✵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:Pungent-cool Exterior-releasing Herbs.
Introduction: Pungent-cool exterior-releasing herbs: an agent or substance herbs pungent in flavor and cool in property, which is usually used for treating a wind-heat exterior syndrome.
✵Till the date Oct 10th,2019, there are totally  kinds of common TCM herbs,  kinds of related plant species,  kind of insect species, are recorded in this category. These pungent-cool exterior-releasing herbs are briefly introduced separately:
Cacumen Tamaricis(Chinese Tamarisk Twig).
Brief Introduction: The herb Cacumen Tamaricis is the dried young green twig of Tamarix chinensis Lour.(family Tamaricaceae), used for measles to promote eruption, and also for rheumatism to relieve arthralgia. The herb is commonly known as Cacumen Tamaricis, Chinese Tamarisk Twig, Xī Hé Liǔ.
✵The herb Cacumen Tamaricis(Chinese Tamarisk Twig) is the dried young green twig and leaves of Tamarix chinensis Lour., it is a plant of the Tamarix L. genus, the Tamaricaceae family of the Parietales order. It is also known as Chinese Tamarisk Twig.
Common official herbal classics and other famous herbal classics defined the herb Cacumen Tamaricis(Chinese Tamarisk Twig) as the dried young green twig and leaves of:(1). Tamarix chinensis Lour. This commonly used species is introduced as:
(1).Tamarix chinensis Lour.: It is also known as Tamarisk willow, Xī Hé Liǔ(literally it means West River Willow). Deciduous shrubs or small trees. Branches are dense, green or reddish, slender, often pendulous. Leaves are alternate, minute, scaly, ovate-triangular, apex acuminate, base sheathed clasped, sessile. Racemes are evacuated panicles; Flowers are small, white to pink, bracts triangular; 5 sepals, 5 petals, filaments are longer than corolla, disk 10 or 5 lobed; Ovary superior, 1-locule, 3 styles. Capsule is small. Seed apex tufted. Its flowering period is from April to September, fruiting period is from August to October.
Habitat subdivision: the tree grows in hilly, humid, sandy and alkaline lands and riverbank alluvial lands. More cultivation. The herb is mainly produced in Hebei and Henan province, and also produced in most parts of China.
Trait Identification: Stems and branches of this product are thin cylindrical, with a diameter of 0.5~1.5 mm. Its surface is grayish-green, with many alternate scaly lobules. Brittle and easily broken. Branch surface is reddish-brown, leaf blade often falls off and remain protuberant leaf base, the cross-section is yellow-white, the center has marrow part. Slight smell, mild taste.