✵The article records the herb American Ginseng, including its English name, Latin name, Pinyin name, properties and flavors, and botanical source—namely, the plant species Panax quinquefolius L. It provides a detailed introduction to the botanical features, growth characteristics, and ecological environment of this species, as well as the characteristics of the herb American Ginseng, its pharmacological actions, medicinal efficacy, and administration guidelines.
Radix Panacis Quinquefolii (American Ginseng)
Pinyin Name: Xī Yánɡ Shēn or Huā Qí Shēn.
English Name: American Ginseng.
Latin Name:Radix Panacis Quinquefolii Properties and Flavors: Cool in nature; sweet and slightly bitter in taste
Brief Introduction:Radix Panacis Quinquefolii is the dried root of Panax quinquefolius L., used to replenish Qi, nourish Yin, clear internal heat, and promote fluid production. It is indicated for: (1) Yin deficiency with exuberant fire, manifesting as cough with blood-streaked sputum; and (2) simultaneous impairment of Qi and Yin in febrile diseases, presenting with restlessness and thirst. The herb is commonly known as Radix Panacis Quinquefolii, American Ginseng, or Xī Yánɡ Shēn.
Botanical Source: Classical herbal works define American Ginseng (Radix Panacis Quinquefolii, Xī Yánɡ Shēn) as the dried root of Panax quinquefolius L., a plant of the Araliaceae family (ginseng or ivy family). It belongs to the genus Panax L., family Araliaceae, order Apiales. This widely used species is described below:
Panax quinquefolium L.
Botanical Description:Panax quinquefolius L. is a perennial herb of the Araliaceae family and genus Panax. It is commonly known as American ginseng, Huā Qí Shēn, or Xī Yánɡ Shēn. Synonyms include Aralia quinquefolia, Panax quinquefolium, Panax quinquefolius L., and Radix Panacis Quinquefolii. "Huā Qí" literally refers to "the Stars and Stripes" (the national flag of the USA), while "Xī Yánɡ Shēn" means "Ginseng from Western countries." The plant grows up to 25–30 cm tall. Its taproot is circular (rounded) or fusiform (spindle-shaped), sometimes branched. Stems are cylindrical with vertical striations. Leaves are palmately compound; typically, three to four leaves arise in an apical whorl; petioles are flattened and 5–7 cm long; leaflets usually number five (rarely seven), with the two lower leaflets smaller; petiolules measure 1–2 cm; leaflets are obovate, broadly ovate, or broadly elliptical, 4–9 cm long and 2–5 cm wide; the apex is acuminately caudate; the base is decurrent and cuneate (wedge-shaped); margins are coarsely serrated; sparse fine setulae occur along the veins.
Umbels are solitary and terminal, bearing 20–80 flowerets (floscules) arranged in a globular cluster; peduncles are 10–20 cm long; floral bracts are ovate; the calyx is campanulate (bell-shaped), green, and 5-dentate; the corolla is greenish-white with five oblong petals; 5 stamens, filament base is slightly flattened; one pistil is present, with an inferior ovary that is bilocular, two styles (separated in the upper part), and a succulent, ring-shaped floral disc.
Fruits are drupaceous, oblate, numerous, aggregated into capitate clusters, and turn bright red at maturity. Flowering occurs from May to June; fruiting occurs from June to September.
Ecological Environment: The plant grows in mountainous regions at altitudes of approximately 1,000 meters above sea level. It prefers dappled or diffused light and thrives in sandy forest soils. Geographical Distribution: Native to the forested areas of northern Wisconsin, USA; now also cultivated and naturalized in southern Canada and parts of China.
Growth Characteristics:Panax quinquefolius L. prefers warm, moist environments. In major producing regions of the USA, the mean annual temperature ranges from 3.6 °C to 12.7 °C (38.5 °F to 54.9 °F); the mean January temperature ranges from −11.0 °C to 3.9 °C (12.2 °F to 39.0 °F); the mean July temperature ranges from 20.1 °C to 24.0 °C (68.2 °F to 75.2 °F); and annual precipitation ranges from 1,100 mm to 1,200 mm. The soil is gray-brown forest soil with a taupe (grayish-brown) surface, granular structure, high humus content, pH 5.3–6.5, and good permeability.
Characteristics of the Herb: The taproot (main root) of sun-dried American ginseng is cylindrical or short-cylindrical, fusiform (spindle-shaped), and bears divaricate rootlets in the lower part; occasionally, the taproot lacks rootlets in the lower part and is therefore conical or fusiform. Its length ranges from 1.5 to 9 cm (or 3 to 12 cm), and its diameter from 0.5 to 3 cm (or 0.8 to 2 cm). The surface is pale yellow or khaki (stone-yellow), bearing dense, fine annular ridges (fringes), vertical wrinkles, and a few elongated lenticels. The rhizome and lateral roots are either fully removed or partially retained; when present, the rhizome is cylindrical or flattened-cylindrical, measuring 0.1–1.3 cm in length and 0.1–1.0 cm in diameter, with 1–4 concave, pit-like stem scars; adventitious roots are sometimes present. Rootlets are absent or number 2–6; they bear fibrous roots and verrucous protrusions. The herb is hard and brittle in texture; the fracture surface is yellowish-white, with brown or brownish-yellow concentric rings. The cortex displays scattered salmon-colored (orange-red) or reddish-brown spots, and radial fissures are evident. The herb has a mild fragrance and tastes bitter with a slight sweetness.
