Chemical constituents of Nelumbinis Plumula Chemical constituents from active fraction in pericarps of Juglans mandshurica Chemical constituents from Rhodiola wallichiana var. cholaensis (I) Allelopathic effect of p-and m-hydroxy phenylacetic acid on soybean (Glycine max L.) germination Chemical constituents from roots of Pedicularis henryi Chemical constituents in Lepidium meyenii cultivated in Jilin