✵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:expectorants,herbs for resolving cold-phlegm.
Introduction: Expectorants,herbs for resolving cold-phlegm: an agent or substance herbs warm in property, used in treating disorders of cold-phlegm or phlegm-dampness.
✵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 expectorants, herbs for resolving cold-phlegm are briefly introduced separately:
Rhizoma Arisaematis(Jack-in-the-Pulpit Tuber).
Brief Introduction: The herb Rhizoma Arisaematis is the dried tuber of Arisaema erubescens(Wall.) Schott., Arisaema heterophyllum Bl. or Arisaema amurense Maxim.(family Araceae), used as (1).an expectorant for a cough with profuse phlegm, and (2).an anticonvulsive for epilepsy or tetanus.
✵ The herb Rhizoma Arisaematis(Jack-in-the-Pulpit Tuber) is the dried tuber of Pinellia ternata (Thunb.) Breit., it is a plant of Pinellia Ten. Genus, the Araceae Juss family of the Alismatales order. It is also known as Pinellia Tuber, Tuber of Pinellia or Bàn Xià.
Common official herbal classics and other famous herbal classics defined the herb Rhizoma Arisaematis(Jack-in-the-Pulpit Tuber) as the dried tuber of:(1). Arisaema erubescens(Wall.) Schott., (2). Arisaema heterophyllum Blume., (3). Arisaema amurense Maxim., (4). Pinellia pedatisecta Schott., These 4 commonly used species are introduced as:
(1).Arisaema erubescens(Wall.)Schott.: It is commonly known as umbrella arisaema. Perennial herbs. Tubers suborbicular, up to 6 cm in diameter. Scaly leaves purplish-red or greenish-white, interspersed with brown patches. Leaves a single; Stalk 70 cm long, with leaf sheath below middle; Leaf blade radially divided, 7~20 lobes, pyramidal or oblong, 7~24 cm long, 1~4 cm wide, long acuminate or elongated to linear caudate. Inflorescence stem from middle part of leaf, shorter than petiole; Buddha flame bud color diversity, green ask have white stripe or lilac to deep purple interspersed with green, white stripe; Larynx extended, margin rolled outwards, eaves wide, triangular-ovate to oblong ovate, light ray extended to 15 cm long line tail; Inflorescence of flesh; The female inflorescence is lower, the axis of the neutral inflorescence is in the middle, immediately following the axis of the male inflorescence, and above it are rod appendages about 5 cm long. Young bare when ripe, berry red. 1~2 seeds, globose, light brown. Its flowering period is from April to June, fruiting from August to September.
Ecological environment: the plant grows in wasteland, grassy slopes, thickets and forests. It is distributed in most provinces of China, except the northeast area and Xinjiang province.
Trait identification: the tuber is oblate and spherical, with a diameter of 2~5.5 cm. The surface is light yellow to light brown, the top is relatively flat, and the central stem mark is slightly concave. There are ring lines formed by leaf marks around, big pitted root marks around, but not obvious, and no small lateral buds around. Hard, cross-section white powder. Same with the smell.
(2).Arisaema heterophyllum Blume.: It is commonly known as Tian Nan Xing. Perennial herb. Tubers suborbicular, 2~5 cm in diameter. Leaves often simple; Petiole scabbard, lower with 2~3 membranous scaly leaves; Leaf blade birdlike, 11~19 lobes, linear-oblong or inverted, middle lobe shorter than on both sides. The stem of the inflorescence divides from the middle of the petiole; Buddha flame bud tube length 3-6 cm, green and white, throat truncate, outside the back winding, eaves oval-shaped lanceolate, sometimes curved helmet shape, pale green all pale yellow; The sleeve of the inflorescence is completely separated from the bud of flame. Inflorescences bisexual or male unisexual; Lower female inflorescence of bisexual inflorescence ca. 2 cm long, densely flowered, upper male inflorescence ca. 3 cm long, sparsely flowered. Unisexual male inflorescence 3~5 cm long, 3~5 mm thick. The base of the appendage is 0.5~1 cm in diameter, up to 20 cm long, extending from the throat of Buddha flame bud in a zigzag shape. Fruit inflorescence is nearly conical, berry red when ripe, buddha bud withered and fruit exfoliated. The seeds are yellow and red. Its flowering period is from April to May, fruiting from June to September.
Ecological environment: the plant grows in wasteland, grassy slopes, thickets and forests. It is distributed in most provinces of China except the northeast and Xinjiang.
Trait identification: tubers are slightly flat and round, with a diameter of 1.5~4 cm. The surface is white or light brown, relatively smooth, with concave stem marks at the top, 1 circle 1-3 rows of prominent root marks around, occasionally with a few small protruding side buds, sometimes smooth, smell as above.
(3).Arisaema amurense Maxim.: This leaf; Petiole 17~30 cm long, lower 1/3 sheathed, purple; Leaf blade bird foot divided, 5 lobes, obovate-needle-shaped or elliptic, apex shortly acuminate or acute, base cuneate, middle lobes with stipitate ca. 2 cm long, 7~12 cm long, 4~7 cm wide, lobes ca. 1 cm long. Common handle, entire margin. Inflorescence stalk shorter than petiole, fovea green or purple with white streaks; Inflorescence single; Male inflorescence about 2 cm, flowering sparsely; Female inflorescence ca. 1 cm; Each accessory has a short handle and a rod shape. Berry red; Four seeds, red. The inflorescence axis of flesh spike often increases at the fruiting stage, fruiting lag amaranth.
Ecological environment: the plant grows in forests and beside ditches at an altitude of 50~1,200 meters. It is distributed in the north China and Jiangsu, Henan, Ningxia, Shaanxi provinces, and other areas.
Trait identification: tuber is oblate, with a diameter of 1.5~4 cm. The central stem mark was large and slightly flat, with a shallow dish shape, few ring lines, and fine pitch-like root mark, with an irregular arrangement and small protruding lateral buds around. Same smell.
(4).Pinellia pedatisecta Schott.: It is commonly known as tiger palm. Perennial herb. Tubers 1 to 2 years old is nearly round and spherical. Tubers over 3 years old are flat persimmon with 2 to 5 papillary tubers on the side, up to 6 cm in diameter. Leaves from the eye out, 2~6 clusters; Leaf blade birdlike, 5~13 lobes, ovate-lanceolate or ellipsoid-lanceolate, medium lobes larger than lobes, 15~18 cm long, ca. 3 cm wide. 2~4 inflorescences, also from the eye, 15~30 cm long; The spout is spatulate and lanceolate, gradually tapering, and the color is like leaves. The female inflorescence of the inflorescence sticks to the spout, 1~3 cm long, with flowers on the outside. Male inflorescence axis partially free, 5~7 mm long. Florets dense, yellow; The appendage is shaped like a rat's tail and 15 cm long. Berry oval, green and white when ripe, easy to fall off the cloth, the year germinated new plant. Its flowering period is from May to July, fruiting from June to October.
Ecological environment: the plant grows in valleys, river banks, grasslands, grass and bamboo forests. It is distributed in north and east, central south, southwest area of China.
Trait identification: tubers are flattened and irregularly round, with main tubers and most tubers. Small tubers attached, resembling the paw of a tiger, 1.5~5 cm in diameter. The surface is light yellow or light brown, with a stem mark in the center of each tuber and a dotted fibrous root mark around it. Quality solid and heavy, cross-section uneven, white, pink. Slight smell, spicy, numbness of the tongue.