Nubian Senna or Alexandrian Senna or even Khartoum Senna. It grows in parts of Sudan and in some Arabian countries. The best Senna is distinguished by a bright yellowish-green color of the leaves with a faint odor resembling the smell of green tea and a bittersweet taste.
Pantropix genus comprising of 500 species of which 20 are found in native flora of India. It is indigenous to Somalia, southern Arabia, parts of Sindh (Pakistan). In India it is cultivated in Gujrat, Rajasthan and Tamilnadu.
Cassia Angustifolia known as Alexandrian Senna is indigenous to Sudan and Sinai.
Many pharmaceutical and drugs manufacturers are using Senna to produce various types of medicines.
Herbalists use Senna to manufacture Senna.