泽泻 日本药典中所记载的泽泻是泽泻科植物Alisma orientale Juzepczuk的块茎,通常要去掉外皮。泽泻是生长在东亚沼泽地的一种野生多年生草本植物。中国四川省产的川泽泻和福建省产的建泽泻与日本产泽泻的形状不同,但为同一基原植物。过去日本各地均产泽泻,其中尤以仙台泽泻为上品。现在日本主要在长野县和 Alisma orientalis, which is described in the Japanese Pharmacopoeia, is the tuber of Alisma orientale Juzepczuk, an Alisma orientalis, and usually has its outer skin removed. Alisma is a wild perennial herb growing in the East Asian wetlands. Chuanzai Xie produced in Sichuan Province of China and Jianzheng Xie produced in Fujian Province are different in shape from those produced in Japan, but they are the same base plant. In the past, all over Japan produced Alisma, especially Sendai Alisma for the top grade. Japan is now mainly in Nagano Prefecture