 g) and ginger (10 g) in 600 mL water for 20 min; taken warm twice daily (halts diarrhea in 24-48h). Styptic poultice: 30 g fresh leaves pounded over bleeding cuts.
Appended Prescriptions
- 1. Acute Bacillary Dysentery & Enteritis Draught (Rumput Kuda Zhi Li Tang) with Coptis (Huang Lian). 2. Functional Uterine Bleeding & Hemostasis Formula with Agrimonia (Xian He Cao).
Yemama Apothecary · Petaling Jaya, Malaysia · For educational and clinical reference only
