Senna is a flowering bush common in the tropics, with bright yellow flowers. In herbal medicine, Senna has gained some notice as the active ingredient in so-called "dieter's teas," which works mainly as a laxative. While that is a less-than-savory association, Senna has a lovely sound and is a fresh entry in the flourishing botanical names genus.

Senna is a flowering bush common in the tropics, with bright yellow flowers. In herbal medicine, Senna has gained some notice as the active ingredient in so-called "dieter's teas," which works mainly as a laxative. While that is a less-than-savory association, Senna has a pretty sound and is a fresh entry in the flourishing botanical names genus.