Traditional Medicinals Yellow Pau d'Arco Herbal Tea Bags, 32 Ct. Shamans and medicine people of South America have used the inner bark of the flowering pau d?arco tree for generations. Today, herbalists around the world sing its praises. Some of our favorite is sourced with great care from deep in the wild Amazonian rainforest, where it is known locally as tahuari. From field to cup, we make sure our teas deliver the benefits of these amazing plants. To deliver consistently high-quality teas, we source organically farmed or organically wild-collected herbs from ethical trading partnerships, seeking out medicinal-grade plants. Only a small fraction of the world?s herb supply meets our high-quality standards.