1. Aliases

Half sided maple, root of turning white leaf, root of white backed maple, maple lotus, half sided maple, yin-yang leaf, three fearless, iron palm, white backed maple, half wutong, fanzhang hemp, big leaf half maple.
2. Plant morphology
Evergreen trees can reach a height of up to 20 meters. The bark is gray or grayish brown, and the small branches are covered with red or yellow pubescence. The leaves are heterotypic, leathery, and the leaves on young trees or sprouting branches are shield shaped, palmate with 3-5 deep cracks; The leaves of adult trees are elongated to oval shaped; The top is blunt or gradually pointed, the base is blunt, truncate or obliquely heart-shaped, and the bottom is densely covered with yellow brown fur. Stipules linear oblong. Flowers solitary or 2-4 forming axillary cymes; Bracteoles scaly, closely attached to sepals; Sepals linear, both sides covered with hairs; Petals 5, bluish white, oblanceolate, equal in length to sepals; 15 stamens, 5 degenerated stamens, linear; Ovary 5-loculed, covered with hairs. The capsule is woody, round and ovate in shape, densely covered with yellow brown hairs. Seeds with membranous long wings.
3. Origin distribution
Born in sparse or dense forests on slopes, plains, and hills. Distributed in Guangdong, Hainan, Fujian, Guangxi, Taiwan and other places.
4. Harvesting and processing
It can be harvested all year round. Dig out the roots, shake off the soil, wash, chop into pieces, and sun dry.
5. Characteristics of medicinal herbs
Half maple lotus is in an irregular block shape. The surface of the cork skin is gray brown or reddish brown, with longitudinal wrinkles and warty skin pores. Hard texture. The broken skin is brownish brown with fine texture. The longitudinal section has longitudinal texture and irregular longitudinal cracks, and is fibrous. Mild in flavor and slightly astringent in taste.
6. Nature, taste, and meridian tropism
Sweet and slightly astringent in taste, with a warm nature. Return to the Kidney Meridian and Liver Meridian.
7. Effect and function
Dispelling wind and dampness, promoting blood circulation and reducing swelling. Belonging to the sub category of dispelling wind and dampness medicines, it is a dispelling wind and dampness dispersing cold medicine.
8. Clinical applications
The dosage of Banfeng lotus is 15-30 grams, decoct or soak in wine. Used to treat wind cold dampness, rheumatic flaccidity, lumbar muscle strain, hand and foot paralysis, postpartum wind paralysis, poor joint flexion and extension, and swelling and pain caused by falls and injuries.
9. Pharmacological research
The ethanol extract of Banfenghe has significant anti-inflammatory effects and mild analgesic effects.
10. Chemical composition
Eleven compounds were isolated from the roots of the half maple lotus and identified as: 3-acetyloxy oleanolic acid methyl ester (1), β - sitosterol (2), 3-acetyloxy oleanolic acid (3), 2 α, 3 β - dihydroxy-20 (29) - ene lupin-28-acid (4), (24R) -5 α - stigmaster-3,6-dione (5), betulinic acid (6), stearic acid (7), palmitic acid (8), 3-keto oleanolic acid (9), ajianolic acid (10), and carotenoids (11).
11. Taboos for use
It is not yet clear.
12. Compatibility prescription
To treat rheumatic joint pain and lower back and leg pain: ① 30g each of Banfenghe root and Fenghe pear root. Take stewed pork bones or lean pork together 500 grams of half maple lotus stem. Slice and soak 2500 milliliters of wine, use after 10 days. Take 3 times a day, 5-30 milliliters each time, and apply to the affected area until the skin turns red. (National Compilation of Chinese Herbal Medicine)
The content of the article is for clinical reference only. Non professionals in traditional Chinese medicine are not allowed to try medication.