黄细心（学名：Boerhavia diffusa）为紫茉莉科黄细心属下的一个种。

Boerhavia diffusa is a species of flowering plant in the four o'clock family which is commonly known as punarnava (meaning that which rejuvenates or renews the body in Ayurveda), red spiderling, spreading hogweed, or tarvine. It is taken in herbal medicine for pain relief and other uses. The leaves of B. diffusa are often used as a green vegetable in many parts of India.