...主上焦，舌中主中焦，舌根主下焦。绘图于后。(林佩琴)舌苔如地上初生之草，草必有根，无根者为浮垢，刮之即去。地如秽浊，草必畅茂。邪气入胃，苔必浓腻。故以舌苔验病之虚实寒热，邪之浅深轻重。(《温热经纬》)舌上...