✵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 Purging Fire.
Introduction: Herbs Clearing Heat and Purging Fire: an agent or substance that has the effect of clearing heat from the Qi system, with high fever, dire thirst, dry yellow tongue coating and rapid surging pulse, or purging fire from the internal viscera, such as heart fire, liver fire, etc.
✵Till the date Oct 10th,2019, there are totally  kinds of common TCM herbs,  kinds of related plant species,  kind of related minerals, are recorded in this category. These Herbs Clearing Heat and Purging Fire are briefly introduced separately:
Spica Prunellae(Common Selfheal Fruit-Spike).
Brief Introduction: The herb Spica Prunellae is the dried fruit-spike of Prunella vulgaris L.(family Labiatae), used (1).to clear liver fire for the treatment of acute conjunctivitis, headache and dizziness, and (2).to dissipate nodulation for treating acute mastitis, mumps, scrofula and goiter. The herb is commonly known as Spica Prunellae, Common Selfheal Fruit-Spike, Xià Kū Cǎo.
✵The herb Spica Prunellae(Common Selfheal Fruit-Spike) is the dried fruit-spike of Prunella vulgaris L., it is a plant of the Prunella genus, the Lamiaceae or Labiatae(mint or deadnettle family) family of the Lamiales order.
Common herbal classics defined the herb Common Selfheal Fruit-Spike(Xia Ku Cao) as the fruit spike of the Lamiaceae or Labiatae(mint or deadnettle family) family plant species (1). Prunella vulgaris L.or (2). Prunella asiatica Nakai. These 2 commonly used species and other 2 ornamental species(Prunella grandiflora., and Prunella hispida Benth.) are introduced as:
(1).Prunella vulgaris L.: The Prunella vulgaris L., is a plant of the Lamiaceae or Labiatae(mint or deadnettle family) family and Prunella genus, it is commonly known as "Common Selfheal", or "Xia Ku Cao", perennial herb, stem 15~30 cm high. Rhizome creeping, rooted at nodes. Stems ascending, lower evolved, many-branched from the base, obtusely quadrangular, with shallow grooves, purplish red, sparsely coarsely hairy or nearly glabrous. Leaves opposite, with handle; petiole 0.7~2.5 cm, gradual upward from the lower short; leaf ovate-oblong or circular, ranging in size, length 1.5~6 cm, width 0.7~2.5 cm, apex obtuse, base circle shaped, truncated to broadly cuneate, extending to petiole narrowly winged, margin undulate wavy teeth or almost entire margin. Umbrella inflorescence closely arranged into a top grow 2~4 cm pseudo-spikes, flowering short, then gradually elongation; bracts kidney-shaped or horizontal oval, with pointed; calyx bell-shaped, up to 10 mm, two lips, upper lip flat, apex truncated, there are 3 obvious short teeth, teeth wide, lower lip 2 crack, lobes lanceolate, fruiting calyx due to the lower lip 2 teeth oblique stretch resistant closure; Corolla purple, blue Purple or purplish red, ca. 13 mm, slightly longer than calyx, longer than twice as long as calyx long, lobes broadly lobed in lower lip, fimbriate minute lobes on margins; 4 stamens, fertility with anthers, anthers 2 rooms, room pole fork; ovarian glabrous. Nutlets yellowish brown, oblong-ovate, 1.8 mm long, minutely grooved. Its flowering period is from April to June, the fruiting period is from June to August.
Ecosystem: The Prunella vulgaris L., grows in wasteland, gardens, roadsides, and slopes of grass, woodland edges, usually in basic and neutral soils. Geographical distribution: This species is mainly distributed in China provinces. It spread throughout Asia, Europe, and North America, as well as most area of temperate climate.
Physical Characteristics: Perennial herb, growing up 0.15 meter to 0.3 meter. Prunella is a genus of seven species of herbaceous plants in the family Lamiaceae, also known as self-heals or "allheal" for their use in herbal medicine. Most are native to Asia, Europe, and North Africa, but Prunella vulgaris (the Common Self-heal) is holarctic in distribution, occurring in North America as well, and is a common lawn weed.
Clavate, somewhat flattened, 1.5~8 cm long, 0.8~1.5 cm in diameter. Pale brown to brownish-red. The whole spike composed of up to ten or more whorls of persistent calyx and bracts, each whorl with two opposite bracts, fan-shaped, apex acuminate, striations of vein distinct, the outer surface with white hairs. Each bract with three flowers, the corolla often fell off, persistent calyx bilabiate, with four small brown ovoid nutlets, with white convex at the acute end. Texture light, slight odor, taste weak.
Fibrous-rooted perennial from a root crown or short rhizome. Stems solitary or clustered, erect to creeping and ascending, 4-sided, 1~5 cm long, loosely softly long-hairy in lines or nearly throughout, or practically hairless. It is hardy to zone 3 and is not frost tender. It is in flower from July to September, and the seeds ripen from August to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.
Self-heals are low-growing plants, and thrive in moist wasteland and grass, spreading rapidly to cover the ground. They are members of the mint family and have the square stem common to mints.
Field Marks: the distinguishing features of this species are the crowded spikes consisting of many flowers subtended by many overlapping bracts.
Habitat: Low woods, along streams, around ponds and lakes, in roadside ditches, wet prairies, as well as in drier habitats.
Stems: Spreading to erect, 4-sided, hairy, up to 2 feet (0.61 meters) tall. Height 4~12 inches (30.48 cm).
Leaves: Stalked, softly long-hairy beneath, basal and opposite on stem or basal lacking, entire or obscurely toothed, with lanceolate or elliptic to broadly ovate blade, 2~9 cm long and 0.7~4 cm wide, the lower ones usually broader and with a more rounded base than the upper.
Leaves: Opposite, simple, lanceolate to elliptic to narrowly ovate, rounded or pointed at the tip, rounded or tapering to the base, with or without teeth, usually hairy, up to 3.5 inches (8.9 cm) long, up to 1.5 inches (3.8 cm) broad; leaf stalks present.
Flowers: Several crowded into cylindrical spikes; each flower 1/2 to 1 inch (1.27~2.54 cm) long, subtended by a ciliate bract. Tubular, blue-violet or occasionally pink or white, 1~2 cm long, with a hooded upper lip and a 3-lobed lower lip. Several flowers in short, dense spikes, 2~5 cm long, about 1.5~2 cm thick, the short-pointed bracts about 1 cm long, hairy on edges. Calyx 7~10 mm long, green or purple, with 3 shallow lobes on the upper lip and 2 deeper lobes on the lower lip, all lobes bristle-tipped.
Flowering: May-September. Flower size: 0.5 inch (1.27 cm) long, in clusters 1~2 inches (2.54~5.08 cm) high. Flower color: purple.
Sepals: 2-lipped, green or purple, hairy; the upper lip 3-toothed; the lower lip 2-lobed.
Petals: 2-lipped, purple or white, up to 1 inch (2.54 cm) long; the upper lip unlobed; the lower lip 2-lobed.
Stamens: 4, curved under the upper lip of the corolla.
Pistils: Ovary superior, 4-parted; stigmas 2-cleft.
Fruits: 4 nutlets, dark brown, ribbed, shiny, about 1/10 inch (2.54 mm) long.
Notes: This plant is also known as heal-all.
(2).Prunella asiatica Nakai.: The Prunella asiatica Nakai., is a plant of the Lamiaceae or Labiatae(mint or deadnettle family) family and Prunella genus, it is also known as "Prunella vulgaris L. var. albiflora Koidz.", or "Mountain Spinach", or "Long Corolla Prunella", this species is very similar with the Prunella vulgaris L., the difference is that: the plant is relatively thick, corolla significantly larger than the calyx, about 2 times the length of the calyx, up to 18~21 mm.
Ecosystem: The Prunella asiatica Nakai., grows in the sunny grass and wild sunny hillside. Geographical distribution: This species is mainly distributed in China.
(3).Prunella grandiflora.: The Prunella grandiflora., is a plant of the Lamiaceae or Labiatae(mint or deadnettle family) family and Prunella genus, it is also known as "large-flowered selfheal", or "big flower Prunella", perennial herb; roots creeping underground, there are fibrous roots in the festival. Stems ascending, 15~60 cm tall, obtusely quadrangular, with pilose hairs. Leaves ovate-oblong, 3.5~4.5 cm long, 2~2.5 cm wide, apex obtuse, base suborbicular, entire, both surfaces sparsely hirsute, but often hairs below exfoliate, margin ciliate, petiole 2.5~4 cm, dorsoventral flat, bristle; a pair of leaves below inflorescence oblong-lanceolate, sessile. Inflorescence densely composed of 4.5 cm long oblong inflorescence inflorescences below, not directly bearing leaves, each inflorescence bearing bracts; bracts broad, heart-shaped, apex pointed tip gradually upward small, membranous, veins radially, inner network at margin, pilose outside pilose, margin ciliate, inside glabrous; pedicel short, ca. 1 mm, pilose. Calyx articulate 8 mm long, sparsely hirsute outside along veins, glabrous inside, tube length 3 mm, calyx eyelid 2-lipped, upper lip nearly circular, ca. 5 mm long, apex suborbicular, with 3 teeth, wide triangular teeth, spiny prickly, slightly longer lateral teeth, lower lip oblong, 6 mm long, 3 mm wide, 2-lobed, lobes middle of lip, lanceolate, spiked pointed.
