Strobilanthes cusia

Strobilanthes cusia, also known as Assam indigo or Chinese rain bell, is a perennial flowering plant of the family Acanthaceae.^[1] Native to South Asia, China, and Indochina, it was historically cultivated on a large scale in India and China as a source of indigo dye, which is also known as Assam indigo.^[2] In addition to being used for dye, it is also used in the traditional Chinese herbal medicine "Qingdai".^[3] Other names for this dicot include Pink strobilanthes and Strobilanthes flaccidifolius, where flaccidifolius is Latin for "drooping leaves".^[1]

Strobilanthes cusia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Acanthaceae
Genus:	Strobilanthes
Species:	S. cusia
Binomial name
Strobilanthes cusia Nees