Caoyebuangqi;Astragali Scaberrimi Radix Sources:The drug is the root of Astragalus scaberrimus Bunge(family Leguminosae),growing in mountainous gravel grassland,sandy dune and sandy land in river bank,distributed in the northeast,the north and the northwest of China. Actions and Indications:It is used to strengthen the spleen and induce diuresis,for the treatment of edema and distention.