✵This article documents the herb Asparagus Root, including its English name, Latin name, Pinyin name, properties and flavor, botanical source—namely, a single plant species: (1) Asparagus cochinchinensis (Lour.) Merr.—and provides a detailed description of the botanical features, growth characteristics, and ecological environment of this species, as well as the characteristics of the herb, its pharmacological actions, medicinal efficacy, and administration guidelines.
Radix Asparagi (Asparagus Root)
Pinyin Name: Tiān Mén Dōnɡ
English Name: Asparagus Root
Latin Name:Radix Asparagi Property and Flavor: Cold; sweet and bitter.
Brief Introduction:Radix Asparagi is the steamed, peeled, and dried tuberous root of Asparagus cochinchinensis (Lour.) Merr. It is used to nourish Yin, generate body fluids, alleviate thirst, soothe a dry throat, relieve cough with sticky phlegm, treat hemoptysis (bloody sputum), and alleviate constipation due to intestinal dryness. Common names include Asparagus Root, Cochinchinese Asparagus Root, and Tiān Mén Dōnɡ.
Botanical Source: Common and authoratitive herbal works define Tiān Mén Dōnɡ as the tuberous root of Asparagus cochinchinensis (Lour.) Merr., a species belonging to the genus Asparagus L. and the family Asparagaceae (formerly placed in Liliaceae). This widely used species is distinguished from Asparagus officinalis as follows:
(1) Asparagus cochinchinensis (Lour.) Merr.
Botanical Description:Asparagus cochinchinensis (Lour.) Merr. is a species belonging to the genus Asparagus L. and the family Asparagaceae (formerly placed in Liliaceae). It is also known as Melanthium cochinchinensis Lour., Asparagus lucidus Lindl.(A. lucidus Lindl.), Asparagus gaudichaudianus Kunth. (A. gaudichaudianus Kunth.), Tiān Mén Dōnɡ. It is a perennial, scandent (climbing) herb of the Asparagaceae family. The whole plant is glabrous. Tubers are succulent, clustered, oblong-ovoid or fusiform (spindle-shaped), 4–10 cm long, and yellowish-gray (sallow). Stems are slender, up to 2 m long, with ribs or narrow winged ridges; typically, three phylloclades arise in a fascicle—flat, 1–3 cm long, 1–2 mm wide, with an acute apex.
Leaves are reduced to scale-like structures, acuminate at the apex; the base bears woody, anatropous spines—2.5–3 mm long on stems, shorter or inconspicuous on branches.
One to three flowers occur in fascicles in the leaf axils; they are unisexual and dioecious, pale green. Pedicels measure 2–6 mm. Male flowers possess six tepals (perianth lobes); stamens are slightly shorter than the tepals; filaments are free (not adnate to the tepals); anthers are ovoid, ~0.7 mm long. Female flowers resemble male flowers in size and possess six staminodes.
Berries are globose, 6–7 mm in diameter, turning red at maturity, each containing a single seed. Flowering occurs from May to July; fruiting occurs in August.
Ecological Environment: The plant grows in damp mountain forests, grasslands, shrublands, along roadsides, hillsides and mountain slopes, valleys, sparse forests, and wastelands—predominantly in mountainous regions below 1,000 m above sea level. It is also cultivated. This species is mainly distributed in China.
Growth Characteristics: The plant prefers a warm, humid climate; it is intolerant of severe cold, drought, and waterlogging. Cultivation requires deep, fertile, humus-rich, well-drained loam or sandy loam soils; heavy clay or infertile, poorly drained soils are unsuitable.
Characteristics of the Herb: The tuberous root is long-fusiform (elongated spindle-shaped) or cylindrical, slightly curved, 4–18 cm long, and 0.5–2 cm in diameter. The surface is yellowish-white or yellowish-brown, translucent, and marked by longitudinal grooves and fine, irregular wrinkles. The texture is firm and tough—or soft and smooth—depending on processing and storage; the fracture surface is yellowish-white, keratoid (horny), slightly sticky (glutinous); the cortex is broad, and the stele is prominent and yellowish-white. The herb has a faint odor and tastes sweet with a slight bitterness.
