Cinnamomum cassia United Kingdom, and India is Chinese cinnamon. "Indonesian cinnamon" ("C. burmannii") is sold in much smaller amounts. Chinese cassia is produced in both China and Vietnam. Until the 1960s, Vietnam was the world's most important producer of Saigon cinnamon, which has a higher oil content , and consequently has a stronger flavor. Because of the disruption caused by the Vietnam War, however, production of Indonesian cassia in the highlands of the Indonesia island of Sumatra was increased to meet demand. Indonesian cassia has the lowest oil content of the three types of cassia, so commands the lowest price. Chinese cassia
Cassia fistula and the tree was depicted on a 20-rupee stamp. The golden rain tree is the national flower of Thailand; its yellow flowers symbolize Thai royalty. A 2006–2007 flower festival, the Royal Flora Ratchaphruek, was named after the tree, which is known in Thai as" ratchaphruek" (Thai: ราชพฤกษ์) and the blossoms commonly referred to as "dok koon" (Thai: ดอกคูน). "C. fistula" is also featured on a 2003 joint Canadian-Thai design for a 48-cent stamp, part of a series featuring national emblems. "Cassia acutifolia", the pudding-pipe tree, furnishes the cassia pods of commerce. In Laos, its blooming flowers known locally as "dok