英文名{{Lang|en|dayflower}}意为「一日花」，意指花开只有一日<ref>{{cite web|title=Asiatic Dayflower Wildflower|url=http://www.wildflowers-guide.com/10-asiatic-dayflower.html|work=Wild Flowers|deadurl=yes|archiveurl=https://web.archive.org/web/20121101063323/http://www.wildflowers-guide.com/10-asiatic-dayflower.html|archivedate=2012-11-01}}</ref>。同样地，[[和名]]「{{Lang|ja|ツユクサ}}」的汉字表记为「{{Lang|ja|露草}}」，意指这种草花开如同朝露般短暂<ref>{{cite web|title=露草（つゆくさ）|url=http://www.hana300.com/tuyuku.html|work=季節の花　３００|deadurl=no|archiveurl=https://web.archive.org/web/20171009194931/http://www.hana300.com/tuyuku.html|archivedate=2017-10-09}}</ref>。

=== 异名 ===