✵The article records the herb Combined Spicebush Root—its English name, Latin name, Pinyin name, properties and flavor, botanical source—one plant species: Lindera aggregata (Sims.) Kosterm., and provides a detailed introduction to the botanical features, growth characteristics, and ecological environment of this species, as well as the morphological characteristics of the herb, its pharmacological actions, medicinal efficacy, and administration guidelines.
Radix Linderae (Combined Spicebush Root)
Pinyin Name: Wū Yào
English Name: Combined Spicebush Root
Latin Name:Radix Linderae Properties and Flavor: Warm, pungent
Brief Introduction:Radix Linderae is the dried tuberous root of Lindera aggregata (Sims.) Kosterm. It is used to regulate Qi, alleviate pain, warm the kidneys, and dispel cold—thereby relieving distension and pain in the lower abdomen, frequent urination, and enuresis. The herb is commonly known as Radix Linderae, Combined Spicebush Root, or Wū Yào.
Botanical Source: Herbal classical works define Radix Linderae (Combined Spicebush Root) as the dried tuberous root of Lindera aggregata (Sims.) Kosterm., a plant belonging to the genus Lindera Thunb., family Lauraceae (laurel family), order Laurales. This commonly used species is described below:
(1) Lindera aggregata (Sims.) Kosterm.
Botanical Description:Lindera aggregata (Sims.) Kosterm. is also known as Lindera strychnifolia (Sieb. et Zucc.) F.-Vill. and is commonly called Wū Yào or Dú Jiǎo Zhāng. It is an evergreen shrub or small tree, growing up to 4–5 meters tall. The root is woody, swollen, and stout, with a slightly beaded appearance. The bark is celadon (grayish-green). Young branchlets are densely covered with rust-colored pubescence, becoming glabrescent with age; stems and branches are tough and not easily broken. Leaves are alternate and coriaceous; petioles are 5–10 mm long and pilose; leaf blades are elliptic or ovoid, 3–7.5 cm long and 1.5–4 cm wide, with an acuminate or shortly caudate apex and a rounded or broadly cuneate base; margins are entire. The upper surface is green and glossy, glabrous except for pilose midvein; the lower surface is covered with ash-gray or pale brown pubescence when young, becoming subglabrous at maturity, with trinerved venation; the midvein extends to the leaf tip.
Flowers are unisexual and dioecious; inflorescences are axillary umbels with very short peduncles; perianth consists of six tepals, yellowish-green; male flowers possess nine stamens arranged in three whorls; anthers are bilocular with introverted, valvate dehiscence. Female inflorescences bear staminodes; the ovary is superior, globose, unilocular, containing one ovule; the stigma is capitate.
Drupes are spheroidal or globose, 0.6–1 cm long and 4–7 mm in diameter; immature fruits are green, turning atropurpureus (dark purple-black) at maturity. Flowering occurs from March to April; fruiting occurs from September to October.
Ecological Environment: The plant grows in shrublands on sunny hillsides or mountain slopes, forest margins, piedmont zones (foot of mountains), and open fields.
Growth Characteristics:Lindera aggregata prefers subtropical climates and exhibits strong adaptability. Cultivation is best conducted in sites with ample sunlight and loose, fertile, acidic soil.
Characteristics of the Herb: The lindera root is fusiform or cylindrical, slightly curved; some specimens exhibit constriction in the middle, forming a beaded shape—commonly termed “Lindera root beads”—measuring 5–15 cm in length and 1–3 cm in diameter. The surface is yellowish-brown or taupe brown (grayish-brown), bearing fine longitudinal wrinkles and sparse, delicate root scars. The texture is firm and hard, difficult to break; the fracture surface is yellowish-white. The herb possesses a distinctive aroma, with a slightly bitter, pungent taste and a cooling sensation.
Lindera root slices are transverse sections, 1–5 mm thick—or thinner. The fracture surface ranges from yellowish-white to pale brown or reddish, displaying radial vascular bundles and visible annual rings; the central portion is darker in color. The texture is crisp.
