This member of the Solanaceae family was given this name by Curt Polycarp Joachim Sprengel in 1824. It is found in Bhutan, China, India and Nepal, growing in a rich soil with quite some water and some sun. The swollen root can grow to four centimetres in diameter, the entire plant from 50 to 120centimetres in height. The flowers are pale yellow-green, and can have some brownish-purple markings.
The genera name is a compound of the Greek words ἄνισος;´ ánisos: 'unequal' and ὀδούς odoús, 'tooth', hence signifying 'having teeth of different lengths' – so called from the observation that certain species have calyces featuring lobes or teeth of unequal length. The species' name means 'pale yellow', for the flowers. And a dark one from Spezialplant.nu. And a brownish-purple from Botany.cz.

