Introduction of Xiang Jia Pi:Chinese Silkvine Bark or Cortex Periplocae.
✵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 Periplocae(Chinese Silkvine Bark).
Pin Yin Name: Xiānɡ Jiā Pí.
English Name: Chinese Silkvine Bark,Chinese Silkvine Root-bark.
Latin Name: Cortex Periplocae.
Property and flavor: warm, pungent, bitter, toxic.
Brief introduction: The herb Cortex Periplocae is the dried root-bark of Periploca sepium Bge.(family Asclepiadaceae), used to dispel wind-damp in cases of rheumatic arthritis, and induce diuresis for edema. The herb is commonly known as Cortex Periplocae, Chinese Silkvine Bark, Xiānɡ Jiā Pí.
Botanical source: Official herbal classics and other famous herbal classics defined the herb Cortex Periplocae(Chinese Silkvine Bark) as the dried root-bark of (1). Periploca sepium Bge. It is a plant of the Periploca genus, the Asclepiadaceae family, Contortae order. This commonly used species is introduced as:
(1).Periploca sepium Bge.: Botanical description: It is commonly known as Gāng liǔ. Deciduous shrubs, up to 1.5 meters long. Taproots terete, rind grayish brown, endothelium pale yellow. With milk, glabrous except for flowers; Stem bark grayish brown; Branchlets usually opposite, pinstriped, lenticellate. Leaves ovate-oblong, 5~9 cm long, 1.5~2.5 cm wide, apex acuminate, base cuneate, dark green, back pale green; Midrib flat on the leaf surface, slightly convex on back, lateral veins fine, flat on both sides, 20~25 lines on each side; Petiole ca. 3 mm.
Cymes axillary, with several flowers; Peduncle and pedicels effeminate; Calyx lobes ovoid, 3 mm long, 2 mm wide, apex obtuse, inner surface base of calyx with 10 small glands; Corolla purplish red, radial, open 1.5 cm in diameter, corolla tube short, ca. 3 mm, lobes oblong-lanceolate, 8 mm long, 4 mm wide, middle thickened fusiform, reflexed, inside surface villous, outside glabrous; Corona annular, 10-lobed, 5-lobed filiform pubescent, apex recurved; Stamens inserted on inner surface of corona and united with it, anthers adhering to each other and enclosing stigma, abaxially villous; Carpels free, glabrous, ovules multiple per carpel, stigma discoid convex; The pollen container is spatulate, tetrahedral pollen is hidden in the pollen carrier, and the sticky disc sticks to the stigma.
2 Follicles, terete, 7~12 cm long, ca. 5 mm in diameter, glabrous, with longitudinal streaks; Seeds oblong, ca. 7 mm long, ca. 1 mm wide, dark brown, apex with white silk seed hairs; The seed coat is 3 cm long. Its flowering period is from May to June, fruiting from July to September.
Ecological environment: The plant grows on arid slopes, gullies, fixed sandy land, thickets, rivers, riverside sandy land, valley terraces, river flats, wasteland, loess hills, forest margins, forests, roadside, plains, hilly forest margins, sandy land, valleys, slopes, field edges, fixed or semi-fixed dunes. Distribution: the plant distributes in the north, northwest, southwest, the lower reaches area of the Yangtze River, China. It also distributes in the ussuri, far east.
Growth characteristics: The Periploca sepium is not strict in climate choice, should be planted on the hillside or the river facing the sun. Deep, fertile, well-drained yellow soil with sand is better.
Characters of herbs: Dry skin long cylindrical, single or double roll, a few grooves or fragment, up to 16 cm long, 2~5 mm thick. The outer surface is grayish brown or earthy brown and reddish, coarse, with transverse lenticels, the cork is often scaly exfoliated, sometimes exposing earthy brown skin; Interior surface grayish-yellow or earthy brown. The quality is firm and crisp, and the broken surface is slightly flat. Have full-bodied distinctive aroma, long smell makes a person giddy; Bitter taste. The herb thick, thick skin, a roll shape, no wood heart, strong aroma, bitter taste is better.
Pharmacological actions: The herb has ①.Cardiotonic effect, ②.Central excitatory effect: Mice experiment showed that the central excitatory effect of the tincture and the solution of the tincture may be caused by its volatile components. ③.Other effects: the component can increase pulmonary circulation under certain conditions. In test, the cardiotonic and diuretic effect is proved. Besides, the bark has an insecticidal effect.
Medicinal efficacy: Dispel wind and dampness, strengthen muscles and bones, alleviate water retention and reduce swelling, cardiotonic. It is indicated for the treatment of wind-cold-dampness arthralgia, rheumatism and numbness pain, waist and knee pain, palpitations and shortness of breath, lower extremity swelling, edema, dysuria(difficulty in micturition), heart failure, etc.
Administration of Cortex Periplocae(Xiānɡ Jiā Pí):
Administration Guide of Cortex Periplocae(Xiānɡ Jiā Pí)
Internally:3~6 grams(CP),Internally:water decoction, 1.5~3 qian(about 4.5~9 grams),infusing in wine or prepare to pill,powder(DCTM),Internally:water decoction, 4.5~9 grams,or infusing in wine,or prepare to pill,powder.Externally:proper amount,wash with water decoction(CHMM).
1.Introduction of Xiang Jia Pi:Chinese Silkvine Bark or Cortex Periplocae.
2.TCM Books:DCTM(Dictionary of the Chinese Traditional Medicine),CHMM(Chinese Herbal Materia Medica).