The bark exudes a kino (astringent tannin ).
This resinous exudation (Kino) somewhat resembles gum, hence the name " gum " tree.
Catechu-tannin occurs in the extract of Mimosa catechu; and kino-tannin is the chief ingredient of kino (q.v.).
It was already a ruin when discovered in 1694 by the Jesuit father Kino.