Stillingia root, also known as Queen's root, is an herb in the spurge family that is native to the Pacific Islands, Latin America and the southern United States. The herb was known to Native Americans as a restorative herb that was particularly useful to address respiratory dysfunction. It was later adopted by the Eclectic physicians of the early 20th century as an alterative.
The bitter principles of Stillingia root lend a tart, acrid flavor, but also provide astringent properties when applied topically. Infusions and liquid extracts of the root are used to stimulate lymphatic function to help counter various skin conditions, such as acne, eczema and psoriasis.