willow saw cut

abnormal arc aspen bedding branch brown bull burst canker caspian check compression core cup cut damage daphne daphnoides deck defects disease diseases displaced doted drift epicormic excentricity flaw forest forestry fungal gall heartwood inbark industry intergrown knot knots log logs lumber mossy pile pitch pith powdered rot rotten salix sapwood saw shake splay stain stem stock sucker tenar timber tree trees trunk violet willow wood woods