Chay Root, CHOYA, or SAYAN (Oldenlandia umbellata), a perennial herb of the order Cinchonaceæ, cultivated on the Coromandel coast and in Java for the sake of its long, orange-coloured roots, the bark of which affords a beautiful red dye. It is the Indian madder.
Chay Root
Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 139
Source scan(s): p. 0148