Pinyin: Luomo
Aliases
Yangjiaocai, Popozhenxianbao, Naijiangteng, Yegeshanxiao.
Source
Metaplexis plant from the Apocynaceae familyMetaplexis japonicaDried whole plant or root of (Thunb.) Makino.
Botanical Description
Perennial herbaceous vine, up to 8 m long. The entire plant contains latex; stem woody at the base, more flexible and pliable above, longitudinally striate, densely covered with short pubescence when young, gradually becoming glabrous with age. Leaves opposite, membranous; petiole 3-6 cm long, with clustered glands at the apex; leaf blade ovate-cordate, 5-12 cm long, 4-7 cm wide, apex shortly acuminate, base cordate with rounded auricles 1-2 cm long, upper surface green, lower surface glaucous green, both surfaces glabrous; lateral veins 10-12 pairs, slightly prominent on the lower surface. Inflorescence a racemose cyme, axillary or extra-axillary; peduncle 6-12 cm long, pubescent; pedicel about 8 mm long, pubescent; bracteoles membranous, lanceolate, apex acuminate; calyx lobes lanceolate, sparsely puberulent externally; corolla white with pale purplish-red markings, nearly rotate; corolla lobes spreading, reflexed at apex, overlapping to the left at the base; corona ring-like, attached to the gynostegium, shortly 5-lobed, lobes hooded; stamens united into a cone surrounding the pistil; pollinia pendulous; ovary composed of 2 separate carpels, glabrous, style apex extended into a long beak, 2-cleft at the tip. Follicles divaricate, fusiform, smooth and glabrous, 8-9 cm long, apex acuminate, base swollen. Seeds flat, brown, with a membranous wing, apex with a tuft of white silky hairs. Flowering period July to August, fruiting period September to December.
Habitat and Distribution
Grows in forests, wastelands, riverbanks, and roadside thickets. Distributed in Northeast, North, and East China, as well as Shaanxi, Gansu, Henan, Hubei, Hunan, and Guizhou provinces.
Harvesting and Processing
Harvest the whole plant from July to August, use fresh or sun-dry. Dig up the root tubers in summer and autumn, wash clean, and sun-dry.
Chemical Constituents
This product contains ester-type glycosides, benzoyl gagaminine, cynanchogenin, isogagaminine, sarcostin, gagaminine, dibenzoylgagaimol, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin, deacylcynanchogenin
Properties and Channel Entry
Sweet, pungent, and neutral in nature.
Functions and Indications
Tonifies essence and Qi, promotes lactation, and resolves toxicity
Dosage and Administration
Oral: decoct in water, 15-60 g. External use: apply fresh material in appropriate amount, crush and apply topically.
Prescriptions
1. For impotence: Metaplexis japonica root, Epimedium root, and Curculigo root, 9 g each. Decoct in water for oral administration, 1 dose daily. (Jiangxi Herbal Medicine) 2. For overwork injuries: Metaplexis japonica root, stewed with chicken for oral administration. (Sichuan Chinese Materia Medica, 1960 edition) 3. To promote lactation: Metaplexis japonica 9-15 g, decoct in water for oral administration; or 30-60 g when stewed with meat for oral administration. (Compilation of Commonly Used Folk Herbal Medicines) 4. For scrofula: Metaplexis japonica root 30 g. Decoct in water for oral administration, 1 dose daily. (Jiangxi Herbal Medicine) 5. For verruca vulgaris, thorn warts, and flat warts: Prick the area around the lesion until blood appears. Apply the white juice from the stem of Metaplexis japonica, let it dry naturally, and it will heal after one application. (Jilin Chinese Herbal Medicine)