Pharmacological Actions: (1) In vitro inhibition of leukocyte dehydrogenase activity in patients with acute lymphoblastic leukemia, chronic myelogenous leukemia, and acute monocytic leukemia; (2) Inhibition of leukocyte respiration in patients with acute lymphoblastic leukemia.
Medicinal Efficacy: Nourishes Yin, moistens dryness, clears lung heat, promotes secretion of saliva and body fluids, and reduces fire. It is indicated for pulmonary dryness and dry cough; dry-heat cough; whooping cough with sticky phlegm; soreness and pain in the waist and knees; bone steaming and hectic fever; Yin-deficiency fever; Yin-deficiency–induced cough due to overstrain; internal heat with wasting thirst (consumptive thirst); febrile diseases injuring body fluids; febrile diseases damaging Yin; cough with hematemesis; dry throat and thirst; sore and swollen throat; atrophic lung disease; lung abscess; wasting thirst (consumptive thirst); constipation; intestinal dryness with constipation; etc.
Administration of Radix Asparagi (Tiān Mén Dōnɡ):
Reference:
Administration Guide for Radix Asparagi (Tiān Mén Dōnɡ)
TCM Books:
(1) Internally: 6–12 grams; (2) Internally: water decoction, 2–4 qian (≈6–12 grams); or prepared as an ointment, pill, or powder; (3) Internally: water decoction, 6–15 grams; or prepared as an ointment, pill, or powder. External use: Apply an appropriate amount—either crush fresh herb and apply as a poultice, or extract the juice and smear topically.
Contraindications, Precautions, and Adverse Reactions: Radix Asparagi should not be combined with azurite.
✵This article documents the herb Asparagus Root, including its English name, Latin name, Pinyin name, properties and flavor, botanical source—namely, a single plant species: (1) Asparagus cochinchinensis (Lour.) Merr.—and provides a detailed description of the botanical features, growth characteristics, and ecological environment of this species, as well as the characteristics of the herb, its pharmacological actions, medicinal efficacy, and administration guidelines.
Pinyin Name: Tiān Mén Dōnɡ
Botanical Description: Asparagus cochinchinensis (Lour.) Merr. is a species belonging to the genus Asparagus L. and the family Asparagaceae (formerly placed in Liliaceae). It is also known as Melanthium cochinchinensis Lour., Asparagus lucidus Lindl.(A. lucidus Lindl.), Asparagus gaudichaudianus Kunth. (A. gaudichaudianus Kunth.), Tiān Mén Dōnɡ. It is a perennial, scandent (climbing) herb of the Asparagaceae family. The whole plant is glabrous. Tubers are succulent, clustered, oblong-ovoid or fusiform (spindle-shaped), 4–10 cm long, and yellowish-gray (sallow). Stems are slender, up to 2 m long, with ribs or narrow winged ridges; typically, three phylloclades arise in a fascicle—flat, 1–3 cm long, 1–2 mm wide, with an acute apex.
Leaves are reduced to scale-like structures, acuminate at the apex; the base bears woody, anatropous spines—2.5–3 mm long on stems, shorter or inconspicuous on branches.
Berries are globose, 6–7 mm in diameter, turning red at maturity, each containing a single seed. Flowering occurs from May to July; fruiting occurs in August.
Growth Characteristics: The plant prefers a warm, humid climate; it is intolerant of severe cold, drought, and waterlogging. Cultivation requires deep, fertile, humus-rich, well-drained loam or sandy loam soils; heavy clay or infertile, poorly drained soils are unsuitable.
Characteristics of the Herb: The tuberous root is long-fusiform (elongated spindle-shaped) or cylindrical, slightly curved, 4–18 cm long, and 0.5–2 cm in diameter. The surface is yellowish-white or yellowish-brown, translucent, and marked by longitudinal grooves and fine, irregular wrinkles. The texture is firm and tough—or soft and smooth—depending on processing and storage; the fracture surface is yellowish-white, keratoid (horny), slightly sticky (glutinous); the cortex is broad, and the stele is prominent and yellowish-white. The herb has a faint odor and tastes sweet with a slight bitterness.
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