鳢肠（学名：Eclipta prostrata）是菊科鳢肠属的植物。分布于田边或路旁、河边以及中国大陆的全国各地等地，生长于海拔0米至1,900米的地区，目前尚未由人工引种栽培。

乌田草、墨旱莲、旱莲草、野向日葵、墨菜、黑墨草、墨汁草、墨水草、乌心草。

Eclipta prostrata commonly known as false daisy, yerba de tago, and bhringraj, is a species of plant in the sunflower family. It is widespread across much of the world.

Other common names include kehraj (কেঁহৰাজ)in Assamese and karisalaankanni (கரிசலாங்கண்ணி) in Tamil and kayyunni (കയ്യുന്നി) in Malayalam and 'माका' in Marathi.In {Kannada} Garugada soppu, keshavardhini, Bhringaraja