Lu Gen
Phragmites communis Trin.
โฏ TCM Properties
Clears Heat and Drains Fire; Generates Fluids and Relieves Thirst; Eliminates Irritability; Stops Vomiting; Promotes Urination; Expels Phlegm and Discharges Pus; Vents Rashes
Western Herbalism Properties
Botanical Description
Phragmites australis (Cav.) Trin. ex Steud. (Poaceae), commonly known as common reed and including the form formerly named Phragmites communis, is a tall, robust, rhizomatous perennial grass with a near-cosmopolitan distribution in temperate and tropical wetlands. It forms dense stands in marshes, ditches and along slow-moving water bodies. Plants spread by stout, hollow, creeping rhizomes and stolons, producing erect, hollow, smooth, unbranched culms 2 to 6 meters tall and up to 1.5 cm in diameter. The leaves are long, flat, lanceolate to linear blades 20 to 60 cm long and 2 to 4 cm wide, gray-green and arranged in two ranks, with a smooth, somewhat clasping sheath. The inflorescence is a large, plumose, somewhat one-sided terminal panicle 15 to 40 cm long, purplish to tawny at maturity, with many spikelets each bearing long silky hairs. The fresh or dried jointed white rhizomes, excavated in spring or autumn, constitute Lu Gen in Chinese medicine.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 6-15g | Daily | โ | โ | โ |
Cultural & Historical Context
Traditional Chinese Uses
Lu Gen (reed rhizome) is a sweet, cold herb that gently cools and moistens without burdening digestion. It clears Heat from the Lungs and Stomach to address fever, thirst, dry mouth, and painful swallowing of early respiratory illness. Its mild action on the Stomach also settles nausea and vomiting caused by Stomach Heat. Because it simultaneously generates fluids and promotes urination, it helps restore fluid balance during febrile illness.
Traditional American Uses
None Documented
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.