"Hibiscus tea is the infusion made from the calyces (sepals) of the Hibiscus sabdariffa flower, an herbal tea drink consumed both hot and cold by people around the world. It is also referred to as roselle (another common name for the hibiscus flower), flor de Jamaica in Latin America, karkadé in Egypt and Sudan, bissap or wonjo in West Africa, sorrel in Jamaica and Trinidad and Tobago, red sorrel in the wider Caribbean, and other names in other regions." [per Wikipedia]
Outside of green, black, hibiscus, and chamomile teas, there are other healthy herbal teas out there on the market. The brand "Celestial Seasonings" has a wide variety of such things. For example, their herbal "Tension Tamer" tea contains a big variety: Eleuthero, Peppermint, Cinnamon, Ginger, Chamomile, West Indian Lemongrass, Licorice, Catnip, and Tilia Flowers.