The sapwood of the Western Red Cedar (Thuja plicata) is thin with a light yellow tinge.

西部红杉(侧柏木)是较薄，有浅。

Radix Rehmanniae, Cacumen Platycladi, Folium Artemisiae Argyi, Folium Nelumbinis were identified by TLC, and the content of quercitrin was determined by HPLC.

用薄层谱法鉴、侧柏叶、艾叶、荷叶,高效液相谱法测定槲皮苷的含量。