Pharmacological Actions: (1) dual modulation of gastrointestinal smooth muscle (stimulation and inhibition) and promotion of digestive juice secretion; (2) acceleration of blood circulation; (3) hepatoprotection; (4) anti-inflammatory effects; (5) antibacterial activity, among others.
Medicinal efficacy: Descending Qi and relieving pain, dispelling stagnation, warming the kidneys, and dispersing cold. It is indicated for distension and pain in the chest and abdomen due to rebellious Qi flow; distension and fullness in the chest and hypochondrium; epigastric distension and pain; abdominal distension and pain; dyspnea caused by rebellious Qi; urinary bladder deficiency and cold; dyspepsia and indigestion; nausea and vomiting; headache; hernia; cold hernia; cold hernia with pain; dysmenorrhea (abdominal pain before or during menstruation); postpartum abdominal pain; beriberi; frequent urination; and enuresis.
Administration of Radix Linderae (Wū Yào):
Reference:
Administration Guide for Radix Linderae (Wū Yào)
TCM Books:
(1) Internally: 3–9 grams; (2) Internally: water decoction, 1.5–3 qian (approximately 4.5–9 grams), juice extraction, or formulation into pills or powders; (3) Internally: water decoction, 5–10 grams, or formulation into pills or powders. External use: Apply an appropriate amount of powdered herb topically.
Contraindications, Precautions, and Adverse Reactions: Old roots and straight, non-fusiform roots are unsuitable for medicinal use. Radix Linderae should be used with caution during pregnancy and in cases of physical debility. It is best avoided in cases of early-onset menstruation (advanced menstruation).
✵The article records the herb Combined Spicebush Root—its English name, Latin name, Pinyin name, properties and flavor, botanical source—one plant species: Lindera aggregata (Sims.) Kosterm., and provides a detailed introduction to the botanical features, growth characteristics, and ecological environment of this species, as well as the morphological characteristics of the herb, its pharmacological actions, medicinal efficacy, and administration guidelines.
Pinyin Name: Wū Yào
Botanical Description: Lindera aggregata (Sims.) Kosterm. is also known as Lindera strychnifolia (Sieb. et Zucc.) F.-Vill. and is commonly called Wū Yào or Dú Jiǎo Zhāng. It is an evergreen shrub or small tree, growing up to 4–5 meters tall. The root is woody, swollen, and stout, with a slightly beaded appearance. The bark is celadon (grayish-green). Young branchlets are densely covered with rust-colored pubescence, becoming glabrescent with age; stems and branches are tough and not easily broken. Leaves are alternate and coriaceous; petioles are 5–10 mm long and pilose; leaf blades are elliptic or ovoid, 3–7.5 cm long and 1.5–4 cm wide, with an acuminate or shortly caudate apex and a rounded or broadly cuneate base; margins are entire. The upper surface is green and glossy, glabrous except for pilose midvein; the lower surface is covered with ash-gray or pale brown pubescence when young, becoming subglabrous at maturity, with trinerved venation; the midvein extends to the leaf tip.
Flowers are unisexual and dioecious; inflorescences are axillary umbels with very short peduncles; perianth consists of six tepals, yellowish-green; male flowers possess nine stamens arranged in three whorls; anthers are bilocular with introverted, valvate dehiscence. Female inflorescences bear staminodes; the ovary is superior, globose, unilocular, containing one ovule; the stigma is capitate.
Ecological Environment: The plant grows in shrublands on sunny hillsides or mountain slopes, forest margins, piedmont zones (foot of mountains), and open fields.
Characteristics of the Herb: The lindera root is fusiform or cylindrical, slightly curved; some specimens exhibit constriction in the middle, forming a beaded shape—commonly termed “Lindera root beads”—measuring 5–15 cm in length and 1–3 cm in diameter. The surface is yellowish-brown or taupe brown (grayish-brown), bearing fine longitudinal wrinkles and sparse, delicate root scars. The texture is firm and hard, difficult to break; the fracture surface is yellowish-white. The herb possesses a distinctive aroma, with a slightly bitter, pungent taste and a cooling sensation.
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