Wart-removing herb (Aneilema keisak) belongs to Commelinaceae (the Spiderwort family). It is an annual herb that is distributed from Honshu to Shikoku, Kyushu of Japan, the Korean Peninsula and China. This herb grows in rice fields and swamps, and can reach 20-30 cm in height. The stem is creeping and throws out roots at nodes. The pale magenta flowers come in September through November. It is a lowland weed, though used for removing the wart about that long ago.