Pharmacological Actions: (1) Sedative effect; (2) Moderate stimulatory effect on the vital center; (3) Anti-fatigue effect; (4) Antidiuretic effect; (5) Enhanced tolerance to hypoxia.
Medicinal Efficacy: Tonifies Qi and nourishes Yin; moistens and strengthens Lung-Yin; clears deficient heat; clears heat and generates fluids; generates fluids and alleviates thirst. It is indicated for: Qi and Yin deficiency; Excessive fire due to Qi and Yin deficiency; Asthenic fever and lassitude; Lung-Yin deficiency with chronic cough; Cough and dyspnea with blood-tinged sputum; Blood loss; Internal heat and consumptive thirst (xiao ke); Dry throat and thirst; Dry mouth and dry throat.
Administration of Radix Panacis Quinquefolii (Xī Yánɡ Shēn):
Reference:
Administration Guide for Radix Panacis Quinquefolii (Xī Yánɡ Shēn)
TCM Books:
(1) Internally: 3–6 grams, decocted separately and added to the final decoction; (2) Internally: Water decoction, 0.8–2 qián (≈2.4–6 grams), decocted separately and added to the final decoction; (3) Internally: Water decoction, 3–6 grams; or prepared as pills or powder.
Contraindications, Precautions, and Adverse Reactions: Radix Panacis Quinquefolii should not be combined with Veratrum nigrum (Black False Hellebore). Avoid preparation in iron utensils and excessive heating (e.g., prolonged high-heat frying).
✵The article records the herb American Ginseng, including its English name, Latin name, Pinyin name, properties and flavors, and botanical source—namely, the plant species Panax quinquefolius L. It provides a detailed introduction to the botanical features, growth characteristics, and ecological environment of this species, as well as the characteristics of the herb American Ginseng, its pharmacological actions, medicinal efficacy, and administration guidelines.
Pinyin Name: Xī Yánɡ Shēn or Huā Qí Shēn.
Botanical Description: Panax quinquefolius L. is a perennial herb of the Araliaceae family and genus Panax. It is commonly known as American ginseng, Huā Qí Shēn, or Xī Yánɡ Shēn. Synonyms include Aralia quinquefolia, Panax quinquefolium, Panax quinquefolius L., and Radix Panacis Quinquefolii. "Huā Qí" literally refers to "the Stars and Stripes" (the national flag of the USA), while "Xī Yánɡ Shēn" means "Ginseng from Western countries." The plant grows up to 25–30 cm tall. Its taproot is circular (rounded) or fusiform (spindle-shaped), sometimes branched. Stems are cylindrical with vertical striations. Leaves are palmately compound; typically, three to four leaves arise in an apical whorl; petioles are flattened and 5–7 cm long; leaflets usually number five (rarely seven), with the two lower leaflets smaller; petiolules measure 1–2 cm; leaflets are obovate, broadly ovate, or broadly elliptical, 4–9 cm long and 2–5 cm wide; the apex is acuminately caudate; the base is decurrent and cuneate (wedge-shaped); margins are coarsely serrated; sparse fine setulae occur along the veins.
Umbels are solitary and terminal, bearing 20–80 flowerets (floscules) arranged in a globular cluster; peduncles are 10–20 cm long; floral bracts are ovate; the calyx is campanulate (bell-shaped), green, and 5-dentate; the corolla is greenish-white with five oblong petals; 5 stamens, filament base is slightly flattened; one pistil is present, with an inferior ovary that is bilocular, two styles (separated in the upper part), and a succulent, ring-shaped floral disc.
Ecological Environment: The plant grows in mountainous regions at altitudes of approximately 1,000 meters above sea level. It prefers dappled or diffused light and thrives in sandy forest soils. Geographical Distribution: Native to the forested areas of northern Wisconsin, USA; now also cultivated and naturalized in southern Canada and parts of China.
Characteristics of the Herb: The taproot (main root) of sun-dried American ginseng is cylindrical or short-cylindrical, fusiform (spindle-shaped), and bears divaricate rootlets in the lower part; occasionally, the taproot lacks rootlets in the lower part and is therefore conical or fusiform. Its length ranges from 1.5 to 9 cm (or 3 to 12 cm), and its diameter from 0.5 to 3 cm (or 0.8 to 2 cm). The surface is pale yellow or khaki (stone-yellow), bearing dense, fine annular ridges (fringes), vertical wrinkles, and a few elongated lenticels. The rhizome and lateral roots are either fully removed or partially retained; when present, the rhizome is cylindrical or flattened-cylindrical, measuring 0.1–1.3 cm in length and 0.1–1.0 cm in diameter, with 1–4 concave, pit-like stem scars; adventitious roots are sometimes present. Rootlets are absent or number 2–6; they bear fibrous roots and verrucous protrusions. The herb is hard and brittle in texture; the fracture surface is yellowish-white, with brown or brownish-yellow concentric rings. The cortex displays scattered salmon-colored (orange-red) or reddish-brown spots, and radial fissures are evident. The herb has a mild fragrance and tastes bitter with a slight sweetness.
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