Bel chhal / Bael Bark is pale brown or grayish, smooth or finely fissured and flaking, armed with long straight spines, 1.22.5 cm singly or in pairs, often with slimy sap oozing out from cut parts. The gum is also described as a clear, gummy sap, resembling gum arabic, which exudes from wounded branches and hangs down in long strands, becoming gradually solid.