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The morphological identification, chemical component analysis, and DNA barcode determination were investigated on Genus Mentha (including Mentha haplocalyx Briq., Mentha piperita Linn., Mentha spicata Linn. and Mentha cultivated) in order to reveal the origin of Herba Mentha as a drug, and ensure the accuracy in clinic application. The morphological characters, chemical composition analysis by GC-MS/MS and DNA content measure by polymerase chain reaction (PCR) were reported in this study for inter- or intra- species divergence. Based on the morphology, axillary verticillasters was recognized as the typical character for Mentha haplocalyx Briq. Carvone was used as an index component for chemical composition analysis of Mentha spicata Linn. Gene clustering analysis divided 22 batches of samples into two molecular groups. Mentha haplocalyx Briq. is distinguishably different from Mentha spicata Linn. Mentha piperita Linn. and other cultivated plants were distributed between these two species. The results obtained by morphological identification, chemical composition analysis, and DNA barcode determination show good correlations, but each identification method has its limit. In view of the fact that hybridization of the plants in Genus Mentha is common, identification relying on only one method is not recommended.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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