油桐花的英文

tung oil tree

Euphorbiaceae

油桐树
tung tree

The oil tung is colored

油桐: 英文名称 Tong-oil Tree
学名:Vernicia fordii，Aleurites fordii
Common Names: tung tree, tung oil tree, China wood oil tree, tung nut tree, aceite chino, Chinawood tree
Family: Euphorbiaceae (spurge Family)

http://www.floridata.com/ref/A/aleu_for.cfm

综此:flowers of Tong-oil Tree 等等
如果更严谨一点，因为它结果实,所以也可以说;blossoms of Tong-oil Treem,blossoms of Chinawood tree等等