✵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:Dispelling Wind-Damp Herbs.
Introduction: Dispelling Wind-Damp Herbs: an agent or substance herbs that dispels wind and damp, mainly for relieving rheumatism and related conditions.
✵Till the date Oct 10th,2019, there are totally  kinds of common TCM herbs,  kinds of related plant species, are recorded in this category. These dispelling wind-damp herbs are briefly introduced separately:
Cortex Erythrinae(Coral-bean Bark).
Brief Introduction: The herb Cortex Erythrinae is the dried bark of Erythrina variegata L.var.orientalis(L.) Merr.or Erythrina arborescens Roxb.(family Legumonisae), used to dispel wind-damp, unblock the collateral meridians and relieve itching in cases of rheumatalgia, and also externally for treating neurodermatitis and chronic eczema. The herb is commonly known as Cortex Erythrinae, Coral-bean Bark, Hǎi Tónɡ Pí.
✵Famous herbal classics defined the herb Cortex Erythrinae(Coral-bean Bark) as the dried bark of (1). Erythrina variegata L.var.orientalis(L.) Merr., or (2). Erythrina arborescens Roxb. They are plants of the Erythrina. Genus, Leguminosae family, Rosales order. These 2 commonly used species are introduced as:
(1).Erythrina variegata L.var.orientalis(L.)Merr.: It is commonly known as Cì Tóng. Large trees, up to 20 meters high. Bark grayish brown, branches yellowish to drab, densely gray tomentose, with black conical spines, shed after two or three years. Leaves alternate or clustered in branches; 2 stipules, linear, 1~1.3 cm long, caducous; 3 compound leaves; Lobules broadly ovate to obtuse ovate, 10~15 cm long, apical lobules broadly longer, apex acuminate and obtuse, base sub truncate or broadly lozenge, both veins sparsely hairy. Racemes ca. 15 cm long, tomentose; Pedicels 7~10 cm long; Calyx Buddha flame bract, 2~3 cm long, calyx mouth oblique, dorsally dehiscent to base; Corolla saucer, bright red, flag 5~6 cm long, wing and keel nearly equal, shorter than calyx; Male blue 10, dichromatic, filament mauve, 3~3.5 cm long, anther yellow; 1 style, pale green, stigma undivided, densely with soft purple hairs. Pod beaded, slightly curved. 1~8 seeds, spherical, dark red. It is flowering in March.
Ecological Environment: It grows in wild or cultivated trees. It is distributed in the middle reaches area of the Yangtze River, Zhujiang river area, southwest area, Taiwan, and other areas of China.
Trait identification: It is semi-cylindric or platy, slightly curly on both sides, about 40 cm long, 0.25~1.5 cm thick, with yellowish-brown to brownish-black outer surface, often with different width and width of the longitudinal groove. The cork of old bark is thicker, the cork is sometimes scraped away, the surface of the cork is rough with yellow pores, and is scattered with spikes, or the round scar after removing the spikes, the spikes are long and conical, 5~8 mm high, apical and acute, the base is 5~10 mm in diameter. The inner surface is yellowish-brown, relatively flat, with fine longitudinal reticulation. Root bark without a thorn. Tough, easy longitudinal crack, not easy to break, section light brown, crack sheet. Slight smell, taste bitter.
(2).Erythrina arborescens Roxb.: It is commonly known as Qiáo Mù Cì Tóng. Trees, 7~8 meters tall. Bark has thorns. Trifoliate, lobules oblate, 10~20 meters long, 8-19 meters wide, apex acute, base sub truncate, both surfaces glabrous; The petiole is stout. Racemes axillary, flowers densely on upper part of total pedicels; Inflorescence axis and pedicels glabrous; Calyx 2-lipped, glabrous; Corolla red, up to 4 cm, wing short, only 1/4 of the length of the flag, keel lozenge, longer than the wing, no claws; 10 stamens, 5 long, 5 short; Ovary stipitate, with yellow hairs. Pod fusiform, slightly curved, apex beaked, base stipitate, ca. 10 cm long, ca. 1.2 cm wide.
Ecological Environment: the plant grows in gullies or grassy slopes. Its is distributed in Sichuan, Guizhou, Yunnan, and other areas.
Trait identification: Basically the same as the bark of Erythrina variegata, a horizontal strip or flat small square rolled inward, 3~6 mm thick, the outer surface yellow-brown or brown to brown-black, some show dark green, rough; The embolus is more exfoliated and the border between the base of the nail and the embolus are not obvious. The inner surface is light yellowish brown, smooth, with fine longitudinal lines. Hard, broken face yellow, fibrous. Slight smell, slightly bitter taste. Thin skin with spikes is preferred.