If Osage: Soak some of the heartwood in some warm/hot water and yellow dye color will bleed out. Tyloses (blocked pores) in earlywood pores, seen on end grain but not well defined. Very heavy wood and hard, 20% denser that mulberry. Leaf is pointed at apex, dark green and shiny, twigs are armed with sharp spines. Mulbery leaves are serrated along the edge and has many forms, from entire to 3 lobed.