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Solanum torvum Swartz
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English Name |
Tetrongan, |
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Latin name |
Solanum torvum Swartz |
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Family & Genus |
Solanaceae, Solanum |
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Description |
Shrub, 1-3m high. No dust-coloured, stellate pilose on branchlets, inferior surface of leaf, petiole and pedicel. Stems erect, branched, stout, short spines dispersedly grown on branches and petioles. Leaf solitary or twin; petiole length 2-4cm; leaf blade ovate to elliptic, long 6-12cm, 4-9cm wide, apex pointed, base cordate or cuneate, both sides unequal, entire or lobed. Corymb extra-axillary, inflorescences ca. 4cm long; peduncles 1-1.5cm long, with 1 thin straight spine or absent; calyx cupular, outside stellate hairy and glandular hair, apex 5 lobed, lobes ovate-oblong; corolla radialis-shaped, color insufficient, 5 lobed, lobes ovate-lanceolate; stamens 5, inserted at corolla throat, anthers ca. 7mm long; ovary 2 chambers, stigma truncate. Berry spheroid, yellow, glabrous, diameter 1-1.5cm; seed disk, diameter 1.5-2mm. Flowering and fruiting: throughout the year. |
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Distribution |
Growing in humid places of tropical regions such as roadsides, wastelands, ravine and near villages. Originating in Caribbean Area of Americas. Now distributed in Taiwan, Guangdong, Guangxi and Yunnan. |
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Part Used |
Medical part: roots and old stem. Chinese name: Shuiqie. |
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Harvest & Processing |
Collected throughout the year, well washed, sliced, used fresh or sundried. |
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Chemistry |
Root contains neolchlorogenin and jurubine. Stem contains solasodine. Fruit contains torvogenin, chloro-genin [1] and sisalagenone. Leaf contains 2, 3,4-trimethyltria-contane. |
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Properties & Actions |
Taste pungent, neutral in nature ; mild-toxic.Activating blood, dispersing swelling and relieving pain. |
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Indications & Usage |
Gastralgia, cholera, menostasia, stasis and swelling pain from falls, psoatic strain, anthracia, furunculosis.Oral administration: decocting, 9-15g. External application: appropriate amount, triturated for application. |
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Examples |
Gastric lavage, purgation: or use green bean coat, weeping forsythia, ural licorice, decoct in water and swallow; or take fresh asiatic pennywort 0.5 jin, pestle to collect juice, and swallow. |
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Permanent URL：https://sys01.lib.hkbu.edu.hk/cmed/mpid/detail.php?herb_id=D01109 |
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