PhytolithsThe two most common broad categories of phytoliths are calcium oxalate and silica phytoliths. ![]() ![]() ![]() ![]() ![]() ![]() (Click here for calcium oxalate phytoliths from many more species.) Calcium oxalate phytoliths are altered by fire and become a good tracer for wildfire smoke exposure. ![]() ![]() ![]() ![]() (Click here for more images in this category.) ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |