✵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:Herbs Clearing Heat and Drying Dampness.
Introduction: Herbs Clearing Heat and Drying Dampness: an agent or substance bitter in taste and cold in property that is effective for eliminating heat and dampness, usually used in the treatment of diseases caused by damp-heat, such as acute jaundice, acute dysentery, urinary infection, eczema, boils and abscesses.
✵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 Herbs Clearing Heat and Drying Dampness are briefly introduced separately:
Cortex Ailanthi(Tree-of-heaven Bark).
Brief Introduction: The Herb Cortex Ailanthi is the dried root bark or stem bark of Ailanthus altissima(Mill.) Swingle(family Simarubaceae), used for treating diarrhea, chronic dysentery, abnormal uterine bleeding, and leukorrhea. The herb is commonly known as Cortex Ailanthi, Tree-of-heaven Bark, Chūn Pí.
✵Common herbal classics and official herbal classics defined the herb Cortex Ailanthi(Tree-of-heaven Bark) as dried root bark or stem bark of (1). Ailanthus altissima (Mill)Swingle., it is a plant of the Ailanthus Desf. Genus, Simaroubaceae DC. family, Sapindales order plant. This commonly used species is introduced as:
(1).Ailanthus altissima (Mill)Swingle.: It is also known as Chūn Shù. Deciduous trees, up to 20 meters tall, bark smooth and straight lines; Young shoots pith, yellow or tawny fluff when young, glabrescent. Leaves odd-pinnate compound, 40~60 cm long, petiole 7~13 cm long, 13~27 leaflets; Leaflets opposite or subopposite, papery, ovate-lanceolate, 7~13 cm long, 2.5~4 cm wide, apex long acuminate, base oblique, truncate or slightly rounded, 1 or 2 coarsely serrate on each side, glandular on the back, dark green, grayish-green on the back, odorous after soft crushing. Panicles 10~30 cm long; Flowers pale green, pedicels 1~2.5 mm long; 5 sepals, imbricate, lobes 0.5-1 mm long; 5 petals, 2~2.5 mm long, base flanks hirsute; 10 stamens, filaments base densely hirsute, filaments in male flowers longer than petals, filaments in female flowers shorter than petals; Anthers oblong, ca. 1 mm long; 5 carpels, style adherent, stigma 5 lobed. Samara oblong, 3~4.5 cm long, 1~1.2 cm wide; Seeds in the middle of the wings, oblate. Its flowering period is from April to May, fruiting from August to October.
Ecological environment: The Ailanthus altissima (Mill)Swingle is distributed in north, east and southwest China, southeast to Taiwan province. North to the southern Liaoning, the Yellow River basin is the distribution center. It is widely used all over the world.
Trait identification: The root bark of this product is irregular sheet or roll sheet, length and width are different, the thickness is 0.3~1 cm. The outer surface is grayish-yellow or yellowish-brown, rough, with most protruding longitudinal lenticels and irregular longitudinal and transverse cracks, yellow and white in case of rough skin removal. Inner surface light yellow, relatively flat, dense fusiform small hole or dot. Hard and brittle, the cross-section of the outer granular, fibrous inner layer. Slight breath, bitter taste. The dry skin is irregular lamellar, with different sizes and thickness of 0.5~2 cm. The outer surface is grayish-black, extremely rough, with deep cracks.