草苁蓉(Boschniakia rossica)俗称不老草。属1年生寄生草本植物,寄生于桦木科赤扬属植物根上,7、8月间采集全草,除去杂质、洗净泥土,鲜用或晒干后备用均可。 Boschniakia rossica is not known as old grass. It is a 1-year-old parasitizing herb that parasitizes the roots of the Betula genus of birch families. It collects whole plants in July and August to remove impurities and wash the soil. It can be used after fresh or dried.