At the moment, artemisinin is a herbal remedy. It is extracted from Artemisia annua, a type of wormwood, and the best source is in China.

青蒿素为一种草本药物，目前从一种叫做黄花蒿(Artemisia annua)(其最佳产地为中国)的苦艾中萃取而来。

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Several species were used traditionally as medicinal qinghao, but only A. annua eventually proved to contain a sufficient amount of artemisinin.

虽然传统医学把不同品种的蒿都当作药用青蒿，但是后来发现只有a . annua含有足够的青蒿素。

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WHO recommends combinations that contain derivatives of artemisinin — a substance extracted from the plant Artemisia annua — along with another effective antimalarial drug.

世卫组织建议使用含青蒿素副产品和另一种有效抗疟药物的联合化疗。 青蒿素是从青蒿植物中提炼出来的一种物质。

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The practice gives the Bermuda turf a year to recover from its annual battle with the rye, and creates a window for groundskeepers to eradicate the unwanted poa annua grass that threatens to creep onto the greens.

WSJ: Why Brown Is the New Green | Golf Journal by John Paul Newport