             .attr 'x2', branch.x
             .attr 'y2', branch.y
             .attr 'stroke', branch.color
+            .attr 'stroke-linecap', branch.lineCap
             .attr 'stroke-width', branch.width
             .transition()
             .duration branch.speed

            x2: lastBranch.x2 + (@spec.branchLength * Math.cos(Math.PI * @spec.branchAngle/180)) * direction
            y2: lastBranch.y2 + @spec.branchLength * Math.sin(Math.PI * @spec.branchAngle/180)
            color: @spec.branchColor
            width: @spec.branchWidth
            speed: @spec.growSpeed
            ease: @spec.ease

            x: @spec.x
            y: @spec.y
            x2: @spec.x
            y2: @spec.y - 60
            color: @spec.stumpColor
            lineCap: 'square'
            width: @spec.stumpWidth
            speed: @spec.growSpeed
            ease: 'cubic'
