Cassia senna syn. Senna Alexandria Also, Known As: Alexandrian Senna Senna The senna plant is a small shrub belonging to the Caesalpiniaceae family. Incidentally, the senna belongs to two genus of Cassia - C. senna also known as Alexandrina senna, and C. Angustifolia that is also called the Tinnevelly senna. While the first variety of … Continue reading Senna