Maclura_tinctoria
Maclura tinctoria
Species of tree
Maclura tinctoria, known as old fustic and dyer's mulberry,[3] is a medium to large tree of the Neotropics, from Mexico to Argentina. It produces a yellow dye called fustic primarily known for coloring khaki fabric for U.S. military apparel during World War I.[citation needed] This dye contains the flavonoid morin.[4] It is dioecious, so both male and female plants are needed to set seed.[5]
The leaves can be used to feed silk worms.[6]
Old fustic is not to be confused with young fustic (Rhus cotinus) from southern Europe and Asia, which provides a more fugitive colour.