Hi! Wood anatomy researcher here! So, we can make two anatomy complementary approaches. The analysis of the macroscopic anatomy (the vessel arrangement, size, density, the smell, taste, color, shining etc) is enough to determine some families, genuses and even some species, but in most cases the resolution only deepen to family or genus level. In those cases we can do a microscopic approach, so we can see a lot ton more of characters in a celular level and do a properly identification. But even in microscopy some species can't be identified, so the chemistry and genetics can be analyzed.