Tree Stitch. A stitch used in working small branches, or in representing the roughened bark of trees in Natural Needlework. Bring the needle to the upper surface of the material. Take up as much as desirable on the needle (as for Bullion stitch) ; bring the point of the needle out where the thread is (a). Draw the needle through, and work along the line with a slight stitch as in backward seaming, taking the needle through the material and keeping the thread as uneven as possible to give a roughened appearance (b). Groups of lines worked close together represent bark.