Plant morphology
Spearmint, perennial herb, about 1.3 meters high, with branches. Roots spread, stems square, purple or dark green. Leaves opposite; lanceolate to elliptic-lanceolate, 1–6 cm long, 3–17 mm wide, apex acuminate or cuspidate, base rounded or cuneate, sparsely serrate at edges, glabrous on both surfaces, below There are glandular spots; leaves are sessile. Umbrella inflorescence densely integrated with terminal spikes; sepals linear, marginate hairy; calyx campanulate, externally pubescent, 5-toothed, ciliate; corolla purple or white, inner surface of crown tube glabrous, with 4 Lobes, upper lobes large; stamens 4, projecting beyond crown; styles apically 2-lobed, extending beyond corolla. Nutlets ovate, black, puberulous. Flowering from July to August. Fruit period from August to September.
Small to medium-sized perennial herbs
ã€Growth habits】: Hi, moist and adaptable. Cold-resistant, winter can be exposed in Shanghai, but plant growth after 3 years of continuous planting, cold tolerance is also significantly reduced. Needs plenty of sunlight and is not suitable for cultivation under shading conditions.
[Acquisition]: Harvested from May to August.
[chemical composition]: Contains about 0.6-0.7% of volatile oil, about 60-65% of carshothone in oil, and limonene, phellandrene, etc. Fresh leaves of Indian spearmint contain 0.2-0.25% of volatile oil. The oil contains 55.8% of carotenone, 17.5% of limonene, 6.74% of dihydroarterol, and 11.55% of ester.
[taste]: Xin Gan, warm.
1 "Acid Herbalism": "Spicy and warm."
2Guangzhou Forces Handbook of Common Chinese Herbs: "Gan, tepid."
ã€Function Indications: Shufeng, qi, and pain relief. Treat cold, cough, headache, abdominal pain, dysmenorrhea.
1 "Serious Herbalism": "Treat children with cough."
2 "Lingnan Herbal Medicine Record": "Specializes in dampness and coldness, regulates the menstrual flow. It treats women's abdominal pain during menstruation."
3Guangzhou Army's "common Chinese herbal medicine handbook": "Cold cough, consumptive cough; flatulence."
4Guangzhou Air Force "common Chinese herbal medicine handbook": "stomach cold pain, neurological headache; apply or snoring."
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