Corolla blue, 20~27 mm in length, 9 mm in length, curved, inner scale with angled ramekins near base, crown with two-lipped lips, upper lip oblong, 1.2 cm long and 0.7 cm wide, curving downward, the lower lip is broad, 3 crack, the larger in the lobes, the edge of a corrugated lobe, lateral lobes drooping. 4 stamens, long before, all extending under the upper lip, filaments separated, flattened, glabrous, apically obtuse toothed, anther 2-compartment, ventricular extraditional. Style filiform, extending above stamens, apex 2-lobed equal, lobes subulate. Disk nearly flattened, wavy. Nutlets suborbicular, slightly knobby raised, apparently grooved at the margin and abaxially. It is flowering in September, fruiting after September. Corolla longer than 2.5 cm, purple deep purple pansy. Types white flower, red flower, magenta, rose-red and plumeria varieties.
Ecosystem: The Prunella grandiflora grows in high humid environment, do not choose soil, cold-resistant. Geographical distribution: This species was native to Europe via the Balkans and West Asia to Central Asia. And it is introduced cultivated in Jiangsu province of China.
(4).Prunella hispida Benth.: The Prunella hispida Benth., is a plant of the Lamiaceae or Labiatae(mint or deadnettle family) family and Prunella genus, it is also known as "Prunella stolonifera H. Lév. et Giraudias, Prunella vulgaris L. var. hispida (Benth.) Benth., Brunella vulgaris L. var. hispida Benth.", or "Hard Hairy Prunella", "Rigid Hair Prunella", or "Ying Mao Xia Ku Cao", perennial, creeping root rhizome with abscission. Stems erect, base often volvicular, 15~30 cm tall, obtuse-four-sided, striate, densely blade abaxially pilose. Leaves ovate to ovate-lanceolate, 1.5~3 cm long, 1~1.3 cm wide, apex acute, base rounded, margin shallowly cordate to crenate-serrate, both surfaces densely tuberous, Sometimes less shedding, lateral veins 2~3 pairs, not obvious, petiole 0.5~1.5 cm, nearly flat, not obvious at the base near the base of the narrow wings, bristles; the most directly on the stems and leaves in the inflorescence or A short distance, nearly sessile. Umbrella inflorescence usually 6 flowers, mostly dense top 2~3 cm wide and 2 cm spike, each inflorescence bearing its bracts under, bracts broad, nearly heart-shaped, 0.8~1 cm wide, Apex acuminate with 2 mm abaxially, densely glabrous outside, glabrous inside, margin distinctly bristine, membranous, veins radial, emanating from base, apex netted, marginally prominent Pedicel extremely short, less than 1 mm long, with bristles. Calyx purple, tubular-bell-shaped, about 1 cm in length, dorsoventral flat, 10 veins, significant, during which the reticular veins, veins conspicuous with section bristles, ciliate margin ciliate, calyx eaves two lip, Upper lip flat, wide, nearly circular, 6 mm long, nearly 5 mm wide, apex subtruncate, with 3 spur teeth, teeth wide, side teeth small, lower lip is narrow, 3 mm wide, 2 deep cleft, lobes up to the middle of the lip, lanceolate, prickly pointed. Corolla purplish to blue-purple, ca. 15~18 mm long, crown 10 mm long, nearly 1.5 mm wide at base, gradually swell anteriorly, slightly constricted throat, 4 mm wide, glabrous outside, near the base, there is a slight leaning scale hair ring, crown eyelid lip, upper lip oblong, ca. 5 mm, width 4 mm, keel, concave, apex emarginate, outside the ridge has a clear hard hairband, glabrous inside, lower lip wide, 5 mm long, 6 mm wide, 3-lobed, middle lobe larger, subrounded, margin with spatulate lobes, lateral lobes oblong, small, drooping. 4 stamens, long in the front, are extended in the crown, filaments separated, flat, glabrous, before the filaments at the top was significantly longer than the anther-shaped lobes, the latter is not significant, the anther 2 rooms, room very fork. Style filiform, slightly extending above stamens, apex 2-lobed. Disk nearly flat-topped. Ovary sepals, glabrous. Nutlets ovate, 1.5 mm long, 1 mm wide, dorsally slightly flattened, apically rounded, brown, glabrous. Its flowering and fruiting period is from June to January of the following year.
Ecosystem: The Prunella hispida Benth grows in the roadside, forest edge and hillside grassland, elevation of 1,500-3,800 meters. Geographical distribution: This species grows in China provinces Yunnan and southwestern Sichuan; It also grows in Sikkim.