✵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:Yin Tonics,Herbs for Replenishing Yin.
Introduction: Yin Tonics,Herbs for Replenishing Yin: also known as Yin-tonifying herb, or Yin-nourishing herb, an agent or substance that tonifies the Yin of the heart, lung, stomach, liver, or kidney.
✵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 Yin Tonics,Herbs for Replenishing Yin are briefly introduced separately:
Herba Pyrolae(Pyrola Herb).
Brief Introduction: The Herb Herba Pyrolae is the dried entire plant of Pyrola calliantha H.Andres, or Pyrola decorata H. Andres(family Pyrolacea), used to replenish kidney yin, strengthen the sinews and bones, dispel wind-damp and arrest bleeding for the treatment of lumbago, rheumatism, menorrhagia, bloody sputum and epistaxis. The herb is commonly known as Herba Pyrolae, Pyrola Herb, Lù Xián Cǎo.
✵Common official herbal classics defined the herb Herba Pyrolae(Pyrola Herb) as the dried entire plant of the species (1).Pyrola calliantha H. Andres., (2).Pyrola decorata H. Andres. Other famous herbal classics defined the herb Herba Pyrolae(Pyrola Herb) as the dried entire plant of the species (1).Pyrola calliantha H. Andres., (2).Pyrola decorata H. Andres., (3).Pyrola japonica Klenze exAlef., (4).Pyrola incarnata Fisch.ex Dc. They are plants of the Pyrola Linn. genus, the Pyrolaceae family of the Ericales order. These 2 officially defined species and other 2 commonly used species are introduced as:
(1).Pyrola calliantha H. Andres.: It is commonly known as Lù Tí Cǎo(literally it means Deer hoof grass). Small evergreen herbaceous shrub, 10~30 cm tall; Rhizome slender, transverse, obliquely ascending, branched. 4~7 leaves, basal, leathery; Elliptic or ovoid, sparsely suborbicular, 2.5~5.2 cm long, 1.7~3.5 cm wide, apex obtuse or obtuse, base broadly cuneate or suborbicular, margin subentire or sparsely toothed, green above, often glaucous below, sometimes purplish; Petiole 2~5.5 cm long, sometimes purplish. Scape 1~4 scaly leaves, ovate-lanceolate or lanceolate, 7.5~8 mm long, 4~4.5 mm wide, apex acuminate or shortly acuminate, base slightly appressed.
Racemes 12~16 cm long, with 9~13 flowers, dense, flowers tilted, slightly pendulous, corolla widely open, larger, 1.5~2 cm in diameter, white, sometimes slightly reddish; Pedicels 5~10 mm long, long lingual bracts in axils, 6~7.5 mm long, 1.6~2 mm wide, apex acute; Sepals lingual, 3~7.5 mm long, 1.5~3 mm wide, apex acute or obtuse, margin subentire; Petals obovate-elliptic or obovate, 6~10 mm long, 5~8 mm wide; 10 stamens, filaments glabrous, anthers long cylindrical, 2.1~4 mm long, 1~1.4 mm wide, angular, yellow; Style 6~10 mm long, often reddish, oblique, suberect or slightly upward curved above, corolla extended or slightly extended, apex thickened, annular protuberant, stigma 5-lobed. Capsule oblate, 5~5.5 mm tall, 7.5~9 mm in diameter. Its flowering period is from June to August, fruiting period is from August to September.
Ecological environment: It grows in coniferous forests, mixed coniferous and broad-leaved forests or under broad-leaved forests in mountain areas with an altitude of 700~4,100 meters. It is distributed in Anhui, Gansu, Guizhou, Hebei, Hubei, Jiangxi, Jiangsu, Qinghai, Shanxi, Shaanxi, Sichuan, Xizang, Yunnan.
Trait identification:Whole herb length 10~30cm. Rhizome slender, branched. Basal leaves 4~7, leaves elliptic or ovoid, sparsely suborbicular, up to 5. 2 cm, width up to 3.5 cm, abaxially often glaucous, sometimes purplish.
(2).Pyrola decorata H. Andres.: It is commonly known as Pǔ Tōng Lù Tí Cǎo(literally it means common Pyrola), or Luǎn Yè Lù Tí Cǎo(literally it means Egg-leaf Pyrola), Yǎ Měi Lù Tí Cǎo(literally it means Elegant Beautiful Pyrola), Shān Měi Rén Lù Tí Cǎo(literally it means Mountain Beauty Pyrola). Small subshrubs evergreen herbaceous, 15~35 cm tall; Rhizome slender, transverse, obliquely ascending, branched. 3~6 leaves, grow near base, heavy leather quality, oblong or ovoid oblong or spoon, sometimes for oval oblong, 3~7 cm long, 2.5~4 cm wide, apex blunt tip or obtuse, base cuneate or broadly cuneate, next to petiole, dark green above, along the veins of white, greenish-white or slightly under the complexion is pale, often with purple, with sparse teeth on edge; Petiole 1.5~4 cm long, shorter or subequal than leaf blade.
Scape slender, 1.5~2 mm in diameter, often purplish, 1~3 brown scaly leaves, narrowly lanceolate, 8~14 mm long, apex acuminate, base slightly appressed. Racemes 2.5~4 cm long, with 4~10 flowers, oblique, semipendent, corolla bowl-shaped, 1~1.5 cm in diameter, pale green or yellowish-green or nearly white; Pedicels 5~9 mm long, membranous bracts in axils, lanceolate, 5~9 mm long, 1.3~1.5 mm wide, nearly as long as pedicels; Sepals ovate-oblong, 3~6 mm long, 2~2.5 mm wide, apex acute, margin pale; Petals obovate-elliptic, 6~10 mm long, 5.5~7 mm wide, apex rounded; 10 stamens, filaments glabrous, 4~5 mm long, anthers 3~4 mm long, 1~1.5 mm wide, with small horns, yellow; Style 5~10 mm, oblique, upper part curved, apical ring protuberant thin, corolla extended, stigma 5-lobed.
Capsule oblate, 7~10 mm in diameter. Its flowering period is from June to July, fruiting period is from July to August.
Ecological environment:It grows under broad-leaved forests or thickets at an altitude of 600~3,000 meters. It is distributed in Anhui, Gansu, Guangxi, Guangdong, Guizhou, Hubei, Jiangxi, Shaanxi, Sichuan, Xizang, Yunnan.
Trait identification:The whole grass 14~30 cm long, glabrous, brownish-green or nearly reddish brown. Rhizome slender, with fine roots and scaly leaves; Slightly longitudinally ribbed, with fine longitudinal wrinkles between rims. Leaves alternate; Basal leaves 3~6, petiole 2~4 cm long, angled; Leaf blade leathery, thicker, long ovate, elliptic or oblong, 3.5~7 cm, 2.3~4 cm wide, apex obtuse, petiolate, basal broadly cuneate, descending to petiole, margin sparsely dentate; The surface is dull green, the back is purplish red. Scape 15~30 cm high; Racemes with 5~8 flowers; Bracts linear-lanceolate, flowers broadly bell-shaped; Calyx 5 lobed. Capsule dark brown, oblate globose.
(3).Pyrola japonica Klenze exAlef.: It is commonly known as Xiǎo Rì Běn Lù Tí Cǎo.Small subshrubs evergreen herbaceous, 15~30 cm tall; Rhizome slender, transverse, obliquely ascending, branched. 3~8 leaves , basal, subleathery, elliptic or ovalate-elliptic, sparsely broad-elliptic, 2.5~6 cm long, 2.5~4.5 cm wide, apex obtuse, base subrounded or rounded cuneate, margin subentire or inconspicuously sparsely serrate, dark green above, veins pale, green below; Petiole narrowly winged, 3-6 cm long.
Scape with 1~2 membranous scaly leaves or absent, lanceolate, 7~15 mm long, 2~4 mm wide, apex shortly pointed, base slightly girdled with flowers.
Racemes 6~10 cm long, with 3~12 flowers, tilted, semi-pendent, corolla bowl-shaped, 10~12 mm in diameter, white; Pedicels 4~6 mm long, bracts in axils, linear-lanceolate, 5~8 mm long, slightly longer than pedicels or subequal, apex acuminate; Sepals lanceolate triangular, 3.5~4 mm long, base up to 1.6~2 mm wide, apex acuminate or shortly acuminate; Petals obovate-elliptic or obovate-elliptic, 5~6.5 mm long, 3.5~4.5 mm wide, apex rounded obtuse; 10 stamens, filaments glabrous, anthers 2.2~2.5 mm long, 1~1.1 mm wide, upper end with small Angle, end with short tail-tip; Style 11~13 mm long, oblique, upper part curved upward, apex thickened, no ring protruding, corolla extended.
Capsule oblate, 6~8 mm in diameter. Its flowering period is from June to July, fruiting period is from August to September.
Ecological environment:It grows in mixed broad-leaved forests or broad-leaved forests with an altitude of 800-2000 m. Distributed in north of China, other areas of northeast Asia, far east.
Trait identification:Racemes with 3~12 flowers; Sepals broadly lanceolate; Leaves broadly ovoid to broadly ovate; Scape apocryphal or having 1 slice.
(4).Pyrola incarnata Fisch.ex Dc.: It is commonly known as Hóng Huā Lù Tí Cǎo(literally it means Red-Flower Pyrola). Small subshrubs evergreen herbaceous, 15~30 cm tall; Rhizome slender, transverse, obliquely ascending, branched. 3~7 leaves, basal, thinly leathery, slightly lustrous, suborbicular or ovoid or ovate-elliptic, 3.5~6 cm long, 2.5~5.5 cm wide, apex obtuse, base suborbicular or rounded cuneate, margin subentire or with inconspicuous shallow teeth, both surfaces sometimes purplish, veins slightly raised; Petiole 5.5~7 cm long, 1 times as long as leaf blade, sparse to nearly equal length, sometimes purplish. Scape often purplish, with 2-3 brown scaly leaves, larger, narrowly oblong or oblong-ovate, 12~15 mm long, 3~5 mm wide, apex acute or shortly acute.
Racemes 5~16 cm long, with 7~15 flowers, flowers tilted, slightly pendulous, corolla widely open, bowl-shaped, 13~20 mm in diameter, purplish-red; Pedicels 6~7.5 mm long, fruiting to 7~12 mm, membranous bracts in axils, lanceolate, ca. 7~8 mm long, longer than pedicels, sparse subequal, apex acuminate. Sepals triangular to lanceolate, 3.5~5 mm long, apex acuminate, base 1.5~2 mm wide; Petals obliquely ovoid; 10 stamens, filaments glabrous, anthers 2.5~2 mm long, 1~1.2 mm wide, angular, purple when mature; Style 6~10 mm long, oblique, upper part curved upward, apex with a ring protruding, corolla; Stigma 5 lobed.
Capsule oblate, 4.5~5 mm tall, 7~8 mm in diameter, purplish red. Its flowering period is from June to July, fruiting period is from August to September.
Ecological environment: It grows in coniferous forest, mixed coniferous broad-leaved forest or broad-leaved forest with an altitude of 1,000~2,500 meters. It distributed in Hebei, Henan, Shanxi, Xinjiang and northeast of China. It is also distributed in other areas of North-East Asia and the Far East.
Trait identification:Flowers deep purplish-red; Sepals triangular-lanceolate, acuminate.