             x: @spec.x
             y: @spec.y
             x2: @spec.x
-            y2: @spec.y - 40
+            y2: @spec.y - 60
             color: @spec.stumpColor
+            lineCap: 'square'
             width: @spec.stumpWidth
             speed: @spec.growSpeed
             ease: 'cubic'

            .attr 'x2', branch.x
            .attr 'y2', branch.y
            .attr 'stroke', branch.color
            .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
            lineCap: 'round'
            width: @spec.branchWidth
            speed: @spec.growSpeed
            ease: @spec.